Re: [neonixie-l] A very rare Chinese Nixie tube '电工牌' SZ-2

[Dekatron42]

I don't think it has any Hg in the gas, it looks very much like only Neon.

The welded wires are poorly welded and come loose easily, just like number 
3 not working on the one sold on eBay now, I have a few failed SZ-2 with 
the same problem.

/Martin

On Monday 1 April 2024 at 19:39:13 UTC+2 Nicholas Stock wrote:

> Hg doped?
>
> Nick
>
> Sent from my iPhone
>
> On Apr 1, 2024, at 10:31, Peter Hall  wrote:
>
> 
>
> Yes-there lovely,7please,lol.
>
> FromPeter Hall insidiousnixies輦Utube 
>
> On 1 Apr 2024 11:49 pm, liam bartosiewicz  wrote:
>
> One of these was sold the other day on eBay for a bit over $100, someone 
> got a pretty good deal if you ask me.
>
> On Apr 1, 2024, at 12:31 AM, xuhui zeng  wrote:
>
> 
> This SZ-2 is a top-view display nixie tube produced by the East China 
> Electron Tube Factory in China, with a diameter of 50mm+ and very large 
> characters.
> <4061711956036_.pic.jpg>
> <4041711956035_.pic.jpg>
> <4051711956036_.pic.jpg>
> <4001711956033_.pic.jpg>
>
> -- 
> You received this message because you are subscribed to the Google Groups 
> "neonixie-l" group.
> To unsubscribe from this group and stop receiving emails from it, send an 
> email to neonixie-l+...@googlegroups.com.
> To view this discussion on the web, visit 
> https://groups.google.com/d/msgid/neonixie-l/4abc2952-228b-4194-a76e-d65ab1919753n%40googlegroups.com
>  
> 
> .
> <4051711956036_.pic.jpg>
> <4061711956036_.pic.jpg>
> <4001711956033_.pic.jpg>
> <4041711956035_.pic.jpg>
>
> -- 
> You received this message because you are subscribed to the Google Groups 
> "neonixie-l" group.
> To unsubscribe from this group and stop receiving emails from it, send an 
> email to neonixie-l+...@googlegroups.com.
> To view this discussion on the web, visit 
> https://groups.google.com/d/msgid/neonixie-l/7FEE6BB4-CF55-43D8-96B9-F73D9F17D546%40gmail.com
>  
> 
> .
>
>
> -- 
> You received this message because you are subscribed to the Google Groups 
> "neonixie-l" group.
> To unsubscribe from this group and stop receiving emails from it, send an 
> email to neonixie-l+...@googlegroups.com.
>
> To view this discussion on the web, visit 
> https://groups.google.com/d/msgid/neonixie-l/MEYP282MB42404ED760347B3B761F8412A63F2%40MEYP282MB4240.AUSP282.PROD.OUTLOOK.COM
>  
> 
> .
>
>

-- 
You received this message because you are subscribed to the Google Groups 
"neonixie-l" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to neonixie-l+unsubscr...@googlegroups.com.
To view this discussion on the web, visit 
https://groups.google.com/d/msgid/neonixie-l/8f89b584-8b19-446b-b047-794ce59069ccn%40googlegroups.com.

Re: [neonixie-l] A very rare Chinese Nixie tube '电工牌' SZ-2

[Dekatron42]

Some six years ago I bought a bunch for USD$4 when they were sold in China, 
a Chinese seller offered them in boxes of 25 per box then so they weren’t 
that rare, then another eBay seller offered them for USD $49 for six 
pieces, oerhaps the same seller who sold then ti me.

Sesrch the forum and you’ll find some more information.

/Martin

On Monday 1 April 2024 at 17:49:28 UTC+2 liam bartosiewicz wrote:

> One of these was sold the other day on eBay for a bit over $100, someone 
> got a pretty good deal if you ask me.
>
> On Apr 1, 2024, at 12:31 AM, xuhui zeng  wrote:
>
> 
>
>
> This SZ-2 is a top-view display nixie tube produced by the East China 
> Electron Tube Factory in China, with a diameter of 50mm+ and very large 
> characters.
>
> <4061711956036_.pic.jpg>
> <4041711956035_.pic.jpg>
> <4051711956036_.pic.jpg>
> <4001711956033_.pic.jpg>
>
> -- 
> You received this message because you are subscribed to the Google Groups 
> "neonixie-l" group.
> To unsubscribe from this group and stop receiving emails from it, send an 
> email to neonixie-l+...@googlegroups.com.
> To view this discussion on the web, visit 
> https://groups.google.com/d/msgid/neonixie-l/4abc2952-228b-4194-a76e-d65ab1919753n%40googlegroups.com
>  
> 
> .
> <4051711956036_.pic.jpg>
> <4061711956036_.pic.jpg>
> <4001711956033_.pic.jpg>
> <4041711956035_.pic.jpg>
>
>

-- 
You received this message because you are subscribed to the Google Groups 
"neonixie-l" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to neonixie-l+unsubscr...@googlegroups.com.
To view this discussion on the web, visit 
https://groups.google.com/d/msgid/neonixie-l/7c4606f0-e4d9-44ec-b0bb-2d53e64cebc4n%40googlegroups.com.

Re: [neonixie-l] Who simulates or protoypes their designs before doing a PCB ?

[Dekatron42]

I sometimes use LTSpuce for analogie simulations where many different 
positive and negative voltages are present as my skills ate inferior when 
it comes to electronics, I especially did this when figuring out how to 
design coupling stages and driving stages for the A-201 Polyatron some 
years back.

/Martin

On Tuesday 26 March 2024 at 21:20:07 UTC+1 gregebert wrote:

> I've heard of Proteus and Falstad, but never looked into them because I'm 
> entrenched in my current suite of free CAD tools and so far I havn't seen 
> anything that will nudge me out. The biggest fear I have is that a tool 
> will get abandoned, so having them installed on my local system is a must. 
> So far, the gEDA tools haven't been abandoned yet, but it's been a few 
> months since the latest update. 
>
> On Tuesday, March 26, 2024 at 12:45:02 AM UTC-7 Tom Nolan wrote:
>
>> I've been using Proteus for many years.  I'm sure I've saved lots of 
>> money on wasted boards.  Also often see better ways of doing things while 
>> simulating.
>>
>> Tom
>>
>> On Sat, Mar 23, 2024 at 11:41 AM gregebert  wrote:
>>
>>> Just curious to know how many of you run logic and/or analog simulations 
>>> on your designs before doing a PCB, or if you do any prototyping.
>>>
>>> Since I'm a longtime designer of IC's, I rely heavily on simulations: 
>>> ngspice for the analog sections, verilog for the entire PCB (logic, FPGA if 
>>> any, and analog). Once that is done, I go straight to PCBs with no 
>>> prototyping. So far, I've only had 1 project that required any 'blue wires' 
>>> to fix a design error.
>>>
>>> -- 
>>>
>> You received this message because you are subscribed to the Google Groups 
>>> "neonixie-l" group.
>>> To unsubscribe from this group and stop receiving emails from it, send 
>>> an email to neonixie-l+...@googlegroups.com.
>>> To view this discussion on the web, visit 
>>> https://groups.google.com/d/msgid/neonixie-l/acf7f9a1-2cf2-4997-9f21-9ae30c929960n%40googlegroups.com
>>>  
>>> 
>>> .
>>>
>>

-- 
You received this message because you are subscribed to the Google Groups 
"neonixie-l" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to neonixie-l+unsubscr...@googlegroups.com.
To view this discussion on the web, visit 
https://groups.google.com/d/msgid/neonixie-l/0edc537b-5dc4-4fd0-be01-c682943e52d0n%40googlegroups.com.

[neonixie-l] Re: Improper Storage

[Dekatron42]

They sometimes came like that when sold years ago here where I live as they 
were just delivered in sealed plastic bags with no extra protection on the 
pins and no box. Other manufacturers just stuck a piece of styrofoam on the 
pins which fell off during shipping as they weren’t secured properly.

At least the pins looks free from rust.

/Martin
On Friday 29 March 2024 at 17:57:43 UTC+1 Mac Doktor wrote:

> Check out the bent pins:
>
> https://www.ebay.com/itm/156143847734
>
>
> I need to get some boxes for the loose stuff myself. Any suggestions?
>
> I do have the requisite label printer...
>
>
> Terry Bowman, KA4HJH
> "The Mac Doctor"
>
> https://www.astarcloseup.com
>
> “Reality is that which, when you stop believing in it, doesn't 
> go away.”–Philip K. Dick, "I Hope I Shall Arrive Soon"
>
>

-- 
You received this message because you are subscribed to the Google Groups 
"neonixie-l" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to neonixie-l+unsubscr...@googlegroups.com.
To view this discussion on the web, visit 
https://groups.google.com/d/msgid/neonixie-l/34a66a5b-1917-4458-8d16-91e2258e7100n%40googlegroups.com.

Re: [neonixie-l] Anyone want to collaborate on electroluminescent display projects ?

[Dekatron42]

You might remember this thread from 
2018: https://groups.google.com/g/neonixie-l/c/UJczdz85J8o where I included 
a Russian book on these displays and also pointed out a Russian website 
plus Mark Moulding wrote about his experiences.

/Martin

On Thursday 14 March 2024 at 22:22:37 UTC+1 Michail Wilson wrote:

> I also have those and several other displays.
>
> I have also done research on different power supplies.
>
> Like you, I am getting the same ‘burn-in’ with my displays.  Also, they 
> are not very bright, but I’m told they were intended (true or not) for use 
> in tanks and submarines, which is why they aren’t brightly lit
>
>  
>
> This is a short test done with a couple of types of displays….
>
> https://www.youtube.com/watch?v=j0fvadiuw-4
>
>  
>
> Michail 
>
>  
>
> *From:* neoni...@googlegroups.com  *On Behalf 
> Of *gregebert
> *Sent:* Thursday, March 14, 2024 6:43 PM
> *To:* neonixie-l 
> *Subject:* [neonixie-l] Anyone want to collaborate on electroluminescent 
> display projects ?
>
>  
>
> I'm finally at the point I have time to work on a design for my Soviet-era 
> electroluminescent displays. I have 2 types, the smaller IEL-0-IV, and a 
> much larger I-195. Both are the 'alien' style formats, and will make 
> unusual clocks.
>
>  
>
> I have done some very initial testing on the smaller one, and it appears 
> to be burning the phosphor after just a few hours of usage. It's not lit 
> very bright, so I dont know if this is a common burn-in phase, or not. 
> Documentation is pretty limited, and I've been running a 50-page document 
> page-by-page thru google translate; so far nothing has come up regarding 
> burn-in.
>
>  
>
> If anyone out there is working-on IEL's, or planning-to do so, please 
> chime in so we can start a discussion here.
>
>  
>
> -- 
> You received this message because you are subscribed to the Google Groups 
> "neonixie-l" group.
> To unsubscribe from this group and stop receiving emails from it, send an 
> email to neonixie-l+...@googlegroups.com.
> To view this discussion on the web, visit 
> https://groups.google.com/d/msgid/neonixie-l/b54a07f4-5e7a-4500-843e-bca2503df27bn%40googlegroups.com
>  
> 
> .
>

-- 
You received this message because you are subscribed to the Google Groups 
"neonixie-l" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to neonixie-l+unsubscr...@googlegroups.com.
To view this discussion on the web, visit 
https://groups.google.com/d/msgid/neonixie-l/bf80ed8a-d719-475c-b9df-f2ea552413dbn%40googlegroups.com.

[neonixie-l] Re: Databook for Futaba VFD displays?

[Dekatron42]

I contacted Futaba but they told me they didn't have anything that old for 
download.

/Martin

On Monday 5 February 2024 at 13:54:34 UTC+1 Paul Andrews wrote:

> Try emailing the contacts listed at 
> https://www.futaba.co.jp/en/product/vfd. I’ve got results in the past 
> with various companies that still exist. It isn’t unusual for them to keep 
> old libraries of this stuff.
>
> On Saturday, February 3, 2024 at 9:52:36 AM UTC-5 Dekatron42 wrote:
>
>> Thanks, yes I think I will be fine from the information in the diagram 
>> for these VFD's.
>>
>> But a data book would be very welcome especially since I have a bunch of 
>> other VFD arriving, later and hopefully some of them are from Futaba, as I 
>> bought what was left from an old radio/repair shop and I don't know what's 
>> in the box yet.
>>
>> I have been looking some more for a Futaba VFD data book but it seems 
>> impossible to find one anywhere.
>>
>> /Martin
>>
>> On Thursday 1 February 2024 at 09:58:58 UTC+1 andybiker wrote:
>>
>>> Hi Martin,
>>>
>>> This seems to be a bare VFD, the elektor article gives the pinout and a 
>>> fair guess at how to drive the filement.
>>>
>>> I'm not sure you'll find a full datasheet due to the age.
>>>
>>> treat it as any other VFD.
>>>
>>> Cheers,
>>> Andrew
>>>
>>> On Wednesday, January 31, 2024 at 6:58:53 PM UTC Dekatron42 wrote:
>>>
>>>> I've Googled some and haven't been able to find a databook for Futaba 
>>>> VFD displays, does anyone know where I can download a PDF?
>>>>
>>>> I'm right now interested in finding a datasheet for the 10*14 pixels 
>>>> display DM-4Z 2E that is used in the Elektor June 1983 article "Spectrum 
>>>> display".
>>>>
>>>> /Martin
>>>>
>>>

-- 
You received this message because you are subscribed to the Google Groups 
"neonixie-l" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to neonixie-l+unsubscr...@googlegroups.com.
To view this discussion on the web, visit 
https://groups.google.com/d/msgid/neonixie-l/5a8d9c7b-2995-48bb-a763-03d721860149n%40googlegroups.com.

[neonixie-l] Re: Databook for Futaba VFD displays?

[Dekatron42]

Thanks, yes I think I will be fine from the information in the diagram for 
these VFD's.

But a data book would be very welcome especially since I have a bunch of 
other VFD arriving, later and hopefully some of them are from Futaba, as I 
bought what was left from an old radio/repair shop and I don't know what's 
in the box yet.

I have been looking some more for a Futaba VFD data book but it seems 
impossible to find one anywhere.

/Martin

On Thursday 1 February 2024 at 09:58:58 UTC+1 andybiker wrote:

> Hi Martin,
>
> This seems to be a bare VFD, the elektor article gives the pinout and a 
> fair guess at how to drive the filement.
>
> I'm not sure you'll find a full datasheet due to the age.
>
> treat it as any other VFD.
>
> Cheers,
> Andrew
>
> On Wednesday, January 31, 2024 at 6:58:53 PM UTC Dekatron42 wrote:
>
>> I've Googled some and haven't been able to find a databook for Futaba VFD 
>> displays, does anyone know where I can download a PDF?
>>
>> I'm right now interested in finding a datasheet for the 10*14 pixels 
>> display DM-4Z 2E that is used in the Elektor June 1983 article "Spectrum 
>> display".
>>
>> /Martin
>>
>

-- 
You received this message because you are subscribed to the Google Groups 
"neonixie-l" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to neonixie-l+unsubscr...@googlegroups.com.
To view this discussion on the web, visit 
https://groups.google.com/d/msgid/neonixie-l/eb5dfe4d-3b71-44ac-9a41-0d9a4d96b2adn%40googlegroups.com.

[neonixie-l] Databook for Futaba VFD displays?

[Dekatron42]

I've Googled some and haven't been able to find a databook for Futaba VFD 
displays, does anyone know where I can download a PDF?

I'm right now interested in finding a datasheet for the 10*14 pixels 
display DM-4Z 2E that is used in the Elektor June 1983 article "Spectrum 
display".

/Martin

-- 
You received this message because you are subscribed to the Google Groups 
"neonixie-l" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to neonixie-l+unsubscr...@googlegroups.com.
To view this discussion on the web, visit 
https://groups.google.com/d/msgid/neonixie-l/9613e1e8-9894-44c4-aea8-a1053567ca34n%40googlegroups.com.

Re: [neonixie-l] Flip Disc Clock and Controller

[Dekatron42]

Many years ago I got to know a service technician who worked on these 
displays wherever they were used, he told me that apart from making sure 
that all vanes ended up in the same reset position many systems used a 
flowing setting routine that passed from one side to the other not just to 
minimize the electronics used but it also made a "sweeter" noise when all 
vanes rippled like a wave ,rather than being set individually letter by 
letter, which people liked more. This was more common on train/bus stations 
for larger displays but single row displays used it too.

/Martin

On Wednesday 20 December 2023 at 20:15:21 UTC+1 H. Carl Ott wrote:

> Just one observation from when I built a one-off flip clock years ago 
> using some salvaged vane displays.
>   Just be aware of the mechanical noise associated with these things.
>
>The sound from the flips can be pretty mesmerizing (like falling 
> dominoes) and part of their appeal,  unless you are trying to sleep.
>
> Had to add in a timer function to turn itself off during the night. 
>
> carl
> 
> Henry Carl Ott   N2RVQhcar...@gmail.com
>
>
> On Tue, Dec 19, 2023 at 3:51 PM Nicholas Stock  wrote:
>
>> Thanks for that Shaun, Marcin's projects are always fun and interesting.
>>
>> Cheers,
>>
>> Nick
>>
>> On Tue, Dec 19, 2023 at 11:50 AM Shaun Merrigan  
>> wrote:
>>
>>> Folks,
>>>
>>> Just received an email from Marcin Saj about his new project involving 
>>> Flip Disc displays.  He has everything from bare displays to prototyping 
>>> boards to complete clock kits available on Kickstarter:
>>>
>>>
>>> https://www.kickstarter.com/projects/marcinsaj/flip-disc-displays-arduino-based?ref=ksr_email_user_watched_project_launched
>>>
>>> Looks interesting and cool!
>>>
>>> Shaun M.
>>>
>>> -- 
>>> You received this message because you are subscribed to the Google 
>>> Groups "neonixie-l" group.
>>> To unsubscribe from this group and stop receiving emails from it, send 
>>> an email to neonixie-l+...@googlegroups.com.
>>> To view this discussion on the web, visit 
>>> https://groups.google.com/d/msgid/neonixie-l/a01858ec-77e9-4423-8962-eaef6abc33d4n%40googlegroups.com
>>>  
>>> 
>>> .
>>>
>> -- 
>> You received this message because you are subscribed to the Google Groups 
>> "neonixie-l" group.
>> To unsubscribe from this group and stop receiving emails from it, send an 
>> email to neonixie-l+...@googlegroups.com.
>>
> To view this discussion on the web, visit 
>> https://groups.google.com/d/msgid/neonixie-l/CAOX%2BRH%2B9jwZXYUpHDAqp5r-X-zwkJdyFx%2Bs8WMW3R8dLmnLa3Q%40mail.gmail.com
>>  
>> 
>> .
>>
>

-- 
You received this message because you are subscribed to the Google Groups 
"neonixie-l" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to neonixie-l+unsubscr...@googlegroups.com.
To view this discussion on the web, visit 
https://groups.google.com/d/msgid/neonixie-l/edadfebc-5d14-4f11-b7ad-ed89587b8d68n%40googlegroups.com.

Re: [neonixie-l] Re: Slightly OT: Where do I find the black woven tape used in electronics?

[Dekatron42]

Thank you for all suggestions, googling them all showed me photos of other 
tapes which finally led me to what I believe is the tape I am looking for 
and it is called acetate cloth electrical tape. 3M sells a type called "3M 
Acetate cloth electrical tape 11" 
https://www.3m.com/3M/en_US/p/d/b00017295/ which of course is quite 
expensive as it is 3M and I could only find it in stock in 6.3mm width 
(1/4"). However I found some other brands at transformer winding companies 
as it is also used to isolate between winding layers and also on top of the 
final winding layer. Since I won't be using it as an isolating tape I 
ordered a cheaper one from eBay (Chinese manufacturer used at a transformer 
winding company I know - if i just had thought about that first!).

The photo below shows one such tape from Amazon, unfortunately Amazon 
didn't have a single type of acetate tape in stock right now.

[image: 61EC-nUCTSL._SL1500_.jpg]

/Martin

On Friday 15 December 2023 at 13:43:21 UTC+1 padlernped...@gmail.com wrote:

> You might also try searching for “friction tape”. I remember using that 
> back in the days before PVC, and we also used it to wrap the paddle of our 
> hockey sticks for better puck control!
>
> Sent from my iPhone
>
> On Dec 15, 2023, at 3:34 AM, Mark Moulding  wrote:
>
> As Marcin Adamski recommended, I've found Tesa 51608 to work well for 
> wrapping wiring harnesses.  It's available on Amazon 
> <https://www.amazon.com/gp/product/B00XPDVER2/>.
> ~~
> Mark
>
> On Monday, December 11, 2023 at 1:01:26 AM UTC-8 andybiker wrote:
>
>> Search on Amazon for "car wiring tape" or "car harness tape"
>> It's sticky on one side, cloth on the other to stop all those rattles in 
>> cars!
>> good stuff.
>>
>> On Sunday, December 10, 2023 at 3:36:58 PM UTC Ron Walsh wrote:
>>
>>> What you describes sounds a lot like wiring harness tape.  It is 
>>> impregnated with an adhesive, but it is not thick like in the pictures.  I 
>>> used it on the wiring on my ancient MGB.
>>>
>>> ...Semper Fidelis...
>>>
>>>
>>> https://www.amazon.com/Automotive-Harness-Wrapping-Adhesive-Damping/dp/B07Y9VTPTF
>>> On Sunday, December 10, 2023 at 10:22:23 AM EST, Adrian Godwin <
>>> artg...@gmail.com> wrote: 
>>>
>>>
>>> I remember a type of insulating tape from before PVC and more specialist 
>>> tapes became common. 
>>> It was a cloth tape impregnated with a black adhesive somewhat like tar. 
>>> The adhesive went all through though maybe one side was a bit wetter than 
>>> the other. The result when wound tightly was quite water resistant water 
>>> would bead up on it, and there was enough free adhesive that you could 
>>> smear it over and seal the surface completely.
>>> This would have been about 1968 or so. 
>>>
>>> I'm afraid I don't know where to get it but I'd search for cloth tape, 
>>> cloth tar tape maybe.
>>>
>>> On Sun, Dec 10, 2023 at 2:21 PM Dekatron42  wrote:
>>>
>>> Pictures below from a new similar type of tape taken from my computer as 
>>> I didn't have the old equipment available.
>>>
>>> [image: IMG_7699 - kopia.JPG]
>>>
>>> [image: IMG_7700 - kopia.JPG]
>>>
>>> On Sunday 10 December 2023 at 15:02:10 UTC+1 Jeffry Portell wrote:
>>>
>>> Gaffer's tape usually works well.
>>>
>>> On Sun, Dec 10, 2023 at 7:44 AM J Forbes  wrote:
>>>
>>> Pictures of what you are talking about are always helpful. I can't quite 
>>> imagine what it might be.
>>>
>>>
>>>
>>> On Sunday, December 10, 2023 at 6:30:39 AM UTC-7 Dekatron42 wrote:
>>>
>>> I've been trying to find the black woven tape used to tape connectors to 
>>> each other to keep them connected and it is also use to tape cables down to 
>>> the casing.
>>>
>>> I am restoring some old electronics equipment where this tape has been 
>>> used but the glue used on the tape has dried over the years and the tape 
>>> has come loose.
>>>
>>> There are thousands upon thousands of different tapes to be bought at 
>>> places like Digikey and Mouser but I just don't know where to start and I 
>>> hope that someone here can point me in the right direction.
>>>
>>> /Martin
>>>
>>> -- 
>>> You received this message because you are subscribed to the Google 
>>> Groups "neonixie-l" group.
>>> To unsubscribe from this group and stop receiving emails from it, send 
>

[neonixie-l] Slightly OT: Where do I find the black woven tape used in electronics?

[Dekatron42]

I've been trying to find the black woven tape used to tape connectors to 
each other to keep them connected and it is also use to tape cables down to 
the casing.

I am restoring some old electronics equipment where this tape has been used 
but the glue used on the tape has dried over the years and the tape has 
come loose.

There are thousands upon thousands of different tapes to be bought at 
places like Digikey and Mouser but I just don't know where to start and I 
hope that someone here can point me in the right direction.

/Martin

-- 
You received this message because you are subscribed to the Google Groups 
"neonixie-l" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to neonixie-l+unsubscr...@googlegroups.com.
To view this discussion on the web, visit 
https://groups.google.com/d/msgid/neonixie-l/dba538ef-748a-4dbb-8d93-c58df45285a4n%40googlegroups.com.

Re: [neonixie-l] SP-252 Seeking drawings

[Dekatron42]

Have you asked Dieter if he has a better scan that he can share?

/Martin

On Sunday, 5 November 2023 at 05:30:53 UTC+1 Richard Scales wrote:

> Thank you Benoit but I need actual data to make a footprint to use in PCB 
> design application.
>
> I think I'm mostly there but was really seeking a better picture so I can 
> confirm the accuracy of the supplied numbers and to which pins they apply - 
> some of the ones buried in the centre of the display are not so clearly 
> linked to the numbers at the side.
>  - Richard
>
>
> On Saturday, 4 November 2023 at 14:37:27 UTC Benoit Tourret wrote:
>
>> try to find 0.5 mm inner diameter pipe, 10cm long, fit all the pins, pour 
>> some silicone, you should have a good representation of the socket... if 
>> you didn't forgot to add some wax or similar to unmold the silicon.
>> the more parallel your pipes will be, the more accurate your print will 
>> be.
>> for a good print, the end of the pins is not important, the most 
>> important is the place they have at the beginning, the nearest to the 
>> display. without sacrifying a display; I don't see any other way to have a 
>> good measurement.
>>
>> Le samedi 4 novembre 2023 à 10:04:19 UTC+1, Richard Scales a écrit :
>>
>>> Hello, there are indeed a few the line up - it's the ones that don't 
>>> that worry me the most!
>>>  - RIchard
>>>
>>>
>>> On Saturday, 4 November 2023 at 08:54:44 UTC Benoit Tourret wrote:
>>>
 Hello Richard,

 have a look on the SP-351, 

 https://www.tube-tester.com/sites/nixie/data/datasheets/SP-351_SP-352-drawing-01.jpg
 [image: SP-351_SP-352-drawing-01.jpg]
 not the same number of digit, but some of the pins should be 
 identical...
 On my SP-356, there is 0 aligned pins on a diagonal way. only in 
 horizontal.

 Le samedi 4 novembre 2023 à 07:31:29 UTC+1, Richard Scales a écrit :

> I used to so that but it relies on all the pins being straight and for 
> this particular display - there are 30+ pins in a very small space - the 
> more accurate the better - especially when it finally comes to plugging 
> the 
> things in!
> [image: TTPicture.JPG][image: PPpicture.JPG]
>
> Perhaps the differences are so subtle it's not worth worrying about. 
> It's like staring at constellations! This group on the left seems a 
> little 
> out of alignment when compared with the image from Sperry, it's 
> counterpart 
> in the image for the character on the right looks more like my chart - 
> yet 
> - from the data I have logged - the chart shows similar groupings for 
> left 
> and right - is their image wrong ? is their data wrong?
>
> [image: DDpicture.JPG]
>
> When daylight comes I'll get eyes on the physical display though I 
> fear at my age - that may be the least helpful method!
>
> - Richard
>
> On Saturday, 4 November 2023 at 06:09:25 UTC Audrey wrote:
>
>> You could scan the bottom of one using a scanner and convert to 
>> inches/mm using the DPI.
>>
>> On Sat, Nov 4, 2023, 2:04 AM Richard Scales  
>> wrote:
>>
>>> I'm looking for any details of the pinout of the Sperry / Beckman 
>>> SP-252 Multi Segment display which are any better than the one that I 
>>> found 
>>> over at tube-tester.com:
>>> https://tube-tester.com/sites/nixie/data/SP-252/sp-252.htm
>>>
>>> I'm making a footprint and need to get the pin positions as accurate 
>>> as possible. My usual process for this is to copy the pin positions 
>>> into a 
>>> spreadsheet and make a scattergram which should represent the pin 
>>> positions. 
>>>
>>> This allows me to spot any obvious blunders. It's just that the 
>>> image I have is not that clear and there is some information missing 
>>> (IMHO) 
>>> so if anyone can point me to anything better I would be most grateful.
>>>
>>> I could not find it in the Sperry Information Systems catalogue for 
>>> which I already have a PDF.
>>> - Richard
>>>
>>> -- 
>>> You received this message because you are subscribed to the Google 
>>> Groups "neonixie-l" group.
>>> To unsubscribe from this group and stop receiving emails from it, 
>>> send an email to neonixie-l+...@googlegroups.com.
>>> To view this discussion on the web, visit 
>>> https://groups.google.com/d/msgid/neonixie-l/171bf56b-7195-454e-8ebb-2ef9aceb2e78n%40googlegroups.com
>>>  
>>> 
>>> .
>>>
>>

-- 
You received this message because you are subscribed to the Google Groups 
"neonixie-l" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to neonixie-l+unsubscr...@googlegroups.com.
To view this discussion on the web, visit 

[neonixie-l] Re: Dekatron clock,

[Dekatron42]

You can contact the designer of that clock, he answered my questions 
manyvyears ago.

You can also have a look 
here: https://threeneurons.wordpress.com/dekatron-stuff/ for dekatron 
driving and explanationd.

/Martin
On Thursday, 21 September 2023 at 20:18:47 UTC+2 Benoit Tourret wrote:

> Good morning,
> I'm still with my idea of making a dekatron clock.
>
> I found some diagrams at http://959radio.co.uk/dekatron.html
>
> but here is my second question:
> in the diagram http://959radio.co.uk/Sec_Counter.pdf there are two A-101 
> dekatrons to divide the frequency of 1 Hz into seconds.
> each dekatron will pilot its own nixie tube to display the seconds. it's 
> via an MPSA42 transistor. one per used cathode.
> the first decatron will increment the second dekatron each time the 
> cathode "K0" shines, to increment the tens.
>
> here we have a vacuum triode, but I want to replace it with a transistor 
> or perhaps a thyratron; it's a clock, not central heating...
> how would you handle this?
>
> another question, what is x (marked: To other modules)?
>
> and while we're at it, can you just explain to me how the transition from 
> 59 to 00 works, via I think Q11 and Q17. but how? and why is G2@DEK2 
> involved?
> And also if there is (as I think) a small error on the DEK2 Bus, which 
> should be marked 6 and not 10, and the MPSA42 transistors should be 
> numbered from Q12 to Q17.
> the compute module for the seconds and minutes being exactly the same, we 
> will stop there.
>
> P.S. If you think to have a better diagram, don't hesitate.
>
> Regards,
> Benoit.
>

-- 
You received this message because you are subscribed to the Google Groups 
"neonixie-l" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to neonixie-l+unsubscr...@googlegroups.com.
To view this discussion on the web, visit 
https://groups.google.com/d/msgid/neonixie-l/dc31aff6-74dd-4a52-927f-51e0febf9c91n%40googlegroups.com.

Re: [neonixie-l] New nixie tube project lanched on kickstarter

[Dekatron42]

Are the pins compatible with the Hamamatsu E678-14C socket or any other 
15-pin photomultiplier tube?

/Martin

On Thursday, 21 September 2023 at 06:16:31 UTC+2 Jeff Walton wrote:

> No malice intended, the tubes are beautiful!
>
> Just disappointed that all of the existing sockets can't take advantage of 
> these gorgeous tubes.  
>
> Millclock tried the same thing with a proprietary pinout and clock for 
> their ZIN70 and ended up going back and creating a pin compatible version 
> for the 568.
>
> Still, it is so nice to see crafts people create and revive nixie 
> production know-how to keep the nixie tube alive!  The makers have shared 
> wonderful videos of the process and it is amazing how many things need to 
> be just right to create a working tube that can provide long lifetimes. 
>
> I really wanted to order some! 
>
> Jeff 
>
>
>  Original message 
> From: dudu sa  
> Date: 9/20/23 11:03 PM (GMT-06:00) 
> To: neonixie-l  
> Subject: Re: [neonixie-l] New nixie tube project lanched on kickstarter 
>
> [image: 微信截图_20230921120249.png]There's no need for malice. In fact, I 
> left the decimal point on the right. Do you think the decimal point could 
> be added if it were an IN18 pin?
>
> 在2023年9月21日星期四 UTC+8 09:44:43 写道：
>
>> I doubt it's malicious like that, but it is a huge missed opportunity 
>> that these tubes cant take advantage of existing IN-18 clocks/kits, 
>> especially since he said he plans to make tubes with different fonts.
>>
>> On Wed, Sep 20, 2023, 9:37 PM Jeff Walton  wrote:
>>
>>> These tubes look gorgeous and have some good thought behind it.  I love 
>>> that it is a true pinned tube with a round dome.  
>>>
>>> What ruins it for my purpose is that the pinout is proprietary and 
>>> probably done so he can sell expensive clocks.  I have multiple IN-18 based 
>>> clocks that I was going to just drop tubes into to replace the IN-18s to 
>>> see how they looked and held up. 
>>>
>>> For people that want to build more from scratch, it won't be a big 
>>> issue. 
>>>
>>> Jeff 
>>>
>>>
>>>  Original message 
>>> From: John Snow  
>>> Date: 9/20/23 8:30 PM (GMT-06:00) 
>>> To: neonixie-l  
>>> Subject: [neonixie-l] New nixie tube project lanched on kickstarter 
>>>
>>> Hello guys,
>>> There is a new nixie tube "DMG01" and the clock using this tube , 
>>> project lanched on Kickstarter now: （ not my list )
>>>
>>> https://www.kickstarter.com/projects/inixie/glowing-with-nostalgia-the-resurgence-of-nixie-tubes/description
>>>
>>> The tube is similar with IN18 in size but with more beautiful outlook 
>>> and visual effects.
>>>
>>> Its interesting seems they take great effort to achieve this ! 
>>>
>>> -- 
>>> You received this message because you are subscribed to the Google 
>>> Groups "neonixie-l" group.
>>> To unsubscribe from this group and stop receiving emails from it, send 
>>> an email to neonixie-l+...@googlegroups.com.
>>> To view this discussion on the web, visit 
>>> https://groups.google.com/d/msgid/neonixie-l/f72e6ec0-c999-4df0-89ac-f3cebed822e6n%40googlegroups.com
>>>  
>>> 
>>> .
>>>
>>> -- 
>>> You received this message because you are subscribed to the Google 
>>> Groups "neonixie-l" group.
>>> To unsubscribe from this group and stop receiving emails from it, send 
>>> an email to neonixie-l+...@googlegroups.com.
>>>
>> To view this discussion on the web, visit 
>>> https://groups.google.com/d/msgid/neonixie-l/650b9e6a.050a0220.1f2ef.0186%40mx.google.com
>>>  
>>> 
>>> .
>>>
>> -- 
> You received this message because you are subscribed to the Google Groups 
> "neonixie-l" group.
> To unsubscribe from this group and stop receiving emails from it, send an 
> email to neonixie-l+...@googlegroups.com.
> To view this discussion on the web, visit 
> https://groups.google.com/d/msgid/neonixie-l/f339d0df-6c1a-4295-a801-5667fa387db4n%40googlegroups.com
>  
> 
> .
>

-- 
You received this message because you are subscribed to the Google Groups 
"neonixie-l" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to neonixie-l+unsubscr...@googlegroups.com.
To view this discussion on the web, visit 
https://groups.google.com/d/msgid/neonixie-l/08e7ea2e-d574-4d01-ab27-ad1c616fa5bcn%40googlegroups.com.

[neonixie-l] Re: Repair of an original Jeff Thomas NixiSat...

[Dekatron42]

Nice that you got it running and thanks for reminding us all of the 
breakdowns of capacitors, happens to often and a lot of people never 
suspect them.

I nice forum that has helped me to repair stuff on a few occasions is: 
https://www.badcaps.net/forum/, lots of helpful people there and sometimes 
good schematics for the item you are trying to repair.

/Martin

On Thursday, 14 September 2023 at 15:37:36 UTC+2 Nick wrote:

> Just a quick addition - the dead Xicon electrolytic had no visible signs 
> of failure - no bulging or leakage at all. The DMMs, however good they are, 
> were mostly useless in this case as they were simply confused by what was 
> happening - no DMM or analog VM would have helped much - an analog VM would 
> probably have been worse as it may have reacted as a true-RMS meter which 
> would have hidden this issue completely. At least the DMMs went a bit 
> bonkers, which made me think a bit!
>
> The 'scope is what nailed it; the gate on the FET was clear, as was the 
> mad HT output line.
>
> Nick
>
> On Thursday, 14 September 2023 at 14:22:00 UTC+1 Nick wrote:
>
>> So,
>>
>> I have had an original NixiSat from new, so a long time now - I detailed 
>> it's restoration to a more modern time source and working condition in 
>> these two threads:
>>
>> https://groups.google.com/g/neonixie-l/c/vcNOdSB3nYM/m/3AmeUTtCAQAJ
>> ...and...
>> https://groups.google.com/g/neonixie-l/c/evzX0noEGXg/m/JrVaZG3YFogJ
>>
>> However, a couple of days ago it had completely died; the PSU, a 
>> switched-mode 12V 2A wall-wart was fine, but the clock was completely dead.
>>
>> A quick check showed that the tiny 1.5A fuse had blown... and the 
>> IRF740AS FET was TOAST, almost literally. It had got so hot that it had 
>> burnt the PCB, (1cm charred circle) lifted the track and died to the extent 
>> that it no longer identifies as any sort of semiconductor... it's shuffled 
>> of this mortal coil and gone to join the heavenly choir  invisibule...  . 
>> Interesting smell, well known to EEs (no, not pizza, burning FR4).
>>
>> I replaced the fuse, did some clean-up of the crispiest bits, removed the 
>> CPU, dead FET , the tubes (position recorded for each tube as it was 
>> wrapped and stored) and HV drivers and did some voltage checks. The MAX771 
>> was running and the 5V rail was fine... the HV drivers and CPU were looking 
>> good.
>>
>> So I replaced the FET with a more modern FDB14N30 which is also in a 
>> TO-263 (D2PAK) and is just generally a better FET (and I had some) - 
>> specifically lower Qg & RDSon; similar VGS(th). Tracks repaired just for 
>> the FET drain with 28G TCW.
>>
>> Using a good lab PSU (Tektronix PS2521G), 'scope (Tektronix 2465A) and 
>> DMMs (Agilient U1272A & U1253B) plus an Aglilent FLIR,  I started looking 
>> for trouble...  it arrived quickly.
>>
>> With 12V in, the current went right up to 260mA and the FET temperature 
>> started climbing rapidly - at 70C I cut the power. The HT rail was not 
>> easily readable and was the first indicator of what might be happening. The 
>> FET gate was looking fine with variable width pulses at about 45kHz but 
>> much more "mark" than "space" - not what was expected for an unloaded HT 
>> SMPS boost controller - it should have settled really quickly into more 
>> "space" than "mark"...
>>
>> Looking at the HT rail using the 'scope was revealing - it was all over 
>> the shop, from about 120V up to 290V - sharp rise time and then decay until 
>> the next hit from the inductor...
>>
>> Just for sanity, I checked the feedback resistors - 1M5 and 12K7 - they 
>> were fine, but obviously what was happening was that the wild swings were 
>> driving the MAX771 insane, that was keeping the FET mostly on and that in 
>> turn was connecting the FET between 12V and  GND with about 0R25 or series 
>> resistance (the current sense resistors, 0R125 and the inductor 100uH and 
>> 0R11) plus the RDSon of the FET (which is about 0R290). 
>>
>> What on earth would cause this? It's obvious if you think about it :)
>>
>> The boost converter output tank capacitor should be 4u7F @ 400V. I 
>> removed it and checked - it came in at 5p5F ! Another dead component. For 
>> reference, it was an Xicon.
>>
>> Without a tank, the output will do exactly as I observed and the FET will 
>> cook. Lucky that other stuff like the HV drivers and the MAX771 didn't get 
>> damaged too...
>>
>> Replacement cap - I had a nice, good quality Nichcon 10uF @ 300V with the 
>> same pin spacing, so used that.
>>
>> All done. Without the tubes, the NixiSat idles now at about 25mA with the 
>> FET stone cold and the gate staying at 0V as the tank was a nice, steady, 
>> 182V. Replaced each tube in original position. All good.
>>
>> Clock fixed for almost nothing, but an interesting lesson for those who 
>> haven't fiddled with these sorts of supplies...
>>
>> Nick
>
>

-- 
You received this message because you are subscribed to the Google Groups 
"neonixie-l" group.
To unsubscribe 

Re: [neonixie-l] Re: does anyone know anything about the IN-20 bar graph tube thanks

[Dekatron42]

It might not even have been the original seller that had this shop up, the 
one we dealt with earlier, someone might have hijacked his shop or built a 
copy.

Anyway it is a pity, the eBay seller I bought the tube from is also gone 
but since more than a year.

/Martin

On Thursday, 3 August 2023 at 16:40:33 UTC+2 Jasper nagle wrote:

> yes i bought a few tubes from radiotubes before and all went well but he 
> made me a private listing with some tubes i had been wanting and it costed 
> me a few grand and all i received where 4 2-6$ tubes so i sent a message 
> and then he said it was his ware house so i asked if we can work something 
> out he stopped responding then 1 week later he's shop gone and it 
> hasn't come back at least but i brought knowing i could get 100% of my 
> money back but before buying i thought it was 98% a scam but sometimes you 
> just have to take a chance 
>
> On Thu, Aug 3, 2023 at 7:16 PM Dekatron42  wrote:
>
>> Quite a few years ago I was told by both Russian and Ukrainian people 
>> that these tubes were manufactured in Ukraine, however the company Plasma 
>> Labs (www.plasmalabs.com) are nowadays situated in Ryazan in Russia so 
>> to me it is unclear where these were actually designed/invented, perhaps 
>> someone else has more information?
>>
>> The logotype is the same on the A-201 Polyatron and the IN-20 as well as 
>> on the Plasma Labs website.
>>
>> /Martin
>>
>> On Thursday, 3 August 2023 at 01:11:24 UTC+2 liam bartosiewicz wrote:
>>
>>> I wouldn’t be surprised if it was produced in what is now Ukraine, but I 
>>> may be wrong.
>>>
>>> On Aug 2, 2023, at 11:11 AM, Tidak Ada  wrote:
>>>
>>> 
>>>
>>> Is the use of blue and yellow a statement,m in combination with a 
>>> Russian tube?
>>>
>>>  
>>>
>>> [e]
>>>
>>> *Van:* neoni...@googlegroups.com [mailto:neoni...@googlegroups.com] *Namens 
>>> *Dekatron42
>>> *Verzonden:* woensdag 2 augustus 2023 23:00
>>> *Aan:* neonixie-l
>>> *Onderwtatmnt to use*
>>>
>>>  
>>>
>>> Yes, I know a little as I own the IN-20 in the photo and it comes from 
>>> an eBay auction.
>>>
>>>  
>>>
>>> I got curious and haggled with the seller on Etsy who used this photo 
>>> but he shipped some other tubes and now his shop is gone from Etsy!
>>>
>>>  
>>>
>>> If you try to access his shop you get this: 
>>> https://www.etsy.com/se-en/shop/RadiotubesShop?ref=profile_header_query=6i1
>>>  
>>> I' not sure why but Etsy and Paypal told me that they had a lot of 
>>> complaints with Radiotubeshop.
>>>
>>>  
>>>
>>> /Martin
>>>
>>>  
>>>
>>>  
>>>
>>>  
>>>
>>> On Thursday, 22 June 2023 at 16:14:59 UTC+2 Jasper nagle wrote:
>>>
>>> [image: 1pcs in-20 indicator nixie tube / extra rare / soviet / ussr 
>>> image 1][image: 1pcs in-20 indicator nixie tube / extra rare / soviet / 
>>> ussr image 1]
>>>
>>> -- 
>>> You received this message because you are subscribed to the Google 
>>> Groups "neonixie-l" group.
>>> To unsubscribe from this group and stop receiving emails from it, send 
>>> an email to neonixie-l+...@googlegroups.com.
>>> To view this discussion on the web, visit 
>>> https://groups.google.com/d/msgid/neonixie-l/f681703e-8368-43c2-b443-5dc381dd5788n%40googlegroups.com
>>>  
>>> <https://groups.google.com/d/msgid/neonixie-l/f681703e-8368-43c2-b443-5dc381dd5788n%40googlegroups.com?utm_medium=email_source=footer>
>>> .
>>>
>>> -- 
>>> You received this message because you are subscribed to the Google 
>>> Groups "neonixie-l" group.
>>> To unsubscribe from this group and stop receiving emails from it, send 
>>> an email to neonixie-l+...@googlegroups.com.
>>>
>>> To view this discussion on the web, visit 
>>> https://groups.google.com/d/msgid/neonixie-l/!%26!AAAYAPDddShx705MuX20yCpp0vvCgAAAEKykABy3S7dAqiQwcwzLUsgBAA%3D%3D%40zeelandnet.nl
>>>  
>>> <https://groups.google.com/d/msgid/neonixie-l/!%26!AAAYAPDddShx705MuX20yCpp0vvCgAAAEKykABy3S7dAqiQwcwzLUsgBAA%3D%3D%40zeelandnet.nl?utm_medium=email_source=footer>
>>> .
>>>
>>> -- 
>>
> You received this message because you are subscribed to a topic in the 
>> Google Groups "neonixie-l" 

Re: [neonixie-l] Re: does anyone know anything about the IN-20 bar graph tube thanks

[Dekatron42]

Quite a few years ago I was told by both Russian and Ukrainian people that 
these tubes were manufactured in Ukraine, however the company Plasma Labs 
(www.plasmalabs.com) are nowadays situated in Ryazan in Russia so to me it 
is unclear where these were actually designed/invented, perhaps someone 
else has more information?

The logotype is the same on the A-201 Polyatron and the IN-20 as well as on 
the Plasma Labs website.

/Martin

On Thursday, 3 August 2023 at 01:11:24 UTC+2 liam bartosiewicz wrote:

> I wouldn’t be surprised if it was produced in what is now Ukraine, but I 
> may be wrong.
>
> On Aug 2, 2023, at 11:11 AM, Tidak Ada  wrote:
>
> 
>
> Is the use of blue and yellow a statement,m in combination with a Russian 
> tube?
>
>  
>
> [e]
>
> *Van:* neoni...@googlegroups.com [mailto:neoni...@googlegroups.com] *Namens 
> *Dekatron42
> *Verzonden:* woensdag 2 augustus 2023 23:00
> *Aan:* neonixie-l
> *Onderwtatmnt to use*
>
>  
>
> Yes, I know a little as I own the IN-20 in the photo and it comes from an 
> eBay auction.
>
>  
>
> I got curious and haggled with the seller on Etsy who used this photo but 
> he shipped some other tubes and now his shop is gone from Etsy!
>
>  
>
> If you try to access his shop you get this: 
> https://www.etsy.com/se-en/shop/RadiotubesShop?ref=profile_header_query=6i1
>  
> I' not sure why but Etsy and Paypal told me that they had a lot of 
> complaints with Radiotubeshop.
>
>  
>
> /Martin
>
>  
>
>  
>
>  
>
> On Thursday, 22 June 2023 at 16:14:59 UTC+2 Jasper nagle wrote:
>
> [image: 1pcs in-20 indicator nixie tube / extra rare / soviet / ussr image 
> 1][image: 1pcs in-20 indicator nixie tube / extra rare / soviet / ussr 
> image 1]
>
> -- 
> You received this message because you are subscribed to the Google Groups 
> "neonixie-l" group.
> To unsubscribe from this group and stop receiving emails from it, send an 
> email to neonixie-l+...@googlegroups.com.
> To view this discussion on the web, visit 
> https://groups.google.com/d/msgid/neonixie-l/f681703e-8368-43c2-b443-5dc381dd5788n%40googlegroups.com
>  
> <https://groups.google.com/d/msgid/neonixie-l/f681703e-8368-43c2-b443-5dc381dd5788n%40googlegroups.com?utm_medium=email_source=footer>
> .
>
> -- 
> You received this message because you are subscribed to the Google Groups 
> "neonixie-l" group.
> To unsubscribe from this group and stop receiving emails from it, send an 
> email to neonixie-l+...@googlegroups.com.
>
> To view this discussion on the web, visit 
> https://groups.google.com/d/msgid/neonixie-l/!%26!AAAYAPDddShx705MuX20yCpp0vvCgAAAEKykABy3S7dAqiQwcwzLUsgBAA%3D%3D%40zeelandnet.nl
>  
> <https://groups.google.com/d/msgid/neonixie-l/!%26!AAAYAPDddShx705MuX20yCpp0vvCgAAAEKykABy3S7dAqiQwcwzLUsgBAA%3D%3D%40zeelandnet.nl?utm_medium=email_source=footer>
> .
>
>

-- 
You received this message because you are subscribed to the Google Groups 
"neonixie-l" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to neonixie-l+unsubscr...@googlegroups.com.
To view this discussion on the web, visit 
https://groups.google.com/d/msgid/neonixie-l/f677133b-f97a-4a48-896c-b819236f4e58n%40googlegroups.com.

[neonixie-l] Re: does anyone know anything about the IN-20 bar graph tube thanks

[Dekatron42]

Yes, I know a little as I own the IN-20 in the photo and it comes from an 
eBay auction.

I got curious and haggled with the seller on Etsy who used this photo but 
he shipped some other tubes and now his shop is gone from Etsy!

If you try to access his shop you get this: 
https://www.etsy.com/se-en/shop/RadiotubesShop?ref=profile_header_query=6i1
 
I' not sure why but Etsy and Paypal told me that they had a lot of 
complaints with Radiotubeshop.

/Martin



On Thursday, 22 June 2023 at 16:14:59 UTC+2 Jasper nagle wrote:

> [image: 1pcs in-20 indicator nixie tube / extra rare / soviet / ussr image 
> 1][image: 1pcs in-20 indicator nixie tube / extra rare / soviet / ussr 
> image 1]
>

-- 
You received this message because you are subscribed to the Google Groups 
"neonixie-l" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to neonixie-l+unsubscr...@googlegroups.com.
To view this discussion on the web, visit 
https://groups.google.com/d/msgid/neonixie-l/f681703e-8368-43c2-b443-5dc381dd5788n%40googlegroups.com.

Re: [neonixie-l] Date codes on ETL GR10x tubes...

[Dekatron42]

It does look like Paul got his information from 
here: https://www.radiomuseum.org/dsp_hersteller_detail.cfm?company_id=9901

/Martin

On Wednesday, 31 May 2023 at 11:06:10 UTC+2 Jon wrote:

> Paul, would you mind sharing the basis for your comment about the 
> post-1957 Mullard/ETL connection? I've done a lot of work on ETL history 
> (visited what's left of their archives, talked to employees etc) and this 
> is news to me.
>
> Thanks,
>
> Jon.
>
> On Tuesday, May 30, 2023 at 8:21:34 PM UTC+1 Paul Andrews wrote:
>
>> After 1957 ETL was owned by Mullard. The date codes for Mullard (Philips) 
>> tubes are described here . It 
>> looks most likely that the first digit is the year number, the second 
>> letter is the month. The one I have is labelled 0B, which I would read as 
>> February 1960. Its a bit of a mess though.
>>
>> On Tuesday, May 30, 2023 at 1:15:02 PM UTC-4 gregebert wrote:
>>
>>> >  but there is a set of 6 matched GR114/CD47s (will sell only as a set) 
>>> > loads of NIMOs
>>>
>>> Well, that's going to be the auction of the century. 
>>>
>>> On Tuesday, May 30, 2023 at 10:06:59 AM UTC-7 Nick wrote:
>>>
 Thanks for asking, but I really don't know yet. There's a HUGE number 
 of tubes to go through (many 1000s). A few of the exotica have been sold 
 to 
 other collectors, but there is a set of 6 matched GR114/CD47s (will sell 
 only as a set) amongst the stuff in the store, plus many other rare tubes.

 I'll start doing auctions in a few months and will provide early 
 warning here. Some of the stuff is extremely rare, including F9020, 
 NEO-5000M, NEO-8000, loads of NIMOs, Pandicons, Pixies, Panaplex, 
 Alphanumeric tubes etc.

 On Tuesday, 30 May 2023 at 17:55:20 UTC+1 Robert wrote:

> Hi
>
> What would the cost be per tube, used or NIB?
>
> Thanks
> Rob
>
> On 30 May 2023, at 17:40, 'Nick' via neonixie-l <
> neoni...@googlegroups.com> wrote:
>
> So here's the thing: I'm rationalising my rather large nixie 
> collection over the next few months I don't need lots of every nixie.
>
>
> I'm starting with a stash of ETL GR10Gs in varying condition - one has 
> a broken 7 internally, 3 others are "dark" to the point of ... just 
> useable... another 10 are in "used but good to OK condition" and the rest 
> are NIB.
>
> They're a strange, early, tube, needing a Va of 250VDC and an Ra of 
> only 10K for most digits, but 18K2 for the "1" and 14K7 for the "7", i.e. 
> the 1 & 7 also have cathode resistors... They have no Hg doping, so the 
> life of the tube under controlled circumstances is only 5,000 hours... 
> Early stuff.
>
> But they are a BEAUTIFUL tube... I mean, REALLY BEAUTIFUL (IMHO)...
>
> The date codes on them are just two characters, e.g. "OJ" or "RC" etc. 
> Range of ETL logos too...
>
> Anyone have a decode table for these?
>
> Thanks
>
> Nick
>
>
> -- 
> You received this message because you are subscribed to the Google 
> Groups "neonixie-l" group.
> To unsubscribe from this group and stop receiving emails from it, send 
> an email to neonixie-l+...@googlegroups.com.
> To view this discussion on the web, visit 
> https://groups.google.com/d/msgid/neonixie-l/39c22549-5fab-417d-8518-7888e39cb62en%40googlegroups.com
>  
> 
> .
>
>

-- 
You received this message because you are subscribed to the Google Groups 
"neonixie-l" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to neonixie-l+unsubscr...@googlegroups.com.
To view this discussion on the web, visit 
https://groups.google.com/d/msgid/neonixie-l/f18a6eae-3e6c-4605-b5e2-854ddf33b06an%40googlegroups.com.

[neonixie-l] Re: Nixie car gauges

[Dekatron42]

Photos please! I absolutely love the idea!!

I wish I owned a PV544 (or a PV444 with split windows).

/Martin

On Saturday, 13 May 2023 at 19:32:46 UTC+2 David Forbes wrote:

> I built a Nixie tube instrument panel for my Corvair a couple of years 
> ago. It's a big PC board with a couple dozen 4998 and 5870 tubes, with a 
> separate control box. It worked very well (no vibration problems or 
> anything), so I transferred it into my Volvo 544 shortly after I reacquired 
> the car last year. It's working well in there too, but I'd like to 
> rearrange the gauges to fit the car's instrument cluster. 
> To this end, I'm redesigning it to be modular instead of a monolithic 
> board shaped to fit the car. Each gauge is a little PC board with an HV66 
> driver and SPI daisy chain ribbon connectors. 
> The plan is to be able to position the modules in the original cluster 
> housing as best fits the car. The software is going to have a header file 
> that's customized to the car. Trim pots on the box allow in-use calibration 
> of those parameters that need it, such as speedometer and temperature. 
> Do any of you with old cars think you'd be interested in this?
>
>

-- 
You received this message because you are subscribed to the Google Groups 
"neonixie-l" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to neonixie-l+unsubscr...@googlegroups.com.
To view this discussion on the web, visit 
https://groups.google.com/d/msgid/neonixie-l/8d470c71-b7f0-4f61-8366-fabfb27f096dn%40googlegroups.com.

[neonixie-l] Re: Slightly off topic but still a Neon filled tube: Neva Franck-Hertz tube, help to get it running please!

[Dekatron42]

Sorry for not writing about what I have checked, it was obvious to me.

I have checked the following:

*. There are no shorts between any pins except the heater connection which 
has a low resistance (can't remember right now though what it measured at 
but it consumes the current stated in the datasheet)
*. There is Neon inside the envelope, and from what it looks when tested 
with a Plasma ball there is a lot of neon, like in a well filled Dekatron
*. The heater works and glows
*. The voltages on the control unit looks ok when tested with a Fluke 87V 
DMM and with both an old analogue HP 1740A and with a more modern Lecroy 
WaveAce 2014

/Martin

On Monday, 8 May 2023 at 14:55:49 UTC+2 Yohan Park wrote:

What have you checked to conclude "the tube seems to work just fine"?
Perhaps too obvious but have you checked with a neon tester to see if 
there's still neon inside?

-- 
You received this message because you are subscribed to the Google Groups 
"neonixie-l" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to neonixie-l+unsubscr...@googlegroups.com.
To view this discussion on the web, visit 
https://groups.google.com/d/msgid/neonixie-l/4bdce914-c279-4501-8142-be6b7c52b1e1n%40googlegroups.com.

[neonixie-l] Slightly off topic but still a Neon filled tube: Neva Franck-Hertz tube, help to get it running please!

[Dekatron42]

I've been able to buy a Neon filled Franck-Hertz tube together with its 
control unit. Everything looks fine, the output voltages from the control 
unit are correct and the tube seems to work just fine, however I can't get 
the experiment to work properly.

Is there anyone here on the forum that can help me out?

I have checked all voltages and used this guide: 
http://www.bastgen.de/schule/physik/13/Material/Franck-Hertz-Neon.pdf

The control unit can be seen here: 
https://www.uranmaschine.de/87051.Neva_6751_Franck-Hertz-Roehre_mit_Quecksilber/87051.Neva_6756_Franck-Hertz-Betriebsgeraet_hires.jpg

What I am trying to do is specifically the part where you are supposed to 
get one or more clusters of neon atoms being excited like in this photo: 
https://www.leybold-shop.com/media/phk/images/versuche/P6243_Schirmbild.jpg

[image: 
https://www.leybold-shop.com/media/phk/images/versuche/P6243_Schirmbild.jpg] 

-- 
You received this message because you are subscribed to the Google Groups 
"neonixie-l" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to neonixie-l+unsubscr...@googlegroups.com.
To view this discussion on the web, visit 
https://groups.google.com/d/msgid/neonixie-l/f755e3b7-c62b-4318-92e6-38ae058dd9b1n%40googlegroups.com.

[neonixie-l] Re: This little beauty arrived today!

[Dekatron42]

Are you sure they are US made Dekatrons, I have a few of this model and 
they have all been equipped with Rodan Dekatrons made in Japan.

The most common failure in this counter is the high voltage electrolytics 
being poor, high ESR or dried out.

No manual unfortunately but it is a very simple design.

/Martin

On Thursday, 4 May 2023 at 23:45:37 UTC+2 Nick Andrews wrote:

> https://www.ebay.com/itm/234989555348
>
> I don't have a probe at the office, but the dekatrons come on and spin 
> around.  It's mesmerizing!  They stop when you hit reset, so that's good.  
> Looks like it has a built-in HV supply up to 1200V.  Also has a Jones 2x3 
> connector on back for something or other.  Pretty sweet to get 5 US-made 
> dekatrons that appear to work.
>
> Don't suppose anyone might have a manual for this?
>

-- 
You received this message because you are subscribed to the Google Groups 
"neonixie-l" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to neonixie-l+unsubscr...@googlegroups.com.
To view this discussion on the web, visit 
https://groups.google.com/d/msgid/neonixie-l/a8a08028-eade-4bf6-b441-3e7b07992d9en%40googlegroups.com.

[neonixie-l] Re: NIMO Patents

[Dekatron42]

Here's the NIMO patent: 
https://patents.google.com/patent/US3793551A/en?assignee=ELECTRONIC+ENGINEERS+IND+Inc

/Martin

On Tuesday, 25 April 2023 at 19:48:34 UTC+2 Dekatron42 wrote:

> I should have said that it is not the actual NIMO patent but from 
> Industrial Electronic Engineers, lnc from which you can start your search, 
> sorry for any confusion.
>
> /Martin
>
> On Tuesday, 25 April 2023 at 19:40:13 UTC+2 Dekatron42 wrote:
>
>> Here's one to start you off with: 
>> https://patents.google.com/patent/US3761169A/en?oq=3%2c761%2c169
>>
>> There are a few other interesting patents in the reference section too!
>>
>> /Martin
>>
>> On Tuesday, 25 April 2023 at 18:16:52 UTC+2 Grahame wrote:
>>
>>> Hi 
>>>
>>> Does anyone know any patent numbers for the IEE NIMO tubes please? 
>>>
>>> All I have found so far is Pat Pending. 
>>>
>>> Ta Grahame 
>>>
>>>
>>>

-- 
You received this message because you are subscribed to the Google Groups 
"neonixie-l" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to neonixie-l+unsubscr...@googlegroups.com.
To view this discussion on the web, visit 
https://groups.google.com/d/msgid/neonixie-l/dacc074b-b329-4a2d-b7c3-ef9d9cb594cbn%40googlegroups.com.

[neonixie-l] Re: NIMO Patents

[Dekatron42]

I should have said that it is not the actual NIMO patent but from 
Industrial Electronic Engineers, lnc from which you can start your search, 
sorry for any confusion.

/Martin

On Tuesday, 25 April 2023 at 19:40:13 UTC+2 Dekatron42 wrote:

> Here's one to start you off with: 
> https://patents.google.com/patent/US3761169A/en?oq=3%2c761%2c169
>
> There are a few other interesting patents in the reference section too!
>
> /Martin
>
> On Tuesday, 25 April 2023 at 18:16:52 UTC+2 Grahame wrote:
>
>> Hi
>>
>> Does anyone know any patent numbers for the IEE NIMO tubes please?
>>
>> All I have found so far is Pat Pending.
>>
>> Ta Grahame
>>
>>
>>

-- 
You received this message because you are subscribed to the Google Groups 
"neonixie-l" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to neonixie-l+unsubscr...@googlegroups.com.
To view this discussion on the web, visit 
https://groups.google.com/d/msgid/neonixie-l/8b9b3a34-425c-44c1-8022-09c4f2ef7550n%40googlegroups.com.

[neonixie-l] Re: NIMO Patents

[Dekatron42]

Here's one to start you off with: 
https://patents.google.com/patent/US3761169A/en?oq=3%2c761%2c169

There are a few other interesting patents in the reference section too!

/Martin

On Tuesday, 25 April 2023 at 18:16:52 UTC+2 Grahame wrote:

> Hi
>
> Does anyone know any patent numbers for the IEE NIMO tubes please?
>
> All I have found so far is Pat Pending.
>
> Ta Grahame
>
>
>

-- 
You received this message because you are subscribed to the Google Groups 
"neonixie-l" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to neonixie-l+unsubscr...@googlegroups.com.
To view this discussion on the web, visit 
https://groups.google.com/d/msgid/neonixie-l/1efc41fd-fbda-4a21-9a3e-916ee0dedb1bn%40googlegroups.com.

Re: [neonixie-l] ‘Burn’ marks on rear of B-7971 tubes

[Dekatron42]

The only "burnt out" ones that I've seen was from a few that I bought from 
a German seller on eBay where he had over driven them with too many 
segments lit at the same time so that the thin anode strip from the pin to 
the anode had burned through completely making the tubes utterly unusable. 
I am not sure how you could put that much current through the anode under 
any normal condition but that was what he told me he had done - don't know 
if that was by accident or from poor design.

/Martin

On Tuesday, 25 April 2023 at 01:18:49 UTC+2 Jeff Walton wrote:

> Construction examples:[image: 20150321_015618.jpg][image: 
> 20150321_014911.jpg]
>
> On Monday, April 24, 2023 at 6:13:48 PM UTC-5 Jeff Walton wrote:
>
>> I have a few of the mica-backed variety of 7971 tubes that do not show 
>> burns around the mica by connections.  They don't seem to test any 
>> differently than the tubes that do show the markings.  Most have the burn 
>> marks but none have ever failed in years of use.  The earlier versions with 
>> wire backplates do not have these markings.  They all seem to be super 
>> reliable and can even withstand the hard shock to dislodge the shorted 
>> adjacent corner segments, which sometimes happens in shipping.  I've seen 
>> some cathode poisoning on the underscore carets, but no other issues.  I'm 
>> not sure that the "burn" marks are anything other than a manufacturing 
>> caused discoloration.  The 7971 seems to be super reliable. 
>>
>> On Monday, April 24, 2023 at 5:30:41 PM UTC-5 gregebert wrote:
>>
>>> I've only seen 2 types of functional failures in 7971's
>>>
>>>- One completely-dead segment (A gift to me; that's how I got 
>>>started with 7971's)
>>>- Adjacent segments shorted together (it just happened one-day on my 
>>>8-tube clock w/o warning; very peculiar)
>>>
>>> I have one exhibit-only device with a crack in the base, but that's from 
>>> mishandling. The same tube has two black spots on the mica right next to 
>>> rivets, and I dont know what to conclude from that.
>>>
>>> They are pretty rugged, especially considering their massive size  
>>> /mechanical complexity, and versatile because you can display numerals, 
>>> text, and a few special characters. That said, they are butt-ugly and 
>>> getting expensive.
>>>
>>> With 9 tubes that all work, you're in great shape to build a 6-tube 
>>> clock and have spares.
>>>
>>>
>>>
>>>
>>> On Monday, April 24, 2023 at 2:23:53 PM UTC-7 Nicholas Stock wrote:
>>>
 I have a variety of B7971's with different micas, 'burn' marks, pins in 
 the top of the envelope etc etc. I have yet to have a tube fail on me in 
 day to day use after many years. I don't think it's an indication of any 
 life expectancy for these tubes they appear to be built like tanks.

 Now that I have said that, I await the inundation of messages talking 
 about B7971 failures.. LOL

 Cheers,

 Nick

 On Mon, Apr 24, 2023 at 10:42 AM Robert Norman  
 wrote:

> I have 9 tubes, 5 show no sign of any marks, 2 show marks on a couple 
> of the connections and 2 show more extensive marks, all work perfectly.
>
> Are the ones with marks more likely to have a shorter life?
>
> Rob
>
> -- 
> You received this message because you are subscribed to the Google 
> Groups "neonixie-l" group.
> To unsubscribe from this group and stop receiving emails from it, send 
> an email to neonixie-l+...@googlegroups.com.
> To view this discussion on the web, visit 
> https://groups.google.com/d/msgid/neonixie-l/17DE8F39-16DF-4E6D-8D4D-6D434E8558E3%40gmail.com
> .
>


-- 
You received this message because you are subscribed to the Google Groups 
"neonixie-l" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to neonixie-l+unsubscr...@googlegroups.com.
To view this discussion on the web, visit 
https://groups.google.com/d/msgid/neonixie-l/cef91176-b693-47df-ba71-80c95356c4e4n%40googlegroups.com.

[neonixie-l] Re: hello im wondering i brought a CERBERUS DZ10

[Dekatron42]

I have bought most of mine around 25-50 Euros, the upper range with boxes 
and original packing in good condition, some I've gotten with original 
boxes although the auction didn't say so.

I've seen some go in the 100 Euros range a few years ago. To my knowledge 
there are four colors on the boxes, red, green, yellow and white plus one 
beige type without proper logotype, just printed text, looking more like 
bulk packaging.

How much it is worth is up to the buyer I think, they are quite rare and 
you'll have to hunt for them if you want them.

A yellow box can be seen here: 
http://www.tube-tester.com/sites/nixie/datdekat/DZ10/dz10.htm

/Martin

On Monday, 24 April 2023 at 19:40:35 UTC+2 Jasper nagle wrote:

> im wondering if i paid to much is someone able to let me know what the 
> worth of the tube is but even if i did pay to much i just brought it to add 
> to my collection

-- 
You received this message because you are subscribed to the Google Groups 
"neonixie-l" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to neonixie-l+unsubscr...@googlegroups.com.
To view this discussion on the web, visit 
https://groups.google.com/d/msgid/neonixie-l/6e5326c6-dde5-4561-bfd7-2b19517411ecn%40googlegroups.com.

[neonixie-l] Re: Interesting Dekatron

[Dekatron42]

Yes, recently bought two for 25 Euros each, they came with boxes and were 
fully operational.

/Martin

On Monday, 24 April 2023 at 18:21:13 UTC+2 Nicholas Stock wrote:

>
> https://www.ebay.com/itm/CERBERUS-DZ10-DZ-10-TUBE-ROHRE-VALVE-LAMPE-NIXIE-NOMOTRON-COUNTER-NEON-DEKATRON-/266232916617?&_trksid=p2056016.l4276
>
> Not my listing etc etc.
>
> Price is a bit outrageous though
>

-- 
You received this message because you are subscribed to the Google Groups 
"neonixie-l" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to neonixie-l+unsubscr...@googlegroups.com.
To view this discussion on the web, visit 
https://groups.google.com/d/msgid/neonixie-l/bf3f62bc-3d74-434b-93db-e0f3ff6995ddn%40googlegroups.com.

Re: [neonixie-l] Nixie Tube Modem Test Set

[Dekatron42]

I really do think it is a Burroughs B54-something.

If you take a careful look at the last photo you can see the black socket

[image: B-Socket-SK182.jpg]

And compare it to this photo from Dieters webpage (rotated 180 degrees)

[image: B-Socket-SK182-Dieter.jpg]

so I think it is a Burroughs socket and a Burroughs B54-something Nixie.

Even the top mica sheet is cut the same way as the Burroughs types.

/Martin

On Sunday, 23 April 2023 at 21:38:57 UTC+2 Audrey wrote:

> I think they're zm1000
>
> On Sun, Apr 23, 2023, 1:48 PM Mac Doktor  wrote:
>
>>
>> On Apr 23, 2023, at 1:45 PM, Dekatron42  wrote:
>>
>> To me it looks like there are three B54XX-something Burroughs Nixies from 
>> the looks of the sockets.
>>
>>
>> I looked at the photos and never spotted the tubes! This thing is big on 
>> the inside.
>>
>>
>> Terry Bowman, KA4HJH
>> "The Mac Doctor"
>>
>> https://www.astarcloseup.com
>>
>> "If only you could see what I've seen with your eyes."—Roy Batty, *Blade 
>> Runner*
>>
>> -- 
>> You received this message because you are subscribed to the Google Groups 
>> "neonixie-l" group.
>> To unsubscribe from this group and stop receiving emails from it, send an 
>> email to neonixie-l+...@googlegroups.com.
>> To view this discussion on the web, visit 
>> https://groups.google.com/d/msgid/neonixie-l/3AABE121-1A2D-4F54-9B2F-E8ED0A4F87CE%40gmail.com
>>  
>> <https://groups.google.com/d/msgid/neonixie-l/3AABE121-1A2D-4F54-9B2F-E8ED0A4F87CE%40gmail.com?utm_medium=email_source=footer>
>> .
>>
>

-- 
You received this message because you are subscribed to the Google Groups 
"neonixie-l" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to neonixie-l+unsubscr...@googlegroups.com.
To view this discussion on the web, visit 
https://groups.google.com/d/msgid/neonixie-l/635b7a1d-209c-4151-89bd-9db2fc2706a9n%40googlegroups.com.

[neonixie-l] Re: Nixie Tube Modem Test Set

[Dekatron42]

To me it looks like there are three B54XX-something Burroughs Nixies from 
the looks of the sockets.

/Martin

On Sunday, 23 April 2023 at 18:28:22 UTC+2 Mac Doktor wrote:

> Man, these are some tiny Nixie tubes:
>
> https://www.ebay.com/itm/234984502416
>
>
> How many are in there? It looks like three (with zero being a 
> possibility). The unit is pretty wide and it's hard to picture the scale.
>
>
> Terry Bowman, KA4HJH
> "The Mac Doctor"
>
> https://www.astarcloseup.com
>
> “...the book said something astonishing, a very big thought. The stars, it 
> said, were suns but very far away. The Sun was a star but close up.”—Carl 
> Sagan, "The Backbone Of Night", *Cosmos*, 1980
>
>
>

-- 
You received this message because you are subscribed to the Google Groups 
"neonixie-l" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to neonixie-l+unsubscr...@googlegroups.com.
To view this discussion on the web, visit 
https://groups.google.com/d/msgid/neonixie-l/6ddf1db3-2c64-4581-a2d5-fe9e061b3496n%40googlegroups.com.

[neonixie-l] Re: Scaler with Dekatron Counter

[Dekatron42]

Nice catch!

Did you get any sort of documentation with it?

I have a bunch of those counters but only one amplifier, like the in the 
second auction, and a bunch of different probes plus a bunch of different 
shields/holders for the probe above the sample being tested, made from 
aluminum and lead mostly.

The most common failures have been the 6BG6A tubes being poor after long 
usage and a few transistors that have been blown. The plastic window in 
front of the mechanical counter tends to come loose and drop inside the 
case and that means that dust enters the mechanical counter which makes it 
count poorly. Apart from that all of mine are working flawlessly.

/Martin

On Wednesday, 19 April 2023 at 19:02:04 UTC+2 Mac Doktor wrote:

> I just received this:
>
> https://www.ebay.com/itm/23495610
>
>
> Appears to be working. The HV rotary switch is stuck. Dekatrons light up. 
>
> The seller has another listing which includes a scintillation probe:
>
> https://www.ebay.com/itm/234976322571
>
>
> The scintillation probe is a crapshoot. The crystal may be good, it may be 
> bad. I have one that's working. Need to fix that switch.
>
>
> Terry Bowman, KA4HJH
> "The Mac Doctor"
>
> https://www.astarcloseup.com
>
> “...the book said something astonishing, a very big thought. The stars, it 
> said, were suns but very far away. The Sun was a star but close up.”—Carl 
> Sagan, "The Backbone Of Night", *Cosmos*, 1980
>
>
>

-- 
You received this message because you are subscribed to the Google Groups 
"neonixie-l" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to neonixie-l+unsubscr...@googlegroups.com.
To view this discussion on the web, visit 
https://groups.google.com/d/msgid/neonixie-l/3e8a0578-7b4f-4127-b3a6-249dbe595822n%40googlegroups.com.

Re: [neonixie-l] Are here any good small alarm clocks for use on night table?

[Dekatron42]

Thank you for all comments, had hoped for a few more though.

It seems that most Nixie clocks nowadays are for showing the Nixies 
themselves and not for use as alarm clocks.

The hunt goes on and I might cobble something together myself with the help 
from some kit.

/Martin

On Saturday, 11 February 2023 at 02:01:50 UTC+1 Jeff Walton wrote:

> AM and FM Radio part is not so good...  
>
> Beautiful workmanship and clock.  Bluetooth works nicely. 
>
> Jeff 
>
>  Original message 
> From: Paul Andrews  
> Date: 2/10/23 6:52 PM (GMT-06:00) 
> To: neonixie-l  
> Subject: Re: [neonixie-l] Are here any good small alarm clocks for use on 
> night table? 
>
>
> Another option is the retio at https://retio.co
> On Thursday, February 9, 2023 at 10:25:56 PM UTC-5 Terry S wrote:
>
>> I'd like to know more about it Pete.
>> Terry
>>
>> On Saturday, February 4, 2023 at 10:55:18 PM UTC-6 petehand wrote:
>>
>>> I designed one about ten years ago. I made a few and offered them on 
>>> Ebay, but nobody was interested. The prototype has been waking me reliably 
>>> in the morning for ten years. It has IN17s, 12 or 24 hour mode, two 
>>> completely independent alarms, snooze adjustable 1 to 9 minutes, a tilt 
>>> switch for snooze (reach out blindly and slap it) and a supercap to keep 
>>> time for a nominal 24 hours if it gets unplugged. It uses a 12V wall wart 
>>> for power. I believe I still have one left, tucked in a drawer somewhere, 
>>> and a few partly assembled boards and parts. 
>>>
>>> [image: IN17 alarm front.jpg]
>>>
>>> [image: IN17 alarm open.jpg]
>>>
>>> I'm old and tired now and I'm never going to pick this project up again. 
>>> Does anybody feel like taking it over? It's a shame to let it die.
>>>
>>>
>>>
>>> -- 
> You received this message because you are subscribed to the Google Groups 
> "neonixie-l" group.
> To unsubscribe from this group and stop receiving emails from it, send an 
> email to neonixie-l+...@googlegroups.com.
> To view this discussion on the web, visit 
> https://groups.google.com/d/msgid/neonixie-l/ef7381bb-8cd4-4a9e-9a1e-b653f51109d3n%40googlegroups.com
>  
> 
> .
>

-- 
You received this message because you are subscribed to the Google Groups 
"neonixie-l" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to neonixie-l+unsubscr...@googlegroups.com.
To view this discussion on the web, visit 
https://groups.google.com/d/msgid/neonixie-l/56bc038a-3bc8-4ec1-9394-b588c3efee91n%40googlegroups.com.

[neonixie-l] Re: Identify Part

[Dekatron42]

What board is it soldered to, an overview photo might help a lot.

/Martin

On Friday, 24 March 2023 at 08:00:05 UTC+1 Jeff Walton wrote:

> Can anyone identify this part?  Part of a board that has one input and 8 
> outputs.
>

-- 
You received this message because you are subscribed to the Google Groups 
"neonixie-l" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to neonixie-l+unsubscr...@googlegroups.com.
To view this discussion on the web, visit 
https://groups.google.com/d/msgid/neonixie-l/ce7b557c-4dc4-497c-9553-7a7dc545b197n%40googlegroups.com.

Re: [neonixie-l] Re: IV-9 numitron lifespan

[Dekatron42]

This RCA datasheet shows their simple voltage regulator on page 6 for 
brightness control and it also shows the multiplex design with diodes.

https://www.one-electron.com/Archives/RCA/RCA-AppNotes/RCA%201971%20AN-4277%20Description%20and%20Application%20of%20NUMITRON%20Devices.pdf

/Martin

On Tuesday, 7 March 2023 at 17:18:14 UTC+1 theoldpha...@gmail.com wrote:

> If you send me the schematic (with any modifications you may want) and 
> preferred board size and shape, I can create board files for you.
>
>  
>
> Bill v
>
>  
>
> *From:* neoni...@googlegroups.com  *On Behalf 
> Of *Nicholas Stock
> *Sent:* Tuesday, March 07, 2023 10:57 AM
> *To:* neoni...@googlegroups.com
> *Subject:* Re: [neonixie-l] Re: IV-9 numitron lifespan
>
>  
>
> That's the one. Thanks Martin. I've spoken to Richard about getting more 
> PCBs made (I have some MM5314's that need a good home) but he can't locate 
> the board files. 
>
>  
>
> On Tue, Mar 7, 2023 at 7:54 AM Dekatron42  wrote:
>
> A quick Googling of MM5314N and Numitron finds this webpage: 
> http://www.tuberadios.com/numitron/ with schematic that is said to be 
> compliments of Westdave.
>
>  
>
> /Martin
>
>  
>
> On Tuesday, 7 March 2023 at 16:41:24 UTC+1 Nicholas Stock wrote:
>
> If I'm not mistaken, the clock kit that Martin is referring to is this 
> one..
>
>  
>
> http://rrsignal.com/projects.htm
>
>  
>
> I have the schematic at home somewhere and will dig it out. There is a 
> dimming mod using a transistor/pot that works quite nicely. Mine has been 
> running for about 8 years now with no issues. it uses the MM5314 clock 
> chip, so no software to be seen and is mains referenced, but keeps 
> remarkably good time over long periods (it sits next to a few GPS 
> disciplined clocks).
>
>  
>
> Cheers,
>
>  
>
> Nick
>
>  
>
> On Tue, Mar 7, 2023 at 7:18 AM Batareyka  wrote:
>
> There are two ways to solve this problem.
> 1. Software, but as the author of the topic, there is no software and the 
> possibility of editing it (I
>   I think so), then method number 2 remains.
> 2. The 4511 chip has a wide power supply range from 3-16 volts. Put the 
> power regulator and turn it up to 4 volts, which will change the output 
> power of the lamp filaments accordingly.
> Checked more than once.
>
> вторник, 7 марта 2023 г. в 17:02:08 UTC+2, theold...@gmail.com: 
>
> Martin,
>
>  
>
> How did you do that? (schematic)
>
>  
>
> Problem with a pot (or any resistor) is that you would need one for each 
> element (7 per tube) since you cannot put one in the common line. Each 
> filament draws about 22mA, so depending on the number displayed, the 
> current would be anywhere between 44 and 154 mA. This would result in 
> different voltage drops depending on the number displayed. It would result 
> in uneven light output. Same reason why you could not use a single current 
> regulator pre tube, but one per filament would be needed. A voltage 
> regulator (such as a simple diode) does not have that disadvantage.
>
>  
>
> Bill v
>
>  
>
> *From:* neoni...@googlegroups.com  *On Behalf 
> Of *martin martin
> *Sent:* Tuesday, March 07, 2023 9:09 AM
> *To:* neoni...@googlegroups.com
> *Subject:* Re: [neonixie-l] Re: IV-9 numitron lifespan
>
>  
>
> How about this clock I built in the early 80s? 5314  clock chip.  I used a 
> 1k pot for dimming.  Has been running for  many moons now!
>
>  
>
>  
>
>  
>
>  
>
> ~
>
> *mcve...@gmail.com*
>
>  
>
>  
>
> On Tue, Mar 7, 2023 at 5:55 AM gregebert  wrote:
>
> Under "normal" circumstances, I agree that individual current regulators 
> add a lot of circuitry. The reality is that most tubes are no longer 
> manufactured, so their numbers are dwindling as the price increases, 
> essentially irreplaceable. You wouldn't believe the lengths I went towards 
> protecting NIMO tubes in the clock I'm still working on.
>
>  
>
> I've debated about building a numitron clock, and the route I think I will 
> go with uses LED 'filaments' that are used in retro light bulbs. Filaments 
> scare the heck out of me because they will fail from thermal cycling, but 
> there is no alternative for NIMO and VFD displays.
>
> On Monday, March 6, 2023 at 11:35:22 AM UTC-3 theold...@gmail.com wrote:
>
> Using a current limiter sounds like a LOT of circuitry, 7 times the number 
> of tubes? I simply use a forward biased diode to drop the voltage, about 
> 0.7 for a standard silicon diode, and about 0.3 for a Schottky. That 
> requires only one or perhaps two diodes for the whole set of tubes. Perhaps 
> not as acc

Re: [neonixie-l] Re: IV-9 numitron lifespan

[Dekatron42]

A quick Googling of MM5314N and Numitron finds this webpage: 
http://www.tuberadios.com/numitron/ with schematic that is said to be 
compliments of Westdave.

/Martin

On Tuesday, 7 March 2023 at 16:41:24 UTC+1 Nicholas Stock wrote:

> If I'm not mistaken, the clock kit that Martin is referring to is this 
> one..
>
> http://rrsignal.com/projects.htm
>
> I have the schematic at home somewhere and will dig it out. There is a 
> dimming mod using a transistor/pot that works quite nicely. Mine has been 
> running for about 8 years now with no issues. it uses the MM5314 clock 
> chip, so no software to be seen and is mains referenced, but keeps 
> remarkably good time over long periods (it sits next to a few GPS 
> disciplined clocks).
>
> Cheers,
>
> Nick
>
> On Tue, Mar 7, 2023 at 7:18 AM Batareyka  wrote:
>
>> There are two ways to solve this problem.
>> 1. Software, but as the author of the topic, there is no software and the 
>> possibility of editing it (I
>>   I think so), then method number 2 remains.
>> 2. The 4511 chip has a wide power supply range from 3-16 volts. Put the 
>> power regulator and turn it up to 4 volts, which will change the output 
>> power of the lamp filaments accordingly.
>> Checked more than once.
>>
>> вторник, 7 марта 2023 г. в 17:02:08 UTC+2, theold...@gmail.com: 
>>
> Martin,
>>>
>>>  
>>>
>>> How did you do that? (schematic)
>>>
>>>  
>>>
>>> Problem with a pot (or any resistor) is that you would need one for each 
>>> element (7 per tube) since you cannot put one in the common line. Each 
>>> filament draws about 22mA, so depending on the number displayed, the 
>>> current would be anywhere between 44 and 154 mA. This would result in 
>>> different voltage drops depending on the number displayed. It would result 
>>> in uneven light output. Same reason why you could not use a single current 
>>> regulator pre tube, but one per filament would be needed. A voltage 
>>> regulator (such as a simple diode) does not have that disadvantage.
>>>
>>>  
>>>
>>> Bill v
>>>
>>>  
>>>
>>> *From:* neoni...@googlegroups.com  *On 
>>> Behalf Of *martin martin
>>> *Sent:* Tuesday, March 07, 2023 9:09 AM
>>> *To:* neoni...@googlegroups.com
>>> *Subject:* Re: [neonixie-l] Re: IV-9 numitron lifespan
>>>
>>>  
>>>
>>> How about this clock I built in the early 80s? 5314  clock chip.  I used 
>>> a 1k pot for dimming.  Has been running for  many moons now!
>>>
>>>  
>>>
>>>  
>>>
>>>  
>>>
>>>  
>>>
>>> ~
>>>
>>> *mcve...@gmail.com*
>>>
>>>  
>>>
>>>  
>>>
>>> On Tue, Mar 7, 2023 at 5:55 AM gregebert  wrote:
>>>
>>> Under "normal" circumstances, I agree that individual current regulators 
>>> add a lot of circuitry. The reality is that most tubes are no longer 
>>> manufactured, so their numbers are dwindling as the price increases, 
>>> essentially irreplaceable. You wouldn't believe the lengths I went towards 
>>> protecting NIMO tubes in the clock I'm still working on.
>>>
>>>  
>>>
>>> I've debated about building a numitron clock, and the route I think I 
>>> will go with uses LED 'filaments' that are used in retro light bulbs. 
>>> Filaments scare the heck out of me because they will fail from thermal 
>>> cycling, but there is no alternative for NIMO and VFD displays.
>>>
>>> On Monday, March 6, 2023 at 11:35:22 AM UTC-3 theold...@gmail.com wrote:
>>>
>>> Using a current limiter sounds like a LOT of circuitry, 7 times the 
>>> number of tubes? I simply use a forward biased diode to drop the voltage, 
>>> about 0.7 for a standard silicon diode, and about 0.3 for a Schottky. That 
>>> requires only one or perhaps two diodes for the whole set of tubes. Perhaps 
>>> not as accurate, but definitely a whole lot simpler.
>>>
>>>  
>>>
>>>  
>>>
>>>  
>>>
>>>  
>>>
>>> *From:* neoni...@googlegroups.com  *On 
>>> Behalf Of *gregebert
>>> *Sent:* Monday, March 06, 2023 8:13 AM
>>> *To:* neonixie-l 
>>> *Subject:* Re: [neonixie-l] Re: IV-9 numitron lifespan
>>>
>>>  
>>>
>>> Very good info, Moses.
>>>
>>>  
>>>
>>> From that, I would target the  operating current well-below 20mA to 
>>> prolong the life of the display. You could use an NPN current-limiter 
>>> (driver) driven from 5V TTL logic. Let me know if you need circuit details, 
>>> but it's a very simple design (1 NPN + 1 emitter resistor). As a starting 
>>> point, a 270 ohm emitter resistor will limit current to 16mA.
>>>
>>>  
>>>
>>> Do you hear any noise with your PWM running at 1600Hz ?  If not, I would 
>>> stick with PWM and not use the NPN driver, as it's not necessary. As long 
>>> as the PWM cycle-time is shorter than the thermal time-constant of the 
>>> filament (probably a few milliseconds), you should be fine. I think you can 
>>> measure the thermal time-constant of the filament with a phototransistor 
>>> and a scope. Starting at a low PWM frequency, the phototransistor will show 
>>> fluctuations in the bulb's intensity. As the frequency is increased, you 
>>> should see the amplitude decrease towards zero. I've never 

Re: [neonixie-l] Re: IV-9 numitron lifespan

[Dekatron42]

There are a few different datasheets at the bottom of this page: 
https://danyk.cz/avr_num_en.html and they all seem to mention the filament 
voltage starting at 3.15V - how much would this increase lifespan?

/Martin

On Monday, 6 March 2023 at 17:19:31 UTC+1 Benoit Tourret wrote:

> Thats the case on Mose's clock: one (bypassable) diode driving all the 
> "com" pins
>
> Le lundi 6 mars 2023 à 15:35:22 UTC+1, theold...@gmail.com a écrit :
>
>> Using a current limiter sounds like a LOT of circuitry, 7 times the 
>> number of tubes? I simply use a forward biased diode to drop the voltage, 
>> about 0.7 for a standard silicon diode, and about 0.3 for a Schottky. That 
>> requires only one or perhaps two diodes for the whole set of tubes. Perhaps 
>> not as accurate, but definitely a whole lot simpler.
>>
>>  
>>
>>  
>>
>>  
>>
>>  
>>
>> *From:* neoni...@googlegroups.com  *On Behalf 
>> Of *gregebert
>> *Sent:* Monday, March 06, 2023 8:13 AM
>> *To:* neonixie-l 
>> *Subject:* Re: [neonixie-l] Re: IV-9 numitron lifespan
>>
>>  
>>
>> Very good info, Moses.
>>
>>  
>>
>> From that, I would target the  operating current well-below 20mA to 
>> prolong the life of the display. You could use an NPN current-limiter 
>> (driver) driven from 5V TTL logic. Let me know if you need circuit details, 
>> but it's a very simple design (1 NPN + 1 emitter resistor). As a starting 
>> point, a 270 ohm emitter resistor will limit current to 16mA.
>>
>>  
>>
>> Do you hear any noise with your PWM running at 1600Hz ?  If not, I would 
>> stick with PWM and not use the NPN driver, as it's not necessary. As long 
>> as the PWM cycle-time is shorter than the thermal time-constant of the 
>> filament (probably a few milliseconds), you should be fine. I think you can 
>> measure the thermal time-constant of the filament with a phototransistor 
>> and a scope. Starting at a low PWM frequency, the phototransistor will show 
>> fluctuations in the bulb's intensity. As the frequency is increased, you 
>> should see the amplitude decrease towards zero. I've never actually done 
>> this but I'm pretty sure it will work. You have to use a phototransistor 
>> (or photodiode); a CdS photosensor will have too-slow of a response time.
>>
>> On Monday, March 6, 2023 at 2:37:45 AM UTC-3 Moses wrote:
>>
>> The TI CD4511B datasheet lists the lists the *minimum* high level output 
>> (at 5v VDD) of 4.1v but typical is 4.55v, maybe others are different?
>>
>>  
>>
>> https://www.ti.com/lit/ds/symlink/cd4511b.pdf
>>
>> At 4.55v the segment current on the IV-9 is going to be about 25ma. 
>> Typical IV-9 segment current is about 20ma I believe, so that would be a 
>> 25% overdrive.
>>
>>  
>>
>> I've put up a drive voltage vs segment current table on my site, maybe 
>> it's useful to someone: http://www.neonixie.com/IV-9-6D-RR/#tech
>>
>>  
>>
>> I settled with powering the tubes in my designs in one of two ways.. 5.0v 
>> direct with a recommended PWM of about 65% (the 165 (out of 255) value in 
>> the table) OR 5v through a regular silicon diode, dropping the voltage to 
>> about 4.2v at the tube and PWM that to 76%. Both result in a segment 
>> current of 20ma. Don't know if one or the other is better in regards to 
>> lifetime, I was not able to find any official sources of information. I 
>> experimented with driving them using a 3.3v regulator.. but at that voltage 
>> they were a bit dim.
>>
>>  
>>
>> NOTE: The IV-9 datasheet does mention to avoid running the tubes at a 
>> frequency between 105 and 1000 Hz, presumably to avoid mechanical 
>> resonance. I elected to run them at 1600 Hz.
>>
>>  
>>
>> I looked through some of my testing data.. at a segment current of 3mA 
>> the segments are visible, 2mA they are "barely visible" and at 1mA I noted 
>> them as not visible. Keeping the unlit segments warm with a slight current 
>> seems to make the most sense to me. It's all software on my clock so maybe 
>> an option for the next revision.
>>
>>  
>>
>> That's all I know so far.
>>
>>  
>>
>> Regards,
>>
>> -Moses
>>
>> On Saturday, March 4, 2023 at 5:52:05 AM UTC-8 theold...@gmail.com wrote:
>>
>> Hi Chris,
>>
>>  
>>
>> The numitrons are driven by a 4511 decoder, and according to their data 
>> sheets the max. output at that voltage is 4.1 V, so that is well within 
>> specification for the tube. Yes, I agree, lowering the voltage even further 
>> should increase lifespan.
>>
>>  
>>
>> Bill v
>>
>>  
>>
>> *From:* neoni...@googlegroups.com  *On Behalf 
>> Of *Chris
>> *Sent:* Saturday, March 04, 2023 8:19 AM
>> *To:* neonixie-l 
>> *Subject:* [neonixie-l] Re: IV-9 numitron lifespan
>>
>>  
>>
>> Hi,
>>
>> While i am not sure for the IV9 numitrons have a look at the DA2300 
>> lifetime expectancy,
>>
>>
>>
>> Basically reducing the voltage increases the life expectancy 
>> exponentially. 
>>
>> So i usually run my numitrons at 4.5V or lower and have had no issues so 
>> far.
>>
>> On Friday, March 3, 2023 at 8:05:48 PM UTC+1 

[neonixie-l] Re: Pandicon tube help please

[Dekatron42]

Have you asked the seller for a possible full or partial refund?

There are some special epoxy glues used for vacuum gluing glass which I was 
trying to get hold of a few years but they were very expensive, I think 
this was one of the threads I wound up at: 
https://www.researchgate.net/post/Which_epoxy_or_glue_is_best_for_high_vacuum_and_temperatures_above_80_degrees

Here's a link to Thorlabs: 
https://www.thorlabs.com/newgrouppage9.cfm?objectgroup_id=2519, UHV had 
some good glues too but I ended up with getting hold of a sample from 
Thorlabs.

/Martin

On Tuesday, 28 February 2023 at 15:08:53 UTC+1 Jasper nagle wrote:

> hello i just received my brand new pandicon zm1200 tube and noticed near a 
> pin it has a crack in the class it does seem to work still but has me 
> worried should i put a drop of glue im not sure never had this issue?
>

-- 
You received this message because you are subscribed to the Google Groups 
"neonixie-l" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to neonixie-l+unsubscr...@googlegroups.com.
To view this discussion on the web, visit 
https://groups.google.com/d/msgid/neonixie-l/0a1f0a1b-6d78-4e81-bce2-d0c432953482n%40googlegroups.com.

Re: [neonixie-l] Re: DTF104B Group Buy

[Dekatron42]

So, what number are we at right now?

/Martin

On Monday, 27 February 2023 at 21:23:36 UTC+1 Nicholas Stock wrote:

> Pricing update. If we can get to 500 tubes sold, the price comes down to 
> $22 a tube instead. That's as good as this is going to get at the moment 
> (yes, you read that correctly, 500 tubes).
>
> Cheers,
>
> Nick
>
> On Sun, Feb 26, 2023 at 11:52 AM Dekatron42  wrote:
>
>> I've never seen a datasheet for these either, but at the end of the first 
>> page on several other RCA datasheets they mention that the DTF-designation 
>> is for developmental numbers. The DR2100 series was previously named 
>> DTF122-125 and the DR2200 series was named DTF137-141.
>>
>> So the DTF104B might never have left the developmental stage to get a 
>> proper number.
>>
>> /Martin
>>
>> On Sunday, 26 February 2023 at 20:26:53 UTC+1 Nicholas Stock wrote:
>>
>>> They are nice tubes. The price *may* come down a little depending on 
>>> how much interest there is and the total number of tubes sold, but that is 
>>> out of my control I'm afraid. They don't appear very often on eBay alas. 
>>> I've not seen a data sheet for these anywhere and was under the impression 
>>> they were never actually sold commercially, just engineering samples... is 
>>> that true? Anyone on the list know more about these?
>>>
>>> Cheers,
>>>
>>> Nick
>>>
>>> On Sun, Feb 26, 2023 at 12:06 AM Mark Moulding  wrote:
>>>
>>>> Those are my favorite Numitrons - easy to drive, easy to mount 
>>>> attractively, large format - and pretty rare now.  That price is still a 
>>>> bit steep for a "bulk" purchase; maybe it's about right for a small 
>>>> quantity.  Do you know how many are available?
>>>>
>>>> Also, has anyone ever seen an official RCA data sheet for that tube?  
>>>> Any chance of posting it somewhere?
>>>>
>>>> Here's a clock I made using DTF-104Bs.
>>>> [image: WoodClock_sm.JPG]
>>>> ~~
>>>> Mark Moulding
>>>>
>>>>
>>>> On Saturday, February 25, 2023 at 12:16:42 PM UTC-8 Nicholas Stock 
>>>> wrote:
>>>>
>>>>> Fellow enthusiasts. I have a vendor (someone I have done business with 
>>>>> before) who wants to sell some DTF104B's (NOS) for $25 dollars each. If 
>>>>> you 
>>>>> wish to buy some, then please contact me directly and I can organize.
>>>>>
>>>>> Best,
>>>>>
>>>>> Nick
>>>>>
>>>> -- 
>>>> You received this message because you are subscribed to the Google 
>>>> Groups "neonixie-l" group.
>>>> To unsubscribe from this group and stop receiving emails from it, send 
>>>> an email to neonixie-l+...@googlegroups.com.
>>>> To view this discussion on the web, visit 
>>>> https://groups.google.com/d/msgid/neonixie-l/7d342085-9531-4eba-b368-21e0c5c28112n%40googlegroups.com
>>>>  
>>>> <https://groups.google.com/d/msgid/neonixie-l/7d342085-9531-4eba-b368-21e0c5c28112n%40googlegroups.com?utm_medium=email_source=footer>
>>>> .
>>>>
>>> -- 
>> You received this message because you are subscribed to the Google Groups 
>> "neonixie-l" group.
>> To unsubscribe from this group and stop receiving emails from it, send an 
>> email to neonixie-l+...@googlegroups.com.
>>
> To view this discussion on the web, visit 
>> https://groups.google.com/d/msgid/neonixie-l/8fb73e68-c3f9-4273-81ba-8a6c12e235a0n%40googlegroups.com
>>  
>> <https://groups.google.com/d/msgid/neonixie-l/8fb73e68-c3f9-4273-81ba-8a6c12e235a0n%40googlegroups.com?utm_medium=email_source=footer>
>> .
>>
>

-- 
You received this message because you are subscribed to the Google Groups 
"neonixie-l" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to neonixie-l+unsubscr...@googlegroups.com.
To view this discussion on the web, visit 
https://groups.google.com/d/msgid/neonixie-l/933a05a3-0789-423a-88c4-271d61830714n%40googlegroups.com.

Re: [neonixie-l] Re: DTF104B Group Buy

[Dekatron42]

I've never seen a datasheet for these either, but at the end of the first 
page on several other RCA datasheets they mention that the DTF-designation 
is for developmental numbers. The DR2100 series was previously named 
DTF122-125 and the DR2200 series was named DTF137-141.

So the DTF104B might never have left the developmental stage to get a 
proper number.

/Martin

On Sunday, 26 February 2023 at 20:26:53 UTC+1 Nicholas Stock wrote:

> They are nice tubes. The price *may* come down a little depending on how 
> much interest there is and the total number of tubes sold, but that is out 
> of my control I'm afraid. They don't appear very often on eBay alas. I've 
> not seen a data sheet for these anywhere and was under the impression they 
> were never actually sold commercially, just engineering samples... is that 
> true? Anyone on the list know more about these?
>
> Cheers,
>
> Nick
>
> On Sun, Feb 26, 2023 at 12:06 AM Mark Moulding  wrote:
>
>> Those are my favorite Numitrons - easy to drive, easy to mount 
>> attractively, large format - and pretty rare now.  That price is still a 
>> bit steep for a "bulk" purchase; maybe it's about right for a small 
>> quantity.  Do you know how many are available?
>>
>> Also, has anyone ever seen an official RCA data sheet for that tube?  Any 
>> chance of posting it somewhere?
>>
>> Here's a clock I made using DTF-104Bs.
>> [image: WoodClock_sm.JPG]
>> ~~
>> Mark Moulding
>>
>>
>> On Saturday, February 25, 2023 at 12:16:42 PM UTC-8 Nicholas Stock wrote:
>>
>>> Fellow enthusiasts. I have a vendor (someone I have done business with 
>>> before) who wants to sell some DTF104B's (NOS) for $25 dollars each. If you 
>>> wish to buy some, then please contact me directly and I can organize.
>>>
>>> Best,
>>>
>>> Nick
>>>
>> -- 
>> You received this message because you are subscribed to the Google Groups 
>> "neonixie-l" group.
>> To unsubscribe from this group and stop receiving emails from it, send an 
>> email to neonixie-l+...@googlegroups.com.
>> To view this discussion on the web, visit 
>> https://groups.google.com/d/msgid/neonixie-l/7d342085-9531-4eba-b368-21e0c5c28112n%40googlegroups.com
>>  
>> 
>> .
>>
>

-- 
You received this message because you are subscribed to the Google Groups 
"neonixie-l" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to neonixie-l+unsubscr...@googlegroups.com.
To view this discussion on the web, visit 
https://groups.google.com/d/msgid/neonixie-l/8fb73e68-c3f9-4273-81ba-8a6c12e235a0n%40googlegroups.com.

Re: [neonixie-l] New Nixie Tubes?

[Dekatron42]

Now, there's a proper Nixie tube with a proper socket, I love it!

Now I just hope that they will work just as well as Dalibor's and come with 
an identical, or better, warranty and sold cheap! :)

/Martin

On Saturday, 18 February 2023 at 02:40:39 UTC+1 Mac Doktor wrote:

> On Feb 17, 2023, at 6:15 PM, Audrey  wrote:
>
> https://youtu.be/pv01SKiYJz4
>
> https://twitter.com/LCLR29380401/status/1623875027685834753
>
> https://twitter.com/SaduduH/status/1568858119891197952
>
>
>
> Excellent choice of avatar.
>
>
> Terry Bowman, KA4HJH
> "The Mac Doctor"
>
> https://www.astarcloseup.com
>
> "If only you could see what I've seen with your eyes."—Roy Batty, *Blade 
> Runner*
>
>

-- 
You received this message because you are subscribed to the Google Groups 
"neonixie-l" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to neonixie-l+unsubscr...@googlegroups.com.
To view this discussion on the web, visit 
https://groups.google.com/d/msgid/neonixie-l/ffbfbfab-78b3-4eb7-af6b-fb769ce5d2e1n%40googlegroups.com.

Re: [neonixie-l] Symbols..

[Dekatron42]

These look very much like Chinese types I've seen, I guess the Russians and 
Chinese were working together on these or traded them.

There are also two dots in the sign tube which makes it possible to show 
division too as one dot above and one below the minus sign like: ÷.

Lately I saw a kind of game with the tube where you were supposed to enter 
the right number after game had presented numbers and signs in a row - I 
think it was a Russian game. It worked like the game presenting a few 
numbers with a combination of plus/minus/multiplication/division between 
these numbers and then there was an equal sign and a means for the player 
to enter the answer - 4/2+5*3 = ?? (17).

/Martin

On Thursday, 16 February 2023 at 20:55:33 UTC+1 Audrey wrote:

> Oh no you guys found it haha, I'm really curious what the IN-7 type ones 
> are, one looks like a fine-grid/prototype IN-7, the other one I've not seen 
> before, - + ×
>
> On Thu, Feb 16, 2023, 2:48 PM 'bogdan paduraru' via neonixie-l <
> neoni...@googlegroups.com> wrote:
>
>> very nice ones 
>>
>> On Thursday, February 16, 2023 at 09:17:08 PM GMT+2, Nicholas Stock <
>> nick...@gmail.com> wrote: 
>>
>>
>>
>> https://www.ebay.com/itm/Set-of-unknown-nixie-tubes-with-symbols-rare-collection-NEW-OLD-STOCK-/225424006907
>>
>> Not my listing of course, but interesting looking for the collectors here!
>>
>> Cheers,
>>
>> Nick
>>
>> -- 
>> You received this message because you are subscribed to the Google Groups 
>> "neonixie-l" group.
>> To unsubscribe from this group and stop receiving emails from it, send an 
>> email to neonixie-l+...@googlegroups.com.
>> To view this discussion on the web, visit 
>> https://groups.google.com/d/msgid/neonixie-l/CAOX%2BRHLNsPgNY2Rpvd6uua5dopHBEQBvovjQUPKmr1xUHkHNCQ%40mail.gmail.com
>>  
>> 
>> .
>>
>> -- 
>> You received this message because you are subscribed to the Google Groups 
>> "neonixie-l" group.
>> To unsubscribe from this group and stop receiving emails from it, send an 
>> email to neonixie-l+...@googlegroups.com.
>>
> To view this discussion on the web, visit 
>> https://groups.google.com/d/msgid/neonixie-l/840384201.1525126.1676576919565%40mail.yahoo.com
>>  
>> 
>> .
>>
>

-- 
You received this message because you are subscribed to the Google Groups 
"neonixie-l" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to neonixie-l+unsubscr...@googlegroups.com.
To view this discussion on the web, visit 
https://groups.google.com/d/msgid/neonixie-l/4ab1eb5c-5af0-4335-8e2e-c1bac9be5e2fn%40googlegroups.com.

[neonixie-l] Re: hello im wondering if anyone has some driver circuits for a zm1200 pandicon tube

[Dekatron42]

There is a nice and elegant circuit for the ZM1206 here: 
https://www.radiomuseum.org/tubes/tube_zm1206.html that can be extended 
with more Anode-drivers to drive the ZM1200.

/Martin

On Wednesday, 15 February 2023 at 17:14:22 UTC+1 Jasper nagle wrote:

> i just brought a pandicon zm1200 for 350 usd i hope that is an alright 
> price im also wondering what i should use it for 

-- 
You received this message because you are subscribed to the Google Groups 
"neonixie-l" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to neonixie-l+unsubscr...@googlegroups.com.
To view this discussion on the web, visit 
https://groups.google.com/d/msgid/neonixie-l/dc5300d6-ea32-4ee6-af68-51b0575bfa5en%40googlegroups.com.

Re: [neonixie-l] Re: EEV E727G - what's that?

[Dekatron42]

Any chance you can publish the rest of that data book where that sheet came 
from Dieter?

I've been looking for one for ages!

/Martin

On Tuesday, 7 February 2023 at 17:05:35 UTC+1 Nocrotec wrote:
This series is rare! 
Datasheet snapshot attached. 
Dieter 


-- 
You received this message because you are subscribed to the Google Groups 
"neonixie-l" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to neonixie-l+unsubscr...@googlegroups.com.
To view this discussion on the web, visit 
https://groups.google.com/d/msgid/neonixie-l/453da2c2-13b0-4bf7-b780-a8e7eb4ae25cn%40googlegroups.com.

Re: [neonixie-l] Re: EEV E727G - what's that?

[Dekatron42]

The three barcodes says just what is printed in clear text under/after them:

10ZZ 356346
01
01

I scanned them with a Gryphon GM4100 wireless scanner.

/Martin

On Tuesday, 7 February 2023 at 21:57:57 UTC+1 gregebert wrote:

> I've pondered over it as a 3D-printing project. I have a lot of doubts 
> about it being something durable. Moving mechanical parts are the bane of 
> technology because they wear-out and require maintenance.
>
> Imagine what a binaview clock would sound like at midnite
>
> On Tuesday, February 7, 2023 at 11:58:46 AM UTC-8 Pramanicin wrote:
>
>> The BinaViews were amazingly complicated for what we consider these days 
>> to be such a rudimentary task fascinating to see how they operate. I 
>> wonder if you could recreate that easily
>>
>> On Tue, Feb 7, 2023 at 11:52 AM gregebert  wrote:
>>
>>> The NSN is a clue, and the 1995 date-code suggests this was a spare-part 
>>> that got inventoried around that time. My guess is this was for some sort 
>>> of military equipment that was deployed in the 1970s/1980s, and scrapped 
>>> after the 1990s, which led to this device being sold-off as surplus.
>>>
>>> Given the size and weight, I guess this was for some kind of stationary 
>>> display at a ground installation.
>>> Doomsday clock at a nuke-missile silo ?
>>>
>>> Just when you think you saw every possible display device, something 
>>> even more weird comes along.
>>> I thought NIMO tubes were the most bizarre, then I saw the BinaView on 
>>> Fran Blanche's site.
>>> THIS one takes the prize, for now.
>>>
>>> On Tuesday, February 7, 2023 at 8:05:35 AM UTC-8 Nocrotec wrote:
>>>
>>>> This series is rare! 
>>>> Datasheet snapshot attached. 
>>>> Dieter 
>>>>
>>>> Am 07.02.2023 um 16:49 schrieb Dekatron42: 
>>>> > It says in the auction text that "The picture with power-on display 
>>>> is 
>>>> > from the WEB 'used equipment for a display of the same type'". 
>>>> > 
>>>> > There are some bar-codes as well as other text in the last photo 
>>>> which 
>>>> > might help with finding information. The first portions of the NSN 
>>>> > number 10ZZ356 can be found to be aviation parts, but the only part I 
>>>> > found there was an unnamed item with 10ZZ356111, so the hunt is on. 
>>>> > 
>>>> > /Martin 
>>>> > 
>>>> > Picture 10 of 10 
>>>> > 
>>>> > On Tuesday, 7 February 2023 at 16:27:18 UTC+1 lest...@gmail.com 
>>>> wrote: 
>>>> > 
>>>> > I found this old page <https://riffuchs.livejournal.com/153725.html> 
>>>> > It shows the same pictures as the ad! Strange. 
>>>> > 
>>>> > Olivier 
>>>> > 
>>>> > On Tuesday, 7 February 2023 at 6:36:26 pm UTC+8 marcin wrote: 
>>>> > 
>>>> > Hi Guys, 
>>>> > 
>>>> > have you seen this EEV E727G contraption on ebay 
>>>> > https://www.ebay.com/itm/115697380857 ? 
>>>> > I have never even heard about it, nor can find any info about it. 
>>>> > 
>>>> > Marcin 
>>>> > 
>>>> > -- 
>>>> > You received this message because you are subscribed to the Google 
>>>> > Groups "neonixie-l" group. 
>>>> > To unsubscribe from this group and stop receiving emails from it, 
>>>> send 
>>>> > an email to neonixie-l+...@googlegroups.com 
>>>> > <mailto:neonixie-l+...@googlegroups.com>. 
>>>> > To view this discussion on the web, visit 
>>>> > 
>>>> https://groups.google.com/d/msgid/neonixie-l/b071b786-1aac-45b7-af9a-ce63eb1d1d17n%40googlegroups.com
>>>>  
>>>> > <
>>>> https://groups.google.com/d/msgid/neonixie-l/b071b786-1aac-45b7-af9a-ce63eb1d1d17n%40googlegroups.com?utm_medium=email_source=footer>.
>>>>  
>>>>
>>>>
>>> -- 
>>> You received this message because you are subscribed to the Google 
>>> Groups "neonixie-l" group.
>>>
>> To unsubscribe from this group and stop receiving emails from it, send an 
>>> email to neonixie-l+...@googlegroups.com.
>>> To view this discussion on the web, visit 
>>> https://groups.google.com/d/msgid/neonixie-l/0f9a983e-b30f-42b3-b8fa-a909402e29ebn%40googlegroups.com
>>>  
>>> <https://groups.google.com/d/msgid/neonixie-l/0f9a983e-b30f-42b3-b8fa-a909402e29ebn%40googlegroups.com?utm_medium=email_source=footer>
>>> .
>>>
>>

-- 
You received this message because you are subscribed to the Google Groups 
"neonixie-l" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to neonixie-l+unsubscr...@googlegroups.com.
To view this discussion on the web, visit 
https://groups.google.com/d/msgid/neonixie-l/e13a5127-83ed-4f49-b9dd-9141426f16d1n%40googlegroups.com.

[neonixie-l] Re: EEV E727G - what's that?

[Dekatron42]

It says in the auction text that "The picture with power-on display is from 
the WEB 'used equipment for a display of the same type'".

There are some bar-codes as well as other text in the last photo which 
might help with finding information. The first portions of the NSN number 
10ZZ356 can be found to be aviation parts, but the only part I found there 
was an unnamed item with 10ZZ356111, so the hunt is on.

/Martin

[image: Picture 10 of 10] 

On Tuesday, 7 February 2023 at 16:27:18 UTC+1 lest...@gmail.com wrote:

> I found this old page 
> It shows the same pictures as the ad! Strange.
>
> Olivier
>
> On Tuesday, 7 February 2023 at 6:36:26 pm UTC+8 marcin wrote:
>
>> Hi Guys,
>>
>> have you seen this EEV E727G contraption on ebay 
>> https://www.ebay.com/itm/115697380857 ?
>> I have never even heard about it, nor can find any info about it.
>>
>> Marcin
>>
>

-- 
You received this message because you are subscribed to the Google Groups 
"neonixie-l" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to neonixie-l+unsubscr...@googlegroups.com.
To view this discussion on the web, visit 
https://groups.google.com/d/msgid/neonixie-l/b071b786-1aac-45b7-af9a-ce63eb1d1d17n%40googlegroups.com.

Re: [neonixie-l] Are here any good small alarm clocks for use on night table?

[Dekatron42]

I'm sorry I forgot to mention that I was looking for one with Nixies.

/Martin

-- 
You received this message because you are subscribed to the Google Groups 
"neonixie-l" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to neonixie-l+unsubscr...@googlegroups.com.
To view this discussion on the web, visit 
https://groups.google.com/d/msgid/neonixie-l/2be1f177-8178-4063-b4e8-3c7df12efc9cn%40googlegroups.com.

[neonixie-l] Are here any good small alarm clocks for use on night table?

[Dekatron42]

Does anyone know of any good small alarm clock for use on night table, 
something that you have used yourself?

I've been googling for one but never found anything that is being made 
today, there are a few Kickstarter projects, and similar ones, but nothing 
that I can buy right now.

I'd really like to have a good one with several alarm times, preferably 
alarms on weekdays only (or adjustable for each day), dimming and other 
features are welcome too. Most clocks are just clocks but miss out on the 
alarm portion - they are usually stuffed with features but the alarm 
portion is almost always missing.

/Martin

-- 
You received this message because you are subscribed to the Google Groups 
"neonixie-l" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to neonixie-l+unsubscr...@googlegroups.com.
To view this discussion on the web, visit 
https://groups.google.com/d/msgid/neonixie-l/461ca174-fb59-4ea9-b51e-d0372e199ce7n%40googlegroups.com.

Re: [neonixie-l] Why tungsten wire and why weld copper to tungsten? Also book recommendation?

[Dekatron42]

There are still a lot of companies making glass to metal seals as these 
seals are used in a lot of equipment's where vacuum tight seals are needed, 
like in satellites, so you can google "glass to metal seal manufacturers" 
and try to learn more from them.

/Martin

-- 
You received this message because you are subscribed to the Google Groups 
"neonixie-l" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to neonixie-l+unsubscr...@googlegroups.com.
To view this discussion on the web, visit 
https://groups.google.com/d/msgid/neonixie-l/a32da062-b1df-4c1e-b91c-92aba1fb2d2bn%40googlegroups.com.

Re: [neonixie-l] Scope Clocks are available again

[Dekatron42]

Hmm, I can add both kit and assembled to the cart just now..

/Martin



On Saturday, 17 December 2022 at 21:55:35 UTC+1 J Forbes wrote:

> They're all gone
>
> [image: sc.jpg]
>
> On Saturday, December 17, 2022 at 1:32:00 PM UTC-7 Terry Bowman wrote:
>
>>
>> On Dec 17, 2022, at 7:22 AM, Wo Tu  wrote:
>>
>> No kits available ?! Only assembled !
>>
>>
>> Scroll to the bottom and select the kit.
>>
>>
>> Terry Bowman, KA4HJH
>> "The Mac Doctor"
>>
>> https://www.astarcloseup.com
>>
>> “...the book said something astonishing, a very big thought. The stars, 
>> it said, were suns but very far away. The Sun was a star but close 
>> up.”—Carl Sagan, "The Backbone Of Night", *Cosmos*, 1980
>>
>>
>>

-- 
You received this message because you are subscribed to the Google Groups 
"neonixie-l" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to neonixie-l+unsubscr...@googlegroups.com.
To view this discussion on the web, visit 
https://groups.google.com/d/msgid/neonixie-l/57898243-1ddc-4a2c-8ef7-717c71105f0bn%40googlegroups.com.

[neonixie-l] Re: Looking for Beam-X tubes

[Dekatron42]

I built a few clocks some years ago, both with the early DC106 modules 
(tube and diode based) and the later DC111A/B modules (transistor and diode 
based). Burroughs even described how to build clocks in some of their 
datasheets where they showed how to eliminate some spade positions if you 
wanted to count to any other number than from 0 to 9 and a clock was one of 
their simple projects.

To get a scale of six counter you can connect four consecutive spades 
together just using one set of spade components and using them as the reset 
signal to the flip-flop driving the Trochotron, it will then reset when any 
of the combined spades are hit by the beam. Then you just need a simple 
tube coincidence circuit for the hours portion to reset the clock to 
00:00:00 when it reaches 24:00:00 (you'll have to modify this for a 12 hour 
clock though). Burroughs also combined two spades in two groups making the 
DC111B count 0,1,2,5,8,9 so no extra reset signal was needed, the original 
one from spade 9 was used - this way the beam skipped positions 2 & 4 + 6 & 
7, you just hooked up the Nixie like 0-0, 1-1, 2-2, 5-3, 8-4 & 9-5 
(Spade-Nixie#).

You can see my original DC111A & DC111B modules here: 
https://youtu.be/4x8fR1NGFVA (counting 0-9) & https://youtu.be/O-JPo_Se10A 
(counting 0-5 with modification via two groups of combined spades).

/Martin

On Tuesday, 6 December 2022 at 03:13:16 UTC+1 LB wrote:

> Hi everyone, 
>
> I recently decided to begin designing a nixie clock with as few 
> semiconductors as possible, and that has lead me to dekatrons and Beam-X 
> tubes. I've never seen a clock that uses beam switching tubes, and I was 
> wondering if anyone has any they would be willing to sell. I'll need at 
> least 4 tubes in total. I'm looking specifically for the following types:
>
>- BX-2000
>- BX-2004
>- BX-1000
>- (any electrically equivalent tube)
>
> There is a listing on eBay currently, but the tube in the product image 
> has a big crack in the top, so that seems like a bit of a gamble. If you 
> have any and are looking to sell, send me a PM. (Bonus points if you have 
> the strange 26-pin sockets as well)
>

-- 
You received this message because you are subscribed to the Google Groups 
"neonixie-l" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to neonixie-l+unsubscr...@googlegroups.com.
To view this discussion on the web, visit 
https://groups.google.com/d/msgid/neonixie-l/47601fef-bfbb-495b-8314-bd68d7ff0324n%40googlegroups.com.

Re: [neonixie-l] Grabbing my popcorn...

[Dekatron42]

The auction says that it works fully.

Does anyone know what plugs into the black socket, a stepping relay or some 
other driver?

/Martin

On Saturday, 22 October 2022 at 19:39:04 UTC+2 gregebert wrote:

> Numerals 1,2, and 8 work. Any others ?
> Starting bid was 15 eurothat didn't last long.
>
> Good luck finding 3 to 5 more for a clock; I havn't seen one of these 
> monsters on the auction block for a long time.
> I'm guessing 950 euros. Not a lot players willing to join into that 
> high-stakes poker game.
>
> On Saturday, October 22, 2022 at 10:08:31 AM UTC-7 tntm...@gmail.com 
> wrote:
>
>> 1650
>>
>> On Sat, Oct 22, 2022, 12:56 PM bogdanpaduraru via neonixie-l <
>> neoni...@googlegroups.com> wrote:
>>
>>> 1900
>>>
>>> Sent from my iPhone
>>>
>>> On 22 Oct 2022, at 19:28, Nicholas Stock  wrote:
>>>
>>> 
>>> https://www.ebay.com/itm/354341639125
>>>
>>> Any guesses?
>>>
>>> Nick
>>>
>>> -- 
>>> You received this message because you are subscribed to the Google 
>>> Groups "neonixie-l" group.
>>> To unsubscribe from this group and stop receiving emails from it, send 
>>> an email to neonixie-l+...@googlegroups.com.
>>> To view this discussion on the web, visit 
>>> https://groups.google.com/d/msgid/neonixie-l/CAOX%2BRHLfDKLodmhGZ0bdH-ji4pT7QW4G5p%3DjNDgBiACPcAf8ew%40mail.gmail.com
>>>  
>>> 
>>> .
>>>
>>> -- 
>>> You received this message because you are subscribed to the Google 
>>> Groups "neonixie-l" group.
>>> To unsubscribe from this group and stop receiving emails from it, send 
>>> an email to neonixie-l+...@googlegroups.com.
>>>
>> To view this discussion on the web, visit 
>>> https://groups.google.com/d/msgid/neonixie-l/1EA17CE6-7245-4679-A32F-2E9AB89745D3%40yahoo.com
>>>  
>>> 
>>> .
>>>
>>

-- 
You received this message because you are subscribed to the Google Groups 
"neonixie-l" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to neonixie-l+unsubscr...@googlegroups.com.
To view this discussion on the web, visit 
https://groups.google.com/d/msgid/neonixie-l/c0b6a1a9-0b0f-4596-bf44-7ad5759e108fn%40googlegroups.com.

[neonixie-l] Instruction and/or service manual for Schneider/Honywell Digitest 102?

[Dekatron42]

Hi,

Does anyone have an instruction and/or service manual for the 
Schneider/Honywell Digitest 102 as a PDF-file that they can share?

I've been Googling and haven't found anything.

/Martin

-- 
You received this message because you are subscribed to the Google Groups 
"neonixie-l" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to neonixie-l+unsubscr...@googlegroups.com.
To view this discussion on the web, visit 
https://groups.google.com/d/msgid/neonixie-l/727e3100-1f83-44d6-b770-97ab93ddad9cn%40googlegroups.com.

[neonixie-l] Re: E1T tubes

[Dekatron42]

I don't know myself but I think that Ronald Dekker should know, you can 
read his excellent information here: 
https://www.dos4ever.com/trochotron/TROCH.html and also send him an email 
and ask.

/Martin

On Friday, 7 October 2022 at 16:23:15 UTC+2 Robert wrote:

> Not nixie, but does anyone know between which dates they were made, 1952 
> to 1960?
>
> Thanks
> Rob

-- 
You received this message because you are subscribed to the Google Groups 
"neonixie-l" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to neonixie-l+unsubscr...@googlegroups.com.
To view this discussion on the web, visit 
https://groups.google.com/d/msgid/neonixie-l/7501bff3-d8dd-4da6-99e2-a1440334f327n%40googlegroups.com.

[neonixie-l] Strange eBay listing text.....

[Dekatron42]

I just clicked the eBay photo for a GR10G Nixie listing and now I wonder 
what eBay is up to: https://www.ebay.com/itm/115546867348 the title is 
funny but clicking the link "Show original title" shows the correct 
title.

/Martin

-- 
You received this message because you are subscribed to the Google Groups 
"neonixie-l" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to neonixie-l+unsubscr...@googlegroups.com.
To view this discussion on the web, visit 
https://groups.google.com/d/msgid/neonixie-l/e87663ef-6325-4c0d-81c4-ef89211e88e4n%40googlegroups.com.

Re: [neonixie-l] Pandicon

[Dekatron42]

It's multiplexed, simple design example here: 
https://www.radiomuseum.org/tubes/tube_zm1206.html

It's important to adjust the bias voltages properly to limit "bleeding" 
between digits.

/Martin

On Wednesday, 5 October 2022 at 19:50:22 UTC+2 gregebert wrote:

> Is the Pandicon multiplexed, or does it use some kind of clever 
> storage/shifting ?
>
> On Wednesday, October 5, 2022 at 10:12:26 AM UTC-7 Robert wrote:
>
>> [image: image0.jpeg]
>>
>> Thanks
>> Rob
>>
>> On 5 Oct 2022, at 18:09, Audrey  wrote:
>>
>> 
>>
>> I got my hopes up for a different kind of Pandicon but that's a good deal 
>> for some zm1500, there's some on ebay but without the sockets.
>>
>> On Wed, Oct 5, 2022, 1:07 PM artg...@googlemail.com  
>> wrote:
>>
>>> CuriousMarc has just released a video of a calculator repair involving 
>>> eightron 7-segment neon tubes, which he mentions are very rare but fairly 
>>> similar in appearance to Panaplex multi-digit tubes.
>>>
>>> I see that Langrex, a UK surplus supplier specialising in valves has 
>>> somewhat similar Pandicons in reasonable quantity, which may be useful to 
>>> someone.
>>>
>>> https://www.langrex.co.uk/products/zm1500-vintage-12-digit-nixie-display/
>>>
>>> -adrian
>>>  
>>>
>>> -- 
>>> You received this message because you are subscribed to the Google 
>>> Groups "neonixie-l" group.
>>> To unsubscribe from this group and stop receiving emails from it, send 
>>> an email to neonixie-l+...@googlegroups.com.
>>> To view this discussion on the web, visit 
>>> https://groups.google.com/d/msgid/neonixie-l/093fd0d1-84f9-4e8a-a113-c9d086a45830n%40googlegroups.com
>>>  
>>> 
>>> .
>>>
>> -- 
>> You received this message because you are subscribed to the Google Groups 
>> "neonixie-l" group.
>> To unsubscribe from this group and stop receiving emails from it, send an 
>> email to neonixie-l+...@googlegroups.com.
>>
>> To view this discussion on the web, visit 
>> https://groups.google.com/d/msgid/neonixie-l/CAPDJQ6As95xicWvxrjjeGh4iqPAYDpz5ewiP7j5s31jtddGabQ%40mail.gmail.com
>>  
>> 
>> .
>>
>>

-- 
You received this message because you are subscribed to the Google Groups 
"neonixie-l" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to neonixie-l+unsubscr...@googlegroups.com.
To view this discussion on the web, visit 
https://groups.google.com/d/msgid/neonixie-l/728742b5-79fb-475e-acc9-c7517b4af134n%40googlegroups.com.

Re: [neonixie-l] NIMO

[Dekatron42]

Nice to see one more 6 digit Nimo clock!

There's at least one other 6 digit Nimo clock that was shown on Youtube 
about a year ago: https://www.youtube.com/watch?v=JA1oeqavMg8=3s

/Martin

On Tuesday, 27 September 2022 at 16:13:27 UTC+2 gregebert wrote:

> Really nice work!   Congratulations on being the first 6-tube NIMO clock 
> I've ever seen or heard of.
>
> On Tuesday, September 27, 2022 at 1:58:53 AM UTC-7 jörg wrote:
>
>> Just a small update,
>> I've made a short video regarding the build of my 6 tube nimo clock.
>> And thank's a lot to astroschmidt to sell me one of his nimo's to 
>> complete my clock.
>> You sure will see his nimo in the video. 
>>
>> https://www.youtube.com/watch?v=VAhWgG5TKMg
>>
>> All the best to gregebert project and his brand new nimo's.
>> On Wednesday, October 21, 2020 at 1:24:27 PM UTC+2 w...@kitsunegari.net 
>> wrote:
>>
>>> On Sunday, October 4, 2020 at 3:09:46 PM UTC+2 jörg wrote:
>>>
 So, if there is someone in the group, who is willing to sell a nimo 
 which might join the other five, pls. pm me.
>>>
>>>
>>> You could ask Fran Blanche
>>> She's got a few Tubes and only has 1 in use and not enough to build a 
>>> clock.
>>> Maybe she's willing to part with one "for science".
>>> Tell her you're building a 6-tube clock and she's your only hope...
>>> https://www.youtube.com/channel/UCMLgHbpJ8qYqj3CkdbvC0Ww
>>>  
>>>
>>

-- 
You received this message because you are subscribed to the Google Groups 
"neonixie-l" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to neonixie-l+unsubscr...@googlegroups.com.
To view this discussion on the web, visit 
https://groups.google.com/d/msgid/neonixie-l/0c46c63a-f80b-4e90-b852-a828b869cb4cn%40googlegroups.com.

Re: [neonixie-l] Finding NIMO: Chapter 1 - The Arrival

[Dekatron42]

The datasheet IEE_Nimo_808.PDF that can be found on the internet mentions 
"Time sharing" (multiplexing) and I have just glanced at it to see if it 
would make the circuit simpler.

Is the brightness difference a problem?

Is it possible to compensate for it by using a filter or by using a series 
resistor with the anode or by any other means?

Thanks for sharing the data on the heater/anode measurements and the 
project as a whole!

/Martin

On Sunday, 25 September 2022 at 23:23:38 UTC+2 gregebert wrote:

> Direct-drive. I never considered multiplexing them, though it might be 
> possible due to phosphor persistence.
> Now that I've powered-up 4 tubes and gathered more data, I'm seeing 
> tube-to-tube differences in brightness which is not only visible, but also 
> measurable via anode current. That could complicate multiplexing.
>
>
> On Sunday, September 25, 2022 at 1:35:50 PM UTC-7 Dekatron42 wrote:
>
>> Does your design run them multiplexed or direct drive?
>>
>> /Martin
>>
>> On Saturday, 24 September 2022 at 08:28:31 UTC+2 gregebert wrote:
>>
>>> It's not a dollars-and-cents answer. I've spent hundreds of hours, and a 
>>> fair amount of money on the research, design, debug and development to get 
>>> this very complex design working. At a future date, there will be a limited 
>>> number of tubes made available for sale by the co-sponsor of this project 
>>> and I will be making the design available for others to download (free of 
>>> course) once it's been proven to be stable and reliable with 6 tubes. I 
>>> will forewarn that the board has some challenging SMT parts, and requires 
>>> the FPGA to be programmed. It's just unfortunate that NIMO tubes are so 
>>> rare.
>>>
>>> On Friday, September 23, 2022 at 11:06:50 PM UTC-7 tntm...@gmail.com 
>>> wrote:
>>>
>>>> How much did all this cost you? O.o
>>>>
>>>> On Sat, Sep 24, 2022, 2:05 AM gregebert  wrote:
>>>>
>>>>> Well, it's been a long haul since this project started in 2017, and 
>>>>> today was a major milestone with the arrival of 3 more tubes. They are 
>>>>> re-joining their sibling after 5 years.
>>>>>
>>>>> [image: IMG_0421.JPG]
>>>>>
>>>>> Filament data was gathered and verified to be consistent with the 
>>>>> first tube. so tomorrow I can begin powering-up each one individually and 
>>>>> gather more data before I dare take a chance and plug all of them into 
>>>>> the 
>>>>> clock. Besides, 3 more just landed at the airport and are waiting to be 
>>>>> delivered.
>>>>>
>>>>> More details to follow in the coming week, or weeks (plural) if there 
>>>>> are problems.
>>>>>
>>>>> [image: image.png]
>>>>>
>>>>> -- 
>>>>> You received this message because you are subscribed to the Google 
>>>>> Groups "neonixie-l" group.
>>>>> To unsubscribe from this group and stop receiving emails from it, send 
>>>>> an email to neonixie-l+...@googlegroups.com.
>>>>> To view this discussion on the web, visit 
>>>>> https://groups.google.com/d/msgid/neonixie-l/6bca9c12-017e-4844-8ee3-91845bafac4bn%40googlegroups.com
>>>>>  
>>>>> <https://groups.google.com/d/msgid/neonixie-l/6bca9c12-017e-4844-8ee3-91845bafac4bn%40googlegroups.com?utm_medium=email_source=footer>
>>>>> .
>>>>>
>>>>

-- 
You received this message because you are subscribed to the Google Groups 
"neonixie-l" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to neonixie-l+unsubscr...@googlegroups.com.
To view this discussion on the web, visit 
https://groups.google.com/d/msgid/neonixie-l/2e069406-294a-4b16-9f2b-fa430f4978e2n%40googlegroups.com.

Re: [neonixie-l] Finding NIMO: Chapter 1 - The Arrival

[Dekatron42]

Does your design run them multiplexed or direct drive?

/Martin

On Saturday, 24 September 2022 at 08:28:31 UTC+2 gregebert wrote:

> It's not a dollars-and-cents answer. I've spent hundreds of hours, and a 
> fair amount of money on the research, design, debug and development to get 
> this very complex design working. At a future date, there will be a limited 
> number of tubes made available for sale by the co-sponsor of this project 
> and I will be making the design available for others to download (free of 
> course) once it's been proven to be stable and reliable with 6 tubes. I 
> will forewarn that the board has some challenging SMT parts, and requires 
> the FPGA to be programmed. It's just unfortunate that NIMO tubes are so 
> rare.
>
> On Friday, September 23, 2022 at 11:06:50 PM UTC-7 tntm...@gmail.com 
> wrote:
>
>> How much did all this cost you? O.o
>>
>> On Sat, Sep 24, 2022, 2:05 AM gregebert  wrote:
>>
>>> Well, it's been a long haul since this project started in 2017, and 
>>> today was a major milestone with the arrival of 3 more tubes. They are 
>>> re-joining their sibling after 5 years.
>>>
>>> [image: IMG_0421.JPG]
>>>
>>> Filament data was gathered and verified to be consistent with the first 
>>> tube. so tomorrow I can begin powering-up each one individually and gather 
>>> more data before I dare take a chance and plug all of them into the clock. 
>>> Besides, 3 more just landed at the airport and are waiting to be delivered.
>>>
>>> More details to follow in the coming week, or weeks (plural) if there 
>>> are problems.
>>>
>>> [image: image.png]
>>>
>>> -- 
>>> You received this message because you are subscribed to the Google 
>>> Groups "neonixie-l" group.
>>> To unsubscribe from this group and stop receiving emails from it, send 
>>> an email to neonixie-l+...@googlegroups.com.
>>> To view this discussion on the web, visit 
>>> https://groups.google.com/d/msgid/neonixie-l/6bca9c12-017e-4844-8ee3-91845bafac4bn%40googlegroups.com
>>>  
>>> 
>>> .
>>>
>>

-- 
You received this message because you are subscribed to the Google Groups 
"neonixie-l" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to neonixie-l+unsubscr...@googlegroups.com.
To view this discussion on the web, visit 
https://groups.google.com/d/msgid/neonixie-l/a89c91e5-0d9c-4ae5-a9a2-f3122820c374n%40googlegroups.com.

Re: [neonixie-l] Is there any merit to the claim that ceramic tube sockets crack tube pins?

[Dekatron42]

I wrote about tje tester her: 
 https://groups.google.com/g/neonixie-l/c/z_XVbXeB4ks/m/uKYNIBGXHVgJ

/Martin
On Wednesday, 31 August 2022 at 23:38:13 UTC+2 Tidak Ada wrote:

> Hi Martin,
>
>  
>
> That makes sense !
>
>  
>
> I am highly interested
>
> Is there any possibility that I can get more information about the tester? 
>
> Schema and also about the difference in supply for the EZ10A and EZ10B
>
> I would highly appreciate that.
>
>  
>
> Cheers,
>
> eric
>
>  
>
>  
>

-- 
You received this message because you are subscribed to the Google Groups 
"neonixie-l" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to neonixie-l+unsubscr...@googlegroups.com.
To view this discussion on the web, visit 
https://groups.google.com/d/msgid/neonixie-l/96e3dcb1-be51-463d-9ec9-80c5e53bed27n%40googlegroups.com.

Re: [neonixie-l] FS: 5 NOS 5870

[Dekatron42]

Burroughs did at least own one factory in Japan according to this link: 
https://www.computerwoche.de/a/burroughs-will-in-japan-produzieren,1200932 
however it doesn't say if it produced Nixies.

Google translate for the link:

--
TOKYO - Burroughs Corp.'s Japanese sales company, Takachiho Burroughs Co, 
has acquired Takachiho Koeki Co's Gotemba plant, which manufactures 
minicomputers, POS terminals and DV accessories. The distribution of the 
devices had previously largely gone through Takachiho Burroughs. At the end 
of 1975, Burroughs had increased its stake in the Japanese sales company 
from 50 to 95 percent - since then its partner Takachiho Koeki Co has only 
held 5 percent of the shares. The Japanese Ministry of Trade and Industry 
(MITI) has approved the sale of the plant and Burroughs production plans. 
--

The same information about a Burroughs factory in Japan can be found here: 
http://www.burroughsinfo.com/manufacturing-locations.html

/Martin

On Monday, 22 August 2022 at 15:46:17 UTC+2 Paul Andrews wrote:

> I doubt that Burroughs had a factory in Japan. I suspect that they were 
> made in Japan for Burroughs. I also suspect that the same tubes were made 
> for other companies and badged for them.
>
> On Sunday, August 21, 2022 at 12:32:58 AM UTC-4 nixiebunny wrote:
>
>> Yes, JRC is Japan Radio. But did they have a Nixie tube factory, or did 
>> they print their name on tubes made by another company? These tubes were 
>> made using rather sophisticated methods, and the tooling would be rather 
>> unique.
>> Did JRC make Nixie tubes? Did Burroughs make Nixie tubes in Japan? 
>> (I just popped the back off a c.1960 five tube radio made by Monarch in 
>> Japan, and it is full of Matsushita tubes.)
>> It's an interesting question. 
>>
>>
>>
>>
>>
>> On Sat, Aug 20, 2022, 5:15 PM Charles MacDonald  
>> wrote:
>>
>>> On 2022-08-20 14:25, David Forbes wrote:
>>> > Max,
>>> > Thanks for the photo. These JRC tubes look very similar to Japanese 
>>> > Burroughs B-5870 tubes. It's likely they were made in the same 
>>> factory, 
>>> > but I don't know whose factory it was.
>>>
>>> JRC?  (Japan Radio Company)
>>>
>>> -- 
>>> Charles MacDonald  VA3CPY
>>>
>>

-- 
You received this message because you are subscribed to the Google Groups 
"neonixie-l" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to neonixie-l+unsubscr...@googlegroups.com.
To view this discussion on the web, visit 
https://groups.google.com/d/msgid/neonixie-l/5cd9d531-cb8a-42a2-bf0a-d320e615dcc3n%40googlegroups.com.

Re: [neonixie-l] Set of six GR10J on eBay!

[Dekatron42]

I believe they hadn't come as far as to add Mercury to the gas mix at this 
stage in time.

/Martin

On Friday, 12 August 2022 at 19:21:57 UTC+2 nickja...@gmail.com wrote:

> Those look really sweet.
>
> So did they stop using mercury because of the environmental psychosis, or 
> was there an actual legitimate reason?
>
> On Fri, Aug 12, 2022 at 8:44 AM Paul Andrews  wrote:
>
>> Interesting they are ETL. Mine are Hivac. It took me a long time to get a 
>> set of 6. I didn't run this clock with these tubes in it for long, because 
>> of the lack of Hg.
>> [image: 6F36DF9E-1657-4BBF-891C-2BEF1F623E5B_1_105_c.jpeg]
>>
>> On Friday, August 12, 2022 at 12:53:33 AM UTC-4 Kevin A. wrote:
>>
>>> I feel like PIRs are a must on most nix clocks. Why burn up tubes when 
>>> no one is around to enjoy the glow? Seems like a total waste. 
>>>
>>> For older stuff that doesn't have PIR compatability built in, you can 
>>> always get an external PIR controlled switch: 
>>> https://www.amazon.com/gp/aw/d/B00KAB4CRG?psc=1=ppx_pop_mob_b_asin_title
>>>
>>> On Thu, Aug 11, 2022, 9:36 PM Nicholas Stock  wrote:
>>>
>>>> Datasheet does give an expected lifetime of 10,000 hrs, which is pretty 
>>>> good. Put a PIR on a clock with them and it'll last a long time...
>>>>
>>>> On Thu, Aug 11, 2022 at 6:17 PM Audrey  wrote:
>>>>
>>>>> > No Hg
>>>>>
>>>>> That's quite unfortunate for such nice tubes
>>>>>
>>>>> On Thu, Aug 11, 2022, 8:51 PM Nicholas Stock  
>>>>> wrote:
>>>>>
>>>>>> No Hg in those puppies IIRC.
>>>>>>
>>>>>> On Thu, Aug 11, 2022 at 3:43 PM Audrey  wrote:
>>>>>>
>>>>>>> To infinity and beyond...
>>>>>>>
>>>>>>> On Thu, Aug 11, 2022, 6:42 PM Dekatron42  
>>>>>>> wrote:
>>>>>>>
>>>>>>>> A set of six GR10J on eBay: 
>>>>>>>> https://www.ebay.com/itm?itemId=134195749943=1
>>>>>>>>
>>>>>>>> Not my listing….
>>>>>>>>
>>>>>>>>
>>>>>>>> -- 
>>>>>>>> You received this message because you are subscribed to the Google 
>>>>>>>> Groups "neonixie-l" group.
>>>>>>>> To unsubscribe from this group and stop receiving emails from it, 
>>>>>>>> send an email to neonixie-l+...@googlegroups.com.
>>>>>>>> To view this discussion on the web, visit 
>>>>>>>> https://groups.google.com/d/msgid/neonixie-l/d6411510-538f-41ef-8438-e7cb34c283b2n%40googlegroups.com
>>>>>>>>  
>>>>>>>> <https://groups.google.com/d/msgid/neonixie-l/d6411510-538f-41ef-8438-e7cb34c283b2n%40googlegroups.com?utm_medium=email_source=footer>
>>>>>>>> .
>>>>>>>>
>>>>>>> -- 
>>>>>>> You received this message because you are subscribed to the Google 
>>>>>>> Groups "neonixie-l" group.
>>>>>>> To unsubscribe from this group and stop receiving emails from it, 
>>>>>>> send an email to neonixie-l+...@googlegroups.com.
>>>>>>> To view this discussion on the web, visit 
>>>>>>> https://groups.google.com/d/msgid/neonixie-l/CAPDJQ6CHTgP8gqzAaB6qHUxrZ7Deoeiu-fo9WnSEk5kEwo%3Dv%3DA%40mail.gmail.com
>>>>>>>  
>>>>>>> <https://groups.google.com/d/msgid/neonixie-l/CAPDJQ6CHTgP8gqzAaB6qHUxrZ7Deoeiu-fo9WnSEk5kEwo%3Dv%3DA%40mail.gmail.com?utm_medium=email_source=footer>
>>>>>>> .
>>>>>>>
>>>>>> -- 
>>>>>> You received this message because you are subscribed to the Google 
>>>>>> Groups "neonixie-l" group.
>>>>>> To unsubscribe from this group and stop receiving emails from it, 
>>>>>> send an email to neonixie-l+...@googlegroups.com.
>>>>>> To view this discussion on the web, visit 
>>>>>> https://groups.google.com/d/msgid/neonixie-l/CAOX%2BRHJ0ZjQ7crnwNAxpn_Wy13wh-LPBgUoA%2BVfkuzfOHD1X%2BA%40mail.gmail.com
>>>>>>  
>>>>>> <https://groups.google.com/d/msgid/neonixie-l/CAOX%2BRHJ0ZjQ7crnwNAxpn_Wy13wh-LPBgUoA%2BVfkuzfOHD1X%2BA%40mail.gmail.com?utm_medium=email_source=footer>
&

[neonixie-l] Set of six GR10J on eBay!

[Dekatron42]

A set of six GR10J on 
eBay: https://www.ebay.com/itm?itemId=134195749943=1

Not my listing….


-- 
You received this message because you are subscribed to the Google Groups 
"neonixie-l" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to neonixie-l+unsubscr...@googlegroups.com.
To view this discussion on the web, visit 
https://groups.google.com/d/msgid/neonixie-l/d6411510-538f-41ef-8438-e7cb34c283b2n%40googlegroups.com.

Re: [neonixie-l] Re: what is that CRT-like tube?

[Dekatron42]

My first thought was that it could have been use for electron microscopy, 
either as the main beam or as an extra beam used for projecting text onto 
the screen you see the object in where you also can see magnification and 
voltages/currents and also onto the hard copy film.

I got to know a gentleman who worked in the physics department at a 
university here in Sweden as I bought some Nixies and Dekatron counters 
from him and he told me that they even used rows of Nixies that had their 
digits displayed onto the screen and the photographic film via a 
complicated setup of lenses in one of the electron microscopes that he used 
while working there. Now he works with scrap metal and dismantles and sells 
old electron microscopes either for their scrap or as whole working units, 
he sells a lot of other instruments and gears from physics departments all 
over the country and in some European countries.

/Martin

On Sunday, 5 June 2022 at 06:31:07 UTC+2 marcin wrote:

> x-ray tube was my initial thought too - the first 2 pics. But the 3-rd and 
> 4-th pic show how long this tube is. Plus the 3 'guns': They really look 
> like electron guns, with Wehnelt and focusing. Have you seen cathodes like 
> this on x-ray tube? And three of them? I don't think it could be a 
> photomultiplier either.
> For now, I put it under 'weird contraption, likely experimental'.
>
> Thanks everybody for contributing!
> Marcin
>
>
>
> On 4/06/2022 18:57, Alex wrote:
>
> My vote is that this is not designed as a display device, the business end 
> looks like it has ceramic donuts around it, possibly for heat dissipation, 
> so it could a source device (high freq signal / microwave). Could be a 
> Beryllium window at the end so could even be an X-Ray emitter but the rest 
> of the design does not really fit for that. 
>
> It is possibly / quite likely the more i ponder that it is a scintillation 
> window on the end and the tube itself a photomultiplier for detecting 
> radiation, they have a similar form factor to that, in which case that was 
> a superb price.
>
> Looks expensive either way, but a good price on there, though if its full 
> of hazardous materials (Beryllium) then thats a concern...
>
> Nice find.
> On Saturday, 4 June 2022 at 04:07:50 UTC+1 marcin wrote:
>
>> Hi Guys, 
>>
>> this CRT-style was recently sold on Ebay: 
>> https://www.ebay.com/itm/115400617434 (I was not the seller nor the 
>> buyer). I have never seen anything like this before. It seems to have 3 
>> separate guns (RGB?) but the number of pins in the base suggests almost 
>> no control over the beams. And what is the wine bottle style topend? I 
>> am totally bamboozled. 
>>
>> Cheers, 
>> Marcin 
>>
> -- 
> You received this message because you are subscribed to the Google Groups 
> "neonixie-l" group.
> To unsubscribe from this group and stop receiving emails from it, send an 
> email to neonixie-l+...@googlegroups.com.
> To view this discussion on the web, visit 
> https://groups.google.com/d/msgid/neonixie-l/1351fef2-0659-435e-ad71-6bad03551c40n%40googlegroups.com
>  
> 
> .
>
>
>

-- 
You received this message because you are subscribed to the Google Groups 
"neonixie-l" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to neonixie-l+unsubscr...@googlegroups.com.
To view this discussion on the web, visit 
https://groups.google.com/d/msgid/neonixie-l/93a8a17b-6bc5-4e9a-9b6c-09ecaa162386n%40googlegroups.com.

Re: [neonixie-l] Colon light pipe

[Dekatron42]

It might also be possible to use ordinary LED light guides. A thin tube, 
metal or plastic, where you just drill holes for short LED light guides 
will probably work too.

Tektronix, and other instrument makers, used light guides for NE2 Neon 
indicators with either short light guides (sometimes without too) and in 
some cases long twisting light guides for indication on the front panel.

/Martin

On Thursday, 26 May 2022 at 21:04:52 UTC+2 nei...@gmail.com wrote:

> You can't really use a filament printer for something like this.  In order 
> to obtain the right optical properties and hold mechanical tolerances, a UV 
> cured resin printer must be used.  Because of my work I have access to 
> several dozen different printers.  In the end I chose a Formlabs printer 
> using  this resin:
>
> [image: Formlabs General Purpose 3D Printing Materials.png] 
>
> Alternatively, one could use a 3D print service bureau such as Protolabs 
> here in the U.S.
>
>
> On Thursday, May 26, 2022 at 1:07:03 PM UTC-5 gregebert wrote:
>
>> What kind of material is it ? I've only used PLA, trouble-free for many 
>> years now, because others I know have had all sorts of problems with other 
>> materials.
>>
>> On Thursday, May 26, 2022 at 6:48:48 AM UTC-7 martin martin wrote:
>>
>>> I like it!
>>>
>>>
>>>
>>> ~
>>> *mcve...@gmail.com*
>>>
>>>
>>> On Thu, May 26, 2022 at 6:40 AM Neil QQ  wrote:
>>>
 Here's a 3D printed colon light pipe design for anybody that's 
 interested.  A standard T2 neon lamp sits inside the pipe. 

 [image: Nixie Colon Light Pipe Installed.JPG]


 Units=Inches

 [image: Nixie Colon Light Pipe Drawing.JPG]
 The pipe is 3D printed with clear material.  A scrap piece of tubing is 
 used as a mask to block light transmission except for the colon dots.
 [image: Nixie Colon Light Pipe with Mask.JPG]

 The stl file is attached.

 -- 
 You received this message because you are subscribed to the Google 
 Groups "neonixie-l" group.
 To unsubscribe from this group and stop receiving emails from it, send 
 an email to neonixie-l+...@googlegroups.com.
 To view this discussion on the web, visit 
 https://groups.google.com/d/msgid/neonixie-l/1bc503ad-9073-4e9d-b033-72b2e1780b84n%40googlegroups.com
  
 
 .

>>>

-- 
You received this message because you are subscribed to the Google Groups 
"neonixie-l" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to neonixie-l+unsubscr...@googlegroups.com.
To view this discussion on the web, visit 
https://groups.google.com/d/msgid/neonixie-l/0c21117a-72e0-40d0-aab4-a96b94c406b5n%40googlegroups.com.

Re: [neonixie-l] Ceramic output capacitors on MAX1771 converter?

[Dekatron42]

If I remember correctly my colleagues spoke about the normal capacitor 
reforming by applying voltage to them after long storage (1-2years or more 
in storage) and also the "resetting" that they are subjected to when 
soldering: https://ec.kemet.com/blog/mlcc-dielectric-differences/

" Ceramic Capacitor Aging 

Aging is another characteristic exhibited by ferroelectric, or Class II and 
III dielectrics. While manufacturing the ceramic capacitor, the dielectric 
is exposed to temperatures more than 1000°C. For Barium Titanate devices, 
the Curie temperature can be in the range of 130°C to 150°C, depending on 
the particular formulation. When exposed to the Curie temperature, the 
crystalline structure aligns to a tetragonal pattern. Once cooled, the 
ceramic’s crystalline structure changes to a cubic change. As this 
structure changes, so does the material’s dielectric constant.

Over time, the capacitance will continue to decline. It is possible to 
reset this aging cycle by “resetting” the material, by exposing it to its 
Curie temperature this usually occurs during re-flow. Typically, you can 
find the aging rate in the catalog for a particular part type. Below is an 
example of aging rates:"

Our problems started when capacitors started to break and/or fall of the 
circuit boards even though our designed were approved by the capacitor 
manufacturer! We also experienced the problems with degrading capacitance 
in MLCC capacitors but it was even worse with self-healing polypropylene 
capacitors as it affected the smart-meters power supplies - it all turned 
out to be manufacturing problems of the capacitors due to moisture in the 
materials.

https://www.researchgate.net/publication/348506751_Analysis_of_Failure_Mechanism_of_Smart_Meter_Capacitance

"In practical applications, smart meters will fail, and even have batch 
quality problems. In addition to the sampling inspection of the arrival 
quality of smart meters, the analysis of the failure mechanism of smart 
meters has become an important and long-term task. This article mainly 
analyzes the component capacitance commonly used in smart meters, and 
analyses the failure of chip multilayer ceramic dielectric capacitors from 
appearance observation, electrical parameter testing, metallographic 
slicing, and at the same time from electrolytic appearance observation, 
electrical parameter testing, X- RAY, SEM and EDS for failure analysis. The 
results of failure mechanism research not only help to improve the 
reliability of the domestic energy meter manufacturing level, but also can 
save energy meter maintenance and transformation costs, and have very 
important practical significance for the construction of smart grids."

/Martin

On Friday, 20 May 2022 at 07:27:22 UTC+2 iavine wrote:

> Could someone explain what the reforming involves ?
>
> Thanks
> Ian
>
> On 20 May 2022, at 06:12, SWISSNIXIE - Jonathan F.  
> wrote:
>
> I've used a MAX1771 with ceramic capacitors a while ago for a 
> pandicon-circuit and a smaller nixie project. Both consume less than 
> 15mA@170V. Not sure how the circuit would behave at more current. 
>
>
> On Thursday, 19 May 2022 at 20:03:18 UTC+2 Dekatron42 wrote:
>
>> A few other things that I experienced at my previous employer was that 
>> larger (sizewise) MLCC capacitors easily developed cracks, came loose from 
>> the circuit board and also needed reforming after storage.
>>
>> /Martin
>>
>> On Thursday, 19 May 2022 at 05:01:25 UTC+2 mo...@neonixie.com wrote:
>>
>>> Roger,
>>>
>>> Yes. Looks like the common dielectrics (X7T, X7R) available in the 250v 
>>> 1-3uf range suffer from a 30-80% reduction in capacitance at 180v. I hadn't 
>>> realized it was that high.
>>> Thank you, I'll look at the polymer caps. It's my last remaining 
>>> electrolytic on my board and if possible I would like to use a solid one 
>>> instead.
>>>
>>> Regards,
>>> -Moses
>>>
>>> On Wednesday, May 18, 2022 at 7:54:10 PM UTC-7 Roger Brinkman wrote:
>>>
>>>> Hi Moses,
>>>>
>>>> What David writes below about the capacitance reduction of ceramic 
>>>> capacitors is correct. 
>>>> I have experienced success using polymer aluminium electrolytics (solid 
>>>> electrolyte) to replace conventional low-ESR electrolytic capacitors that 
>>>> regularly fail in similar applications. 
>>>> You might like to experiment with these. 
>>>>
>>>> Best regards 
>>>> Roger Brinkman. 
>>>>
>>>> On 19 May 2022, at 12:42 pm, David Forbes  wrote:
>>>>
>>>> 
>>>>
>>>> I haven't tried it, but I can make some observations.

Re: [neonixie-l] Ceramic output capacitors on MAX1771 converter?

[Dekatron42]

A few other things that I experienced at my previous employer was that 
larger (sizewise) MLCC capacitors easily developed cracks, came loose from 
the circuit board and also needed reforming after storage.

/Martin

On Thursday, 19 May 2022 at 05:01:25 UTC+2 mo...@neonixie.com wrote:

> Roger,
>
> Yes. Looks like the common dielectrics (X7T, X7R) available in the 250v 
> 1-3uf range suffer from a 30-80% reduction in capacitance at 180v. I hadn't 
> realized it was that high.
> Thank you, I'll look at the polymer caps. It's my last remaining 
> electrolytic on my board and if possible I would like to use a solid one 
> instead.
>
> Regards,
> -Moses
>
> On Wednesday, May 18, 2022 at 7:54:10 PM UTC-7 Roger Brinkman wrote:
>
>> Hi Moses,
>>
>> What David writes below about the capacitance reduction of ceramic 
>> capacitors is correct. 
>> I have experienced success using polymer aluminium electrolytics (solid 
>> electrolyte) to replace conventional low-ESR electrolytic capacitors that 
>> regularly fail in similar applications. 
>> You might like to experiment with these. 
>>
>> Best regards 
>> Roger Brinkman. 
>>
>> On 19 May 2022, at 12:42 pm, David Forbes  wrote:
>>
>> 
>>
>> I haven't tried it, but I can make some observations. The MAX1771 isn't 
>> connected directly to the output circuit, so it's not likely to suffer from 
>> a problem. The current flows through the inductor which will accommodate a 
>> momentary short circuit caused by the capacitor. 
>> In short, it shouldn't be a problem.
>> Bear in mind that the effective capacitance of a modern ceramic capacitor 
>> is much lower with a DC bias near its rated voltage, so you would need to 
>> use either capacitors rated for 5x the output voltage, or about 5x the 
>> desired capacitance.
>> Some capacitor data sheets publish this reduction in capacitance as a 
>> function of bias voltage, most don't. Look for it.
>>
>>
>> On Wed, May 18, 2022, 6:49 PM Moses  wrote:
>>
>>> Before I let the magic smoke out of half a dozen MAX1771 ICs.. has 
>>> anyone ever tried using ceramic output capacitors? It wants a low ESR 
>>> capacitor, so ceramics may work well.
>>>
>>> The datasheet doesn't mention ceramics on the output side.. but then 
>>> again it was written a few decades ago when the required 
>>> voltage/capacitance probably was not readily available.
>>>
>>> Regards,
>>> -Moses
>>>
>>> -- 
>>> You received this message because you are subscribed to the Google 
>>> Groups "neonixie-l" group.
>>> To unsubscribe from this group and stop receiving emails from it, send 
>>> an email to neonixie-l+...@googlegroups.com.
>>> To view this discussion on the web, visit 
>>> https://groups.google.com/d/msgid/neonixie-l/7ae38dca-64ca-459d-a1e5-283a062f8f9en%40googlegroups.com
>>>  
>>> 
>>> .
>>>
>> -- 
>> You received this message because you are subscribed to the Google Groups 
>> "neonixie-l" group.
>> To unsubscribe from this group and stop receiving emails from it, send an 
>> email to neonixie-l+...@googlegroups.com.
>>
>> To view this discussion on the web, visit 
>> https://groups.google.com/d/msgid/neonixie-l/CAPbqtvcg0ak%2BLMH_7JJ01eFnYjFzu38v2N59k8ZfoFxrRY3J_g%40mail.gmail.com
>>  
>> 
>> .
>>
>>

-- 
You received this message because you are subscribed to the Google Groups 
"neonixie-l" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to neonixie-l+unsubscr...@googlegroups.com.
To view this discussion on the web, visit 
https://groups.google.com/d/msgid/neonixie-l/70f7e525-89c0-41d0-9aab-76219440a9bfn%40googlegroups.com.

[neonixie-l] Re: Reboot of an old clock kit design

[Dekatron42]

Welcome back!

I hope to hear more of your adventures!

Is it you that wrote the code for the "6 Digit Nixie Tube Clock Controller 
Chip"?

/Martin
On Tuesday, 17 May 2022 at 20:17:24 UTC+2 mo...@neonixie.com wrote:

> Hello Everyone!
>
> My name is Moses. This is my first post here on the new *google* 
> neonixie-l list. I used to be on the list when it was on yahoo groups, 20 
> some odd years ago. I never switched over to the google group until now. 
> Like they say, life is what happens when you're busy making other plans. I 
> hope some of my old friends from the list are still here, and I'm sure I'll 
> meet some interesting new ones as well.
>
> A little background on myself. Back in the early 2000s after loosing my 
> job. I'm not exactly sure how or why.. but I ended up traveling to the 
> other side of the world, many times, roaming through dusty old Soviet 
> warehouses looking for nixie tubes. Those stories can go on for days, I'll 
> keep it short for now and tell you it was an incredible adventure!
> I brought those old tubes back here to California and started selling them 
> on ebay. I would eventually make several clock kits using the tubes I had, 
> including a 4 digit IN-17 kit, and 4/6 digit kit with Z57xM tubes. I never 
> made the riches that I had anticipated, but it put food on the table for 
> while and it was fun work. I am the original owner of the domain '
> neonixie.com' and you can see some of my original clock kits there.
>
> Fast forward to now. I've decided to redesign my most popular kit, the 6 
> digit Z57xM kit. You can see the original here:
>
> http://www.allspectrum.com/store/digit-red-filtered-z57xm-nixie-tube-clock-kit-p-130.html
>
> I've kept the size of the board the same as before, but everything else is 
> new. Some features:
> - Controller choices. The board will accommodate an ESP32 or a Pi Zero. 
> I've picked these two boards because of their popularity and the fact that 
> they have wifi. It is so nice not having to set the clock! Wifi and NTP!
> - Modern HV drivers, HV5122/H
> - The tried and true MAX1771 for the HV supply
> - Pinout for optional DHT22 temp/humidity sensor 
> - Pinout for optional BH1750 light level sensor to dim the tubes at night
> - Prototype area for custom sensors/etc.
>
> Pictures here:
> http://neonixie.com/Z57XM6DV2/
>
> The actual pictures are of the first prototype with an ESP32 attached. The 
> 3D rendering is of the second prototype which I am about to order. I 
> believe the second prototype should be very close to the production version.
>
> Now on to the point of this post. Before I order the second prototype, I 
> would like to know what people think of it. 
>
> Comments about the overall design or any specifics, what you like or don't 
> like about it. Any changes or additions you would make?
>
> There is still time for me to make changes.. so if there are any other 
> standard pinouts (like for the light sensor/etc) that I can easily add I 
> will. This was my first real experience with the ESP32 board and it works 
> well in the design along with the Pi Zero which has a big following. 
>
> I appreciate your advice and comments in helping me make this a nice kit!
>
> Thank you!
>
> Regards,
> -Moses
>

-- 
You received this message because you are subscribed to the Google Groups 
"neonixie-l" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to neonixie-l+unsubscr...@googlegroups.com.
To view this discussion on the web, visit 
https://groups.google.com/d/msgid/neonixie-l/bc041c6f-194f-43d5-b3d5-cecde00546b5n%40googlegroups.com.

Re: [neonixie-l] Noon to be dekatron spinner owner

[Dekatron42]

You could mount the regulator & mosfet on the underside of the circuit 
board and perhaps get more space for a heat sink there. Just bend the legs 
upwards and use a spacer between the tab and the circuit board when 
screwing it in place so you don't stress the tab and bend it.

/Martin

On Monday, 25 April 2022 at 02:57:59 UTC+2 Terry Bowman wrote:

>
> On Apr 24, 2022, at 5:25 PM, Aisha Love  wrote:
>
> My interest started with Nixie tubes and expanded from there. I hope to 
> one day have a large collection of unique vintage display devices.
>
>
> Magic eyes. Here are some really inexpensive boards that are a good 
> starting point. They have a 12V jack, 3.5mm audio jack and a power switch out 
> of the way in the back. This first one includes a Chinese EM84:
>
> https://www.ebay.com/itm/193443031569
>
>
> The second is almost identical. It uses three different sockets for three 
> different pinouts: EM80/81, EM800/EM84 or a Soviet 6E5S:
>
> https://www.ebay.com/itm/191011269169
>
>
> The seller has all three sockets. I bought six boards and two sets of 
> sockets. I also scored two or three each of the tubes listed above. The 
> only caveat with these particular boards is that the 6V regulator and the 
> power MOSFET don't have heatsinks and I haven't been able to find any small 
> enough to fit (there's almost no room). The first board has an LM317 and it 
> gets hotter than the LM7806.
>
> The 6E5S really heats things up. My eternal thanks to anyone who can find 
> an affordable TO-220 heatsink that's barely larger than the horizontal TTR 
> itself.
>
>
> My apologies if I've already talked about this before. I'm very happy with 
> what I ended up with and like to share. 8D
>
> I really do need to post this info to my blog but I haven't had time to 
> take pictures and shoot video. Sound familiar?
>
>
> Terry Bowman, KA4HJH
> "The Mac Doctor"
>
> "If only you could see what I've seen with your eyes."—Roy Batty, *Blade 
> Runner*
>
>

-- 
You received this message because you are subscribed to the Google Groups 
"neonixie-l" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to neonixie-l+unsubscr...@googlegroups.com.
To view this discussion on the web, visit 
https://groups.google.com/d/msgid/neonixie-l/656060df-1556-4270-8b10-46fe9a1e23c5n%40googlegroups.com.

[neonixie-l] Re: Need HELP locating an ATMEGA16L chip from 2006 for a NIXIE Clock from MOSES that I built

[Dekatron42]

Could it be this chip?

http://www.allspectrum.com/store/digit-nixie-tube-clock-controller-chip-p-501.html

/Martin

On Thursday, 24 March 2022 at 22:13:05 UTC+1 rnk...@gmail.com wrote:

> In 2006 I bought an ATMEGA16L chip from a man on neonixie.com whose name 
> is Moses from which I built a six digital Nixie tube clock using Burroughs 
> 7971 Nixie tubes.  That chip has finally failed and I desperately need to 
> find another chip.
> If you know Moses or where I can purchade one of the programmed chips I 
> would greatly  appreciate it.  
> The clock uses a 32 khz oscillator and a supercap for  backup power.
>
> Thank You in advance,
> Ralph
> rnk...@gmail.com or rek...@hotmail.com
>

-- 
You received this message because you are subscribed to the Google Groups 
"neonixie-l" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to neonixie-l+unsubscr...@googlegroups.com.
To view this discussion on the web, visit 
https://groups.google.com/d/msgid/neonixie-l/85508fea-bd1e-4cf7-955a-05641fc6b65bn%40googlegroups.com.

[neonixie-l] Re: Nail Head pins

[Dekatron42]

I haven't used that exact type of pins but I tried a similar type and had 
some problems with them when they were subjected to pressure from the side 
which resulted in them coming loose. I had to minimize the hole diameter in 
the circuit board almost to a press-fit size so they couldn't flex/bend but 
then I also got some problems with a few that were pushed up when inserted 
as I guess that there was to little solder fastening them - a proper 
press-fit pin would have been better for my case but I didn't find any that 
fit my needs. It could probably have been done better but I didn't have the 
space nor the time to experiment much more so I decided to go with longer 
pins and two circuit boards on top of each other. I ended up buying cheap 
gilded longer pins without the head from eBay (Chinese seller), similar to 
the ones used in the adapter below.

[image: Tube-pins.jpg]

On Thursday, 10 March 2022 at 06:17:28 UTC+1 Richard Scales wrote:

> Hello everyone.
>
> I want to make a board that plugs in to a tube socket which has minimal 
> height on the 'top' side. 
>
> The image is from a 'Nail Head' pin from Millmax. 
>
> Has anyone used these or anything similar?
>
> - Richard
> [image: NailHead.JPG]
>

-- 
You received this message because you are subscribed to the Google Groups 
"neonixie-l" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to neonixie-l+unsubscr...@googlegroups.com.
To view this discussion on the web, visit 
https://groups.google.com/d/msgid/neonixie-l/af61aaa6-8581-431b-931a-9555c6a0c2afn%40googlegroups.com.

Re: [neonixie-l] Re: Stuck with a stuck dekatron

[Dekatron42]

Have you tried the last circuit in the datasheet above 
(https://static1.squarespace.com/static/5f0983034219c6086e8100ac/t/5f4566168ede3e5edceb395e/1598383652854/439A.pdf)
 
which uses an RC-network on each cathode?

I've not tried this on a 6167 but on some other older types it is necessary 
to get them to run properly and I've also tested it on other types when 
I've had problem (or no data) getting them to run and in some cases I have 
succeeded to get them to run well enough that they later started to run in 
a normal circuit.

/Martin

On Tuesday, 1 March 2022 at 15:26:17 UTC+1 Paolo Cravero wrote:

> Hello.
> I still cannot get these WE6167 spin uniformly. I might have stray 
> capacitances on the breadboard, but I won't invest in a spinner PCB with 
> this huge doubt. I do have some findings and thoughts to share.
>
> The 10 output cathodes can be used to control the glow of each dot since 
> they do illuminate like a Nixie with a 200-230V anode voltage at 1-3 mA. 
> Actually there are eleven cathodes as there is a normal - zero - control. 
> It is cheating, I know, but it will then be able to visually spin 
> counter-clockwise too! Also I will not need 400+ V and the same circuit can 
> control a symbol Nixie. The drawback is that it will need a microcontroller.
>
> While trying all sorts of modifications to the spinner circuit, I noticed 
> that the most stubborn 6167 was made in 1955 (its K10 needs at least 225V 
> to light up in "Nixie mode"!) while the rest were assembled in 1958. In the 
> attached picture you can see how* the 1955 tube in the middle has a 
> shorter rounder dome*. The dirt on the glass is a sticky leftover of a 
> wax paper(?) that wrapped the tubes.
>
> I might look through the glass for construction differences but I stored 
> the 1955's 6167 away since  it is mildly radioactive. On my 
> Geiger-Muller counter sensitive to hard-beta and gamma the 1955's 6167 
> produces a 3x increase in CPM vs background while those from 1958 don't 
> make a difference. Note that *neither the glass bulb nor the box mention 
> the content of radioactive material* (nor the datasheet). Citing myself 
> (Wed, Nov 4, 2020, 1:12 PM to neonixie-l) "*Same goes for other 6140 
> except for one, much older from 12/52 marked 423A. Neither the box nor the 
> glass carry any warning sign, but this tube hits >600 CPM vs 40 CPM 
> background*". Looks like that up to at least 1955 it was not required to 
> declare the content of radioactive material inside vacuum tubes (and that 
> W.E. was pretty generous on the amount used ;) IMVHO ).
>
> Last but not least I forgot I had inserted in my eBay watchlist item 
> #202784117971, a Western Electric burst timer. That's another device that 
> might have been documented online.
>
> Paolo
>
>

-- 
You received this message because you are subscribed to the Google Groups 
"neonixie-l" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to neonixie-l+unsubscr...@googlegroups.com.
To view this discussion on the web, visit 
https://groups.google.com/d/msgid/neonixie-l/abc11d83-6d64-400b-a096-7cf9d406ef35n%40googlegroups.com.

Re: [neonixie-l] Re: Stuck with a stuck dekatron

[Dekatron42]

There's another nice datasheet with a lot of information here: 
https://static1.squarespace.com/static/5f0983034219c6086e8100ac/t/5f4566168ede3e5edceb395e/1598383652854/439A.pdf

@mjrippe: If my mind doesn't play tricks on me I think I got some Telephone 
related patents from you after you mentioned them in this thread where I 
asked for help to get my 6167/WE439A to run: 
https://groups.google.com/g/neonixie-l/c/xn7QcomQZSg

/Martin

On Friday, 25 February 2022 at 18:08:14 UTC+1 mjrippe wrote:

> >I wish we knew which device used W.E. 6167 dekatrons so that we could 
> have a look at the diagram...
>
> Hi Paolo,
>
> I did some research on these tubes about a decade ago.  There was not much 
> info available, perhaps more to be found now.  Here is the one use case I 
> did find - good luck finding out more!
>
> From AAFM Vol. 6, No. 1  March, 1998  (Association of Air Force Missileers)
>
> Origin of the Ground Guidance System The Titan I
> guidance system was developed by Bell Telephone Laboratories
> (BTL). It started as a WW II shipboard radar,
> built by Western Electric Company, and grew to include
> an analog guidance computer for guiding early experimental
> rockets and the Nike-series missiles. The analog
> computer used two large motor-driven oil-filled sinecosine
> potentiometers and lots of op amps to generate
> the guidance equation. A bank of ten turn
> potentiometers provided variables to the guidance
> equation, so that roll-over and changes in acceleration
> could be programmed. The whole thing was sequenced
> by some little Western Electric 6167 ten-step pixie tubes.
> It used electron tubes, for this was before the proliferation
> of the transistor, and mean time between failures was
> acceptable for that era, but short.
>
>
> Yours,
> Mike
>
> On Thursday, February 24, 2022 at 6:58:00 AM UTC-5 Paolo Cravero wrote:
>
>> On Wed, Feb 23, 2022 at 11:04 PM Jon  wrote:
>>
>> Thanks to Martin, Eric and Jon for their answers.
>>
>> However, if I understand Paolo's post, he's using Mike Moorrees's circuit 
>>> (https://threeneurons.files.wordpress.com/2011/09/we6167ckt.gif) which 
>>> leaves the auxiliary anode disconnected. When I ran 6167s in this 
>>> configuration they were generally much more reliable in not sticking on 
>>> K10, though I was using rather different circuit conditions:
>>>
>>>- Va = +400V with respect to main cathodes
>>>- Transfer pulses 60V amplitude from a resting bias +30V with 
>>>respect to main cathodes
>>>- Anode current 1.3mA
>>>
>>>
>>> Paolo, can you confirm you have indeed left pin 5 unconnected? 
>>>
>>
>> Yes, I confirm I used that circuit from A to Z. Then I varied the bias 
>> voltage and/or anode current (up to 1.5 mA), but both auxiliary anode and 
>> reset were floating. 
>>
>> I will rebuild the test setup with an external power supply that can 
>> provide more current, as the LM393 booster is struggling with 2 mA at 400+ 
>> V, and use zeners to derive the bias. According to Jon's list, a starting 
>> point for voltages should be:
>>
>>- main cathodes +30V,
>>- transfer pulses from +60V to 0V,
>>- main anode at +430V;
>>- K10 current at 2mA which brings
>>- auxiliary anode at +115V (datasheet PDF, 4th page)
>>
>> I wish we knew which device used W.E. 6167 dekatrons so that we could 
>> have a look at the diagram...
>> Paolo
>>
>>

-- 
You received this message because you are subscribed to the Google Groups 
"neonixie-l" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to neonixie-l+unsubscr...@googlegroups.com.
To view this discussion on the web, visit 
https://groups.google.com/d/msgid/neonixie-l/ba9e2178-133d-4456-b83f-a07effbbfba7n%40googlegroups.com.

Re: [neonixie-l] Re: Stuck with a stuck dekatron

[Dekatron42]

I forgot to mention that when I am "un-sticking" a Dekatron I just connect 
all cathodes together so they don't have differing potentials, with or 
without one common cathode resistor for all cathodes.

/Martin

On Wednesday, 23 February 2022 at 23:56:50 UTC+1 Tidak Ada wrote:

> Thanks John, that is useful information!
> Yes, you confirm my fear. Fortunately I bought the tube as am collecting 
> item,
>  Eric
>
> Verstuurd vanaf mijn iPhone
>
> Op 23 feb. 2022 om 23:21 heeft Jon  het volgende 
> geschreven:
>
> To Eric's question on the N3...
>
>
> These are also rather tricky tubes. My experience is similar to Martin's - 
> unfortunately many examples of N3 are non-functional in that they won't 
> even strike a glow - outgassed or similar. I fear that if you can't raise a 
> glow with a violet ray unit or plasma globe then yours may be dead :(
>
> But if you do find a working N3 or N4, then the conditions below work for 
> me:
>
>- Va = +350V with respect to main cathodes
>- Transfer pulses 30V amplitude from a resting bias +15V with respect 
>to main cathodes
>- Anode current 1.6mA (82K anode resistor, 8K2 cathode resistors)
>
> It's quite an unusual design with relatively low anode and transfer 
> electrode voltages. If the anode voltage or current is too high, it's easy 
> to get multiple cathodes glowing instead of just one which can mess up the 
> stepping.
>
> Jon.
>
>
> On Wednesday, February 23, 2022 at 10:04:53 PM UTC Jon wrote:
>
>> The sticking on K10 specifically is a peculiarity of the 6167 in my 
>> experience. I believe it's distinct from the sleeping sickness effect that 
>> Martin describes as that is essentially random in which cathodes are 
>> affected (and as he says, working the tube, possibly at elevated current, 
>> in both directions where possible, is usually an effective cure).
>>
>> I mostly saw K10 sticking when I was exploring a circuit that makes use 
>> of the unique auxiliary anode connection (pin 5) which of course lies 
>> adjacent to K10. What seems to be happening was that when the glow gets to 
>> K10 there is current flow from both the main anode and auxiliary anode. The 
>> next transfer pulse moves the glow onto the transfer electrode, but when it 
>> terminates the auxiliary anode-K10 gap is still sufficiently primed so that 
>> the glow mostly steps back to K10 rather than forward to K1. I was able to 
>> mitigate this by reducing the auxiliary anode potential below what I'd 
>> originally understood it needed to be from the datasheet (the datasheet is 
>> really opaque on this point), and also by lengthening the transfer pulse to 
>> allow more deionisation time.
>>
>> However, if I understand Paolo's post, he's using Mike Moorrees's circuit 
>> (https://threeneurons.files.wordpress.com/2011/09/we6167ckt.gif) which 
>> leaves the auxiliary anode disconnected. When I ran 6167s in this 
>> configuration they were generally much more reliable in not sticking on 
>> K10, though I was using rather different circuit conditions:
>>
>>- Va = +400V with respect to main cathodes
>>- Transfer pulses 60V amplitude from a resting bias +30V with respect 
>>to main cathodes
>>- Anode current 1.3mA
>>
>>
>> Paolo, can you confirm you have indeed left pin 5 unconnected? If so, 
>> given that the sticking effect seems to be increasing with tube use, I 
>> wonder if we're seeing the floating auxiliary anode gradually charging up 
>> and eventually reaching a potential which is disrupting the stepping 
>> operation. Maybe use a potentiometer or potential divider to pin the 
>> auxiliary anode at some moderate voltage positive to the main cathodes (say 
>> +100V as a starting point) and see if that helps?
>>
>> They're funky tubes...
>>
>> Jon.
>>
>>
>> On Wednesday, February 23, 2022 at 8:37:58 AM UTC Paolo Cravero wrote:
>>
>>> Hello.
>>> I am stuck with a stubborn WE-6167 dekatron (
>>> http://www.tube-tester.com/sites/nixie/dat_arch/6167.pdf seems to be 
>>> the only document available).
>>>
>>> The tube is NIB made in 1958. I understand it is a single guide 
>>> dekatron, and the stepping cathodes are split in two groups 1-5 and 6-10.
>>>
>>> I built the circuit as per Mike's diagram (
>>> http://www.tube-tester.com/sites/nixie/dat_arch/6167.pdf) and it span 
>>> correctly. I let it run for few minutes and then it got stuck at K10. 
>>> Through the glass I can see that it attempts to jump ahead, but the main 
>>> glow stays on K10. Fiddling with wires I could get it have one round up to 
>>> K10. The more it runs the more it gets stickier. The relaxation oscillator 
>>> never stops.
>>>
>>> I suspected some resistor overheating or changing value, but even after 
>>> hours of power-off, it doesn't go beyond K10. Or it simply powers up at K10 
>>> and doesn't step over, while it does visually try to jump.
>>>
>>> Voltages are 450V/225V (input at 12V is 220 mA). Anode current is 1 mA 
>>> (I increased the anode resistor to 250k) while the 

Re: [neonixie-l] Re: Stuck with a stuck dekatron

[Dekatron42]

Regarding the Pressler N3, I hope you have seen the datasheet here: 
http://lampes-et-tubes.info/cd/N3.pdf

Out of the bunch that I own of these only a few are running (and maybe half 
are out-gassed and some have mechanical faults like loose welds and pins 
rumbling around inside the envelope) with the original circuit.

/Martin



On Wednesday, 23 February 2022 at 12:04:19 UTC+1 Tidak Ada wrote:

> Hi all,
>
>  
>
>  
>
> Unfortunately no further info here.
>
> A guess is it a kind of cathode poisoning??
>
>  
>
> Did you already contact the *TCA* [ tubecollecto...@groups.io ]. They are 
> based in the USA, so the chance is greater there is info to find.
>
>  
>
> I have the same problem with a rare Pressler N3 dekatron. Anybody her who 
> can help me on data and applications?
>
> The Pressler N3 is a WW-II tube with a 8 pin ‘German Stahlrohren’ base.
>
> I have no data and therefore no clue how to drive the tube.
>
> Trying to light up the tube with a blue-ray machine did not work
>
>  
>
> Cheers,
>
> Eric
>
>  
>
> *Van:* neoni...@googlegroups.com [mailto:neoni...@googlegroups.com] *Namens 
> *Dekatron42
> *Verzonden:* woensdag 23 februari 2022 10:09
> *Aan:* neonixie-l
> *Onderwerp:* [neonixie-l] Re: Stuck with a stuck dekatron
>
>  
>

-- 
You received this message because you are subscribed to the Google Groups 
"neonixie-l" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to neonixie-l+unsubscr...@googlegroups.com.
To view this discussion on the web, visit 
https://groups.google.com/d/msgid/neonixie-l/ec4d3629-f38a-4fcc-9ffd-3044de6fa6a3n%40googlegroups.com.

[neonixie-l] Re: Stuck with a stuck dekatron

[Dekatron42]

I see this a lot in some Dekatron types/brands that have been stored for a 
long time, some brands have fared better while being stored compared to 
others and some very´seldom experience this problem. I usually just 
increase the current either by raising the Anode voltage or decreasing the 
Anode resistor and then let them sit for a few hours up to a day or so and 
they usually start to run again past the sticky point. In those that you 
can reverse the rotation I sometimes switch the direction back and forth so 
I know that they run well in both directions.

/Martin

On Wednesday, 23 February 2022 at 09:37:58 UTC+1 Paolo Cravero wrote:

> Hello.
> I am stuck with a stubborn WE-6167 dekatron (
> http://www.tube-tester.com/sites/nixie/dat_arch/6167.pdf seems to be the 
> only document available).
>
> The tube is NIB made in 1958. I understand it is a single guide dekatron, 
> and the stepping cathodes are split in two groups 1-5 and 6-10.
>
> I built the circuit as per Mike's diagram (
> http://www.tube-tester.com/sites/nixie/dat_arch/6167.pdf) and it span 
> correctly. I let it run for few minutes and then it got stuck at K10. 
> Through the glass I can see that it attempts to jump ahead, but the main 
> glow stays on K10. Fiddling with wires I could get it have one round up to 
> K10. The more it runs the more it gets stickier. The relaxation oscillator 
> never stops.
>
> I suspected some resistor overheating or changing value, but even after 
> hours of power-off, it doesn't go beyond K10. Or it simply powers up at K10 
> and doesn't step over, while it does visually try to jump.
>
> Voltages are 450V/225V (input at 12V is 220 mA). Anode current is 1 mA (I 
> increased the anode resistor to 250k) while the current coming out of the 
> active cathode(s) is 1.5 mA. Stepping goes from 200V down to 2V (green 
> trace). Anode voltage (450 V) doesn't sag noticeably and inductor+IRF get 
> barely warm. The yellow trace in the oscilloscope shot is  measured at the 
> "+58V" point (yes, I did try to move that voltage up and down with no 
> difference).
>
>
> Then I opened a second new in box WE-6167. It ran correctly for a minute, 
> perhaps 100 rounds, then it started hiccupping (I think between K5 and K6) 
> and finally got stuck on K10 with the flicker towards the stepping cathode.
>
> It must be something with these tubes. Does anyone remember a similar 
> behaviour in never used dekatrons? I've read of deks needing a high current 
> "preparation", but not of them failing after a good start. I would like to 
> get out of the K10 position!
>
> Thanks,
> Paolo
>
>

-- 
You received this message because you are subscribed to the Google Groups 
"neonixie-l" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to neonixie-l+unsubscr...@googlegroups.com.
To view this discussion on the web, visit 
https://groups.google.com/d/msgid/neonixie-l/34adcb73-2abb-4bc5-bfe6-08d9d192b142n%40googlegroups.com.

[neonixie-l] Re: Info on IN-3B lamps

[Dekatron42]

This Russian website has a little information on them but even there they 
are not sure of their manufacture and data - they are used in Christmas 
lighting and also some photo lamps.

https://old-lighting.ru/ru/content/3b-1-gazotron

some more items using them:

https://old-lighting.ru/ru/exposition/3230/exponat_luminaire

/Martin

On Wednesday, 16 February 2022 at 20:09:59 UTC+1 andrea@gmail.com wrote:

> Hello everyone,
>
> I just bought a few of these IN-3B lamps (not the regular IN-3, these are 
> much longer, see the pictures).
>
> The problem is that I searched left and right and I couldn't find any info 
> on them, at all. They don't even have any marking on the glass bulb.
>
> Does anyone have any info on them or, even better, a datasheet? In the 
> pictures I was running them at around 1.5mA, but I have no idea whether 
> this is an acceptable figure for these lamps.
>
> The blue "haze" in the glass is a camera artifact. In person they have the 
> regular neon orange color.
>
> Regards,
>
> Andrea
>
> [image: 20220216_193152_small.jpg]
> [image: 20220216_193522_small.jpg]
>

-- 
You received this message because you are subscribed to the Google Groups 
"neonixie-l" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to neonixie-l+unsubscr...@googlegroups.com.
To view this discussion on the web, visit 
https://groups.google.com/d/msgid/neonixie-l/0f73b486-6349-4f6d-ac32-109e465d7bbbn%40googlegroups.com.

Re: [neonixie-l] A pair of Rodan Okaya CD47 / GR414 on eBay (used with green corrosion on one pin).....

[Dekatron42]

That site is legitimate and I've had help from people in Germany to buy 
from it as it is local to Germany (sadly all my contacts have moved from 
Germany now during the Covid Pandemic) - as with all sites where people can 
offer items for sale you will have to take all measures you can to protect 
yourself. I can't say if this site has more problems than other sites but 
people tend not to accept Paypal on ebay-kleinanzeigen when I've asked. I 
have made some good buys there and never been cheated but refrained from 
buying some items when people have felt a bit shady and not accepted Paypal.

Best is to get a local person to help you out with the buying and also have 
them collect the items in person.

/Martin

On Monday, 14 February 2022 at 12:49:24 UTC+1 Bill Notfaded wrote:

> The eBay website doesn't look like normal eBay.de has anyone heard of this 
> auction site before?
>
> Bill
>
> On Mon, Feb 14, 2022, 4:38 AM Dekatron42  wrote:
>
>> The photos used in the eBay auction I started this thread with are 
>> identical to the photos use in this "ebay-kleinanzeigen" listing (even the 
>> serial numbers on the Nixies as well as the green corrosion on one pin) - 
>> maybe the buyer just realized he didn't need them or they weren't as he 
>> expected them to be and just wants to sell them, I don't know.
>>
>> /Martin
>>
>> On Monday, 14 February 2022 at 12:13:51 UTC+1 Bill Notfaded wrote:
>>
>>> I don't know what this other eBay is all about?
>>>
>>> Bill
>>>
>>> On Mon, Feb 14, 2022, 2:14 AM Audrey  wrote:
>>>
>>>> I saw that, i think it's a scam.
>>>>
>>>> On Mon, Feb 14, 2022, 4:11 AM 'Bogdan Paduraru' via neonixie-l <
>>>> neoni...@googlegroups.com> wrote:
>>>>
>>>>> apparently these Rodans appeared for sale on local DEU 
>>>>>
>>>>>
>>>>> https://www.ebay-kleinanzeigen.de/s-anzeige/2x-rodan-okaya-cd47-gr414-riesige-nixie-raritaet/2021805800-168-4863
>>>>>
>>>>> On Wednesday, December 15, 2021 at 8:11:44 PM UTC+2 tntm...@gmail.com 
>>>>> wrote:
>>>>>
>>>>>> It makes sense considering they are from japanese and were most 
>>>>>> likely special use (displays for trains, weigh stations, etc...)
>>>>>> I wonder if there's a japanese neonixie we just dont know about...
>>>>>>
>>>>>> On Wed, Dec 15, 2021, 7:40 AM Bill Notfaded  
>>>>>> wrote:
>>>>>>
>>>>>>> This is why I still buy tubes that I can find... there never will 
>>>>>>> ever be anymore so what's out there is it.  Most recently I bought a 
>>>>>>> bunch 
>>>>>>> more B-5971's.  I missed out on these CD47's... it's one tube I don't 
>>>>>>> have 
>>>>>>> and I just love what Paul Andrews did with his!!!  I'd like to have at 
>>>>>>> least one.  It's seems, from I've seen, all Rodan tubes in general are 
>>>>>>> really hard to find.
>>>>>>>
>>>>>>> Bill
>>>>>>>
>>>>>>> On Wednesday, November 24, 2021 at 7:40:45 AM UTC-7 Robert G. 
>>>>>>> Schaffrath wrote:
>>>>>>>
>>>>>>>> Which is why I am sitting on my NOS B7971 tubes. Someday I think my 
>>>>>>>> heirs will be pleasantly surprised at the value of the bubble wrapped 
>>>>>>>> tubes 
>>>>>>>> in the carton they are stored in. I already have a note in the box to 
>>>>>>>> the 
>>>>>>>> attention of whomever to do research before they just toss them out 
>>>>>>>> and 
>>>>>>>> some recent eBay auction printouts.
>>>>>>>>
>>>>>>>> On Monday, November 22, 2021 at 2:54:20 PM UTC-5 LB wrote:
>>>>>>>>
>>>>>>>>> Who knows, they might be the ones laughing in 5 years when a 
>>>>>>>>> single tube goes for $10,000 
>>>>>>>>>
>>>>>>>> -- 
>>>>>>>
>>>>>> You received this message because you are subscribed to the Google 
>>>>>>> Groups "neonixie-l" group.
>>>>>>> To unsubscribe from this group and stop receiving emails from it, 
>>>>>>> send an email to neonixie-l+...@googlegroups.com.
>>>

Re: [neonixie-l] A pair of Rodan Okaya CD47 / GR414 on eBay (used with green corrosion on one pin).....

[Dekatron42]

The photos used in the eBay auction I started this thread with are 
identical to the photos use in this "ebay-kleinanzeigen" listing (even the 
serial numbers on the Nixies as well as the green corrosion on one pin) - 
maybe the buyer just realized he didn't need them or they weren't as he 
expected them to be and just wants to sell them, I don't know.

/Martin

On Monday, 14 February 2022 at 12:13:51 UTC+1 Bill Notfaded wrote:

> I don't know what this other eBay is all about?
>
> Bill
>
> On Mon, Feb 14, 2022, 2:14 AM Audrey  wrote:
>
>> I saw that, i think it's a scam.
>>
>> On Mon, Feb 14, 2022, 4:11 AM 'Bogdan Paduraru' via neonixie-l <
>> neoni...@googlegroups.com> wrote:
>>
>>> apparently these Rodans appeared for sale on local DEU 
>>>
>>>
>>> https://www.ebay-kleinanzeigen.de/s-anzeige/2x-rodan-okaya-cd47-gr414-riesige-nixie-raritaet/2021805800-168-4863
>>>
>>> On Wednesday, December 15, 2021 at 8:11:44 PM UTC+2 tntm...@gmail.com 
>>> wrote:
>>>
 It makes sense considering they are from japanese and were most likely 
 special use (displays for trains, weigh stations, etc...)
 I wonder if there's a japanese neonixie we just dont know about...

 On Wed, Dec 15, 2021, 7:40 AM Bill Notfaded  wrote:

> This is why I still buy tubes that I can find... there never will ever 
> be anymore so what's out there is it.  Most recently I bought a bunch 
> more 
> B-5971's.  I missed out on these CD47's... it's one tube I don't have and 
> I 
> just love what Paul Andrews did with his!!!  I'd like to have at least 
> one.  It's seems, from I've seen, all Rodan tubes in general are really 
> hard to find.
>
> Bill
>
> On Wednesday, November 24, 2021 at 7:40:45 AM UTC-7 Robert G. 
> Schaffrath wrote:
>
>> Which is why I am sitting on my NOS B7971 tubes. Someday I think my 
>> heirs will be pleasantly surprised at the value of the bubble wrapped 
>> tubes 
>> in the carton they are stored in. I already have a note in the box to 
>> the 
>> attention of whomever to do research before they just toss them out and 
>> some recent eBay auction printouts.
>>
>> On Monday, November 22, 2021 at 2:54:20 PM UTC-5 LB wrote:
>>
>>> Who knows, they might be the ones laughing in 5 years when a single 
>>> tube goes for $10,000 
>>>
>> -- 
>
 You received this message because you are subscribed to the Google 
> Groups "neonixie-l" group.
> To unsubscribe from this group and stop receiving emails from it, send 
> an email to neonixie-l+...@googlegroups.com.
>
 To view this discussion on the web, visit 
> https://groups.google.com/d/msgid/neonixie-l/611e57f1-27cb-4054-b6e6-4caae3259378n%40googlegroups.com
>  
> 
> .
>
 -- 
>>> You received this message because you are subscribed to the Google 
>>> Groups "neonixie-l" group.
>>> To unsubscribe from this group and stop receiving emails from it, send 
>>> an email to neonixie-l+...@googlegroups.com.
>>> To view this discussion on the web, visit 
>>> https://groups.google.com/d/msgid/neonixie-l/f2ea8a50-3187-4c49-9762-152437ba81aan%40googlegroups.com
>>>  
>>> 
>>> .
>>>
>> -- 
>>
> You received this message because you are subscribed to a topic in the 
>> Google Groups "neonixie-l" group.
>> To unsubscribe from this topic, visit 
>> https://groups.google.com/d/topic/neonixie-l/TQt_FeOnwN0/unsubscribe.
>> To unsubscribe from this group and all its topics, send an email to 
>> neonixie-l+...@googlegroups.com.
>> To view this discussion on the web, visit 
>> https://groups.google.com/d/msgid/neonixie-l/CAPDJQ6A3o%3DbDAHx5_p0ZyNLF0bfx%2BfTpQ7R7aNj3nsse3Y%2BeYw%40mail.gmail.com
>>  
>> 
>> .
>>
>

-- 
You received this message because you are subscribed to the Google Groups 
"neonixie-l" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to neonixie-l+unsubscr...@googlegroups.com.
To view this discussion on the web, visit 
https://groups.google.com/d/msgid/neonixie-l/96b60429-b104-4df7-83fb-1edfa43d606cn%40googlegroups.com.

[neonixie-l] Re: Shock hazard - Mr. Nixie ITS-1A clock

[Dekatron42]

Would it be possible to replace the trimmers with Bourns 3362, 3386 or 
similar encapsulated types? Bourns also have white and grey types apart 
from the usual blue models.

/Martin

On Friday, 28 January 2022 at 05:10:27 UTC+1 Terry S wrote:

>  Is this printing on a PCB? Not clear from your photos.
>
> It seems unlikely that ink used on a PCB would be conductive. 
>
>
> On Thursday, January 27, 2022 at 2:52:25 PM UTC-6 Robert L wrote:
>
>> Hi folks,
>>
>> A friend received a rather nasty shock from one of his Mr. Nixie ITS-1A 
>> clocks... To add insult to injury, he dropped the clock when shocked and 
>> two tubes were broken.
>>
>> I've repaired his clock and, in the process, identified and mitigated the 
>> shock hazard. Note that I am not connected with Mr. Nixie. I'm simply 
>> trying to help others avoid this nasty experience.
>>
>> Here's what I found...
>>
>> 1) The black bottom case cover with  labels for "SET", "ADJ" and "ALM" is 
>> likely printed using a carbon black based ink... Whatever the ink used, 
>> it's conductive.
>>
>> 2) There are 6 trim pots on the tube carrier assembly used to 
>> individually adjust -270V supplied to each of the six tubes. Tabs on the 
>> trim pots are directly over the conductive black printed base plate.
>>
>> The trim pot mounting tabs on my friends clock had come into contact with 
>> the conductive printed label. My friend touched the label and a grounded 
>> piece of the clock and was rewarded with the rather nasty shock.
>>
>> The photos below show the mitigation I used on my friends clocks.
>>
>> The mitigation is to assure that the trim pot tabs do not contact the 
>> black label plate. I added a triple thickness of Kapton tape between the 
>> trim pots and the label plate on his clocks. This may not be the best 
>> possible solution, but it's a starting place. I leave it to each of you to 
>> find a mitigation that you feel is safe. 
>>
>> I urge you to check your ITS-1A clock for this hazard and mitigate as you 
>> see fit. 
>>
>> I used a DVM to measure the voltage with one probe to the supply ground 
>> and the second probe touching the black printed label. I could also measure 
>> resistance between these two points with the clock unplugged. There should 
>> be an open circuit between these points -  no voltage / open circuit 
>> between these points.
>>
>> A visual check will let you see if there's clearance between the trim 
>> pots and the label plate. I strongly recommend that you mitigate the hazard 
>> - clearance or not. At a minimum, I think that you want a non-conductive 
>> barrier between the trim pot tabs and the conductive  label.
>>
>> Trim pot tabs are very close to the conductive label plate on the clock 
>> shown below... tabs were touching on the clock that shocked my friend::
>>
>> [image: PXL_20220127_175801532.jpg]
>>
>> This is the clock that shocked my friend. The photo shows a triple 
>> thickness of Kapton tape separating all of the trim pot tabs from the label 
>> plate. Tape is held in place by adhesive backing and is also trapped 
>> between the tube carrier and label plate:
>>
>> [image: PXL_20220127_180629685.jpg]
>>
>> This hazard and a possible mitigation posted here in the hope that it 
>> prevents others from receiving a nasty surprise!
>>
>> All best regards,
>> Bob
>>
>>
>>

-- 
You received this message because you are subscribed to the Google Groups 
"neonixie-l" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to neonixie-l+unsubscr...@googlegroups.com.
To view this discussion on the web, visit 
https://groups.google.com/d/msgid/neonixie-l/6e7b2822-f2a3-4aaa-942c-3e3535e9a9b4n%40googlegroups.com.

Re: [neonixie-l] Is it just me?

[Dekatron42]

To me it also seems that there are more people that have the funds to spend 
which also drives the greed of the sellers, it's not just greed I mean.

/Martin

On Sunday, 23 January 2022 at 19:43:46 UTC+1 Pramanicin wrote:

> Bill, times have certainly changed for obvious reasons. There is the 
> occasional 'bargain' to be had for those that pay close attention to eBay 
> etc, but gone are the days of yore. I'm sure there are a number of list 
> members sitting on 'hoards' that may let things sell here and there, but 
> inflationary greed being what it is, prices are only going up. My interests 
> veered away from nixies to other vintage display devices for exactly that 
> reason and prices are still reasonable for CRT's, dekatrons etc. How long 
> that stays true is anyone's guess, but the trajectory will be the same I 
> guess...
>
> Cheers,
>
> Nick
>
> Sent from my iPhone
>
> On Jan 23, 2022, at 09:51, Audrey  wrote:
>
> 
>
> I'm new so I dont know what it used to be like, but it seems like 
> wonderful things come along every once in a while, 3 CD-47s have sold 
> recently, a CD-27, that b7971 clock you purchased, some pandicons, a pair 
> of GR10Gs
>
> On Sun, Jan 23, 2022, 12:44 PM Bill Notfaded  wrote:
>
>> Is it just me or does it almost seem like most of the great tubes for 
>> sale are almost a thing of the past now?
>>
>> Maybe I'm a little overboard but it wasn't that long ago that the were 
>> still some good items to be had even if for a premium price.  I almost feel 
>> like the best of days are behind us now and it's only few and far between 
>> when we see something really great on the market.
>>
>> Perhaps for some of us collectors we now sit on a gold mine because... We 
>> have things that have gone and will never be again.  I'm just happy to say 
>> I'm really glad I've been able to share some of this with you and have been 
>> a part of it.  I owe a lot to many here that came before me.  Thank God for 
>> Dalibor and others that carry the love forward!  The future is now for neon 
>> nixie.  God bless you and let the new become the future.
>>
>> Best Regards,
>>
>> Bill
>>
>> -- 
>> You received this message because you are subscribed to the Google Groups 
>> "neonixie-l" group.
>> To unsubscribe from this group and stop receiving emails from it, send an 
>> email to neonixie-l+...@googlegroups.com.
>> To view this discussion on the web, visit 
>> https://groups.google.com/d/msgid/neonixie-l/ae5486db-556b-49fc-af2f-e79f3adf6ee4n%40googlegroups.com
>>  
>> 
>> .
>>
> -- 
> You received this message because you are subscribed to the Google Groups 
> "neonixie-l" group.
> To unsubscribe from this group and stop receiving emails from it, send an 
> email to neonixie-l+...@googlegroups.com.
>
> To view this discussion on the web, visit 
> https://groups.google.com/d/msgid/neonixie-l/CAPDJQ6DveYPOuRPs2T6n25AGD_XQ94A12Xj0HWKkVyARRRhk2A%40mail.gmail.com
>  
> 
> .
>
>

-- 
You received this message because you are subscribed to the Google Groups 
"neonixie-l" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to neonixie-l+unsubscr...@googlegroups.com.
To view this discussion on the web, visit 
https://groups.google.com/d/msgid/neonixie-l/e2ec1c21-3787-4b7f-81d8-6d4da2873c6en%40googlegroups.com.

[neonixie-l] OT: Not a Nixie but a very nice and rare tube, a Selectron memory tube!

[Dekatron42]

Just fund this on eBay: https://www.ebay.com/itm/174977901251 a Selectron 
memory tube, perhaps someone here has the money to buy it and add it to 
their collection?

/Martin

-- 
You received this message because you are subscribed to the Google Groups 
"neonixie-l" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to neonixie-l+unsubscr...@googlegroups.com.
To view this discussion on the web, visit 
https://groups.google.com/d/msgid/neonixie-l/68468b49-82c3-4fe5-b268-948476626260n%40googlegroups.com.

[neonixie-l] Where to get PCBs from, some companies blocked by PayPal and credit card issuers......

[Dekatron42]

Hi,

Recently I've been unable to buy circuit boards that I've designed myself 
from the PCB manufacturing companies in China that I regularly use as I was 
told by my credit card issuer that PayPal and MasterCard have 
blocked/banned these companies due to involvement in crypto currency scams 
and sale of crypto currency mining equipment. I can't even pay with PayPal 
to email addresses registered by these companies nor those registered by 
people involved with these companies, they have all been blocked by PayPal 
I was told. It took me some time to find this out and I am not sure that my 
credit card issuer was allowed to give me this much information as they 
have declined to answer any of my followup questions.

I was mainly using some Chinese companies as they were quite cheap at just 
USD $4.90 for 10 PCBs up to 100mm by 100mm plus shipping and they have 
always had good quality no matter what strangely looking circuit boards 
that I made, even with complicated outlines and holes and up to 2 layers, 
just a tad bit more expensive for 4 layers. The price has been a big factor 
for me when making prototypes, sometimes just ordering the PCBs to see how 
they fit in the enclosure they were intended for, without actually 
soldering any components, just trying them out for space.

Are there any other companies out there that have similarly low prices, I 
tried PCBWAY and OSHPARK with a small 2 layer circuit board just 71mm by 
82mm and they were asking 10 times the cost and would only supply 1 or 3 
circuit boards for that price plus the shipping cost was 4-5 times as 
expensive.

So, what cheap, but still acceptable quality, PCB manufacturers do you use?

/Martin

-- 
You received this message because you are subscribed to the Google Groups 
"neonixie-l" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to neonixie-l+unsubscr...@googlegroups.com.
To view this discussion on the web, visit 
https://groups.google.com/d/msgid/neonixie-l/ad937e69-96ca-47b2-b28e-940d043a320dn%40googlegroups.com.

Re: [neonixie-l] A pair of Rodan Okaya CD47 / GR414 on eBay (used with green corrosion on one pin).....

[Dekatron42]

Yet another one from the same seller: 
https://www.ebay.com/itm/353780905444?hash=item525efc35e4:g:UD4AAOSwQMVhnOg1

/Martin

On Tuesday, 23 November 2021 at 02:52:48 UTC+1 gregebert wrote:

> I would much rather have some of Dalibor's H-tubes.
>
> On Monday, November 22, 2021 at 11:57:25 AM UTC-8 tntm...@gmail.com wrote:
>
>> That's absolutely true...
>>
>> On Mon, Nov 22, 2021, 2:54 PM liam bartosiewicz  
>> wrote:
>>
>>> Who knows, they might be the ones laughing in 5 years when a single tube 
>>> goes for $10,000 
>>>
>>> On Nov 22, 2021, at 11:01 AM, Audrey  wrote:
>>>
>>> 
>>> Sounds like the guy who spent 3500 euros on an untested one was just 
>>> stupid
>>>
>>> On Mon, Nov 22, 2021, 1:56 PM gregebert  wrote:
>>>
>>>> Fugly or not, someone coughed-up more than 2300 Euros for the pair.
>>>>
>>>> On Friday, November 19, 2021 at 8:02:17 AM UTC-8 Paul Andrews wrote:
>>>>
>>>>> I have one that has been running for a couple of years now (maybe 6 
>>>>> hours a day). It doesn't show any signs of any issues. Not sure about the 
>>>>> glass thickness - I would assume it is the same as other tubes.
>>>>>
>>>>> On Thursday, November 18, 2021 at 10:47:03 AM UTC-5 gregebert wrote:
>>>>>
>>>>>> For the lucky few who have one or more of these enormous beasts, have 
>>>>>> you seen any hint of degradation or leakage ? I've always wondered if 
>>>>>> there 
>>>>>> were manufacturing challenges due to the size.
>>>>>>
>>>>>> Also, is the glass thicker than typical nixies ?
>>>>>>
>>>>>> On Wednesday, November 17, 2021 at 6:08:19 PM UTC-8 tntm...@gmail.com 
>>>>>> wrote:
>>>>>>
>>>>>>> IMO they dont look too bad, theyre called working
>>>>>>>
>>>>>>> On Wed, Nov 17, 2021, 9:06 PM Terry S  wrote:
>>>>>>>
>>>>>>>> Fugly is in the eye of the beholder.
>>>>>>>>
>>>>>>>> On Wednesday, November 17, 2021 at 1:49:18 PM UTC-6 Pramanicin 
>>>>>>>> wrote:
>>>>>>>>
>>>>>>>>> Again, fugly tubes...
>>>>>>>>>
>>>>>>>>> :)
>>>>>>>>>
>>>>>>>>> On Wed, Nov 17, 2021 at 11:03 AM Dekatron42  
>>>>>>>>> wrote:
>>>>>>>>>
>>>>>>>>>> Just spotted these: https://www.ebay.com/itm/353770528495 used 
>>>>>>>>>> with green corrosion on at least one pin.
>>>>>>>>>>
>>>>>>>>>> /Martin
>>>>>>>>>>
>>>>>>>>>> -- 
>>>>>>>>>> You received this message because you are subscribed to the 
>>>>>>>>>> Google Groups "neonixie-l" group.
>>>>>>>>>> To unsubscribe from this group and stop receiving emails from it, 
>>>>>>>>>> send an email to neonixie-l+...@googlegroups.com.
>>>>>>>>>> To view this discussion on the web, visit 
>>>>>>>>>> https://groups.google.com/d/msgid/neonixie-l/967d5733-c1c0-40f6-b7e5-2450bfdbf40cn%40googlegroups.com
>>>>>>>>>>  
>>>>>>>>>> <https://groups.google.com/d/msgid/neonixie-l/967d5733-c1c0-40f6-b7e5-2450bfdbf40cn%40googlegroups.com?utm_medium=email_source=footer>
>>>>>>>>>> .
>>>>>>>>>>
>>>>>>>>> -- 
>>>>>>>> You received this message because you are subscribed to the Google 
>>>>>>>> Groups "neonixie-l" group.
>>>>>>>> To unsubscribe from this group and stop receiving emails from it, 
>>>>>>>> send an email to neonixie-l+...@googlegroups.com.
>>>>>>>>
>>>>>>> To view this discussion on the web, visit 
>>>>>>>> https://groups.google.com/d/msgid/neonixie-l/83e6fab5-8626-49e7-99c8-5ff11951c87dn%40googlegroups.com
>>>>>>>>  
>>>>>>>> <https://groups.google.com/d/msgid/neonixie-l/83e6fab5-8626-49e7-99c8-5ff11951c87dn%40googlegroups.com?utm_medium=email_sou

Re: [neonixie-l] Japanese Nixie Watch

[Dekatron42]

In what way are IN-16's flaky? Short life span (no mercury?), prone to 
shorts and/or cathode poisoning or what?

I've been thinking of using them but never got around to it.

/Martin

On Friday, 19 November 2021 at 23:08:51 UTC+1 Pramanicin wrote:

> IN16's are some of the flakiest nixies I've worked with. Putting them in a 
> watch seems a little risky to me on a replacement basis
>
> Sent from my iPhone
>
> On Nov 19, 2021, at 13:40, petehand  wrote:
>
> 
>
> A few years ago I noticed that pretty much all the IN16s appearing on Ebay 
> were being bought by a Japanese customer, in lots of 1000. I wondered when 
> they would reappear.
>
> Tokyo Flash 
> 
> [image: watch.jpg]
>
> -- 
> You received this message because you are subscribed to the Google Groups 
> "neonixie-l" group.
> To unsubscribe from this group and stop receiving emails from it, send an 
> email to neonixie-l+...@googlegroups.com.
> To view this discussion on the web, visit 
> https://groups.google.com/d/msgid/neonixie-l/6833947d-7117-4cfc-a1a7-3f1ebdf791e5n%40googlegroups.com
>  
> 
> .
>
>

-- 
You received this message because you are subscribed to the Google Groups 
"neonixie-l" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to neonixie-l+unsubscr...@googlegroups.com.
To view this discussion on the web, visit 
https://groups.google.com/d/msgid/neonixie-l/0bd45024-b8d9-467c-8496-9759982190e3n%40googlegroups.com.

[neonixie-l] A pair of Rodan Okaya CD47 / GR414 on eBay (used with green corrosion on one pin).....

[Dekatron42]

Just spotted these: https://www.ebay.com/itm/353770528495 used with green 
corrosion on at least one pin.

/Martin

-- 
You received this message because you are subscribed to the Google Groups 
"neonixie-l" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to neonixie-l+unsubscr...@googlegroups.com.
To view this discussion on the web, visit 
https://groups.google.com/d/msgid/neonixie-l/967d5733-c1c0-40f6-b7e5-2450bfdbf40cn%40googlegroups.com.

Re: [neonixie-l] Re: Looking for some info about RCA DTF numitrons

[Dekatron42]

I'd say that they are pre-production or engineering samples, tubes that are 
produced either for in house development or samples sent to presumptive 
buyers/customers who are interested in designing with them to release 
products as they become available in production volumes.

/Martin

On Wednesday, 27 October 2021 at 22:29:18 UTC+2 Bartek Ogryz wrote:

> Thank you Martin!
> What does it mean in practice? Are those just an old names of the same 
> tubes, nowadays named DR22xx?
> Sorry for banal question. I understand the words, but not the whole phrase.
>
> Mark, those are beautifull, I won't be able to sleep now ;)
>
> Bartek.
>
> środa, 27 października 2021 o 20:02:53 UTC+2 Pramanicin napisał(a):
>
>> Er, you're not the only one with a stash of these :)
>>
>> They are nice looking tubes...
>>
>> On Wed, Oct 27, 2021 at 10:50 AM Mark Moulding  wrote:
>>
>>> I have a pretty good sized collection of RCA DTF-104B Numitrons, which I 
>>> think are especially attractive - they're large digits, in a flat-topped 
>>> end-view tube.  They're quite rare now, and in fact I think I have most of 
>>> the remaining world stock of these things (around 150 or so).  Although 
>>> I've successfully used them in a couple of projects, I've never been able 
>>> to locate a data sheet for them - does anyone have any pointers for this 
>>> specific tube?
>>>
>>> Thanks!
>>> ~~
>>> Mark Moulding
>>>
>>> [image: WoodClock (Small).JPG]
>>>
>>> On Tuesday, October 26, 2021 at 2:21:21 PM UTC-7 Dekatron42 wrote:
>>>
>>>> I knew I'd seen the number, and found them just now: 
>>>> http://www.tube-tester.com/sites/nixie/dat_arch/Numitron_RCA_01.pdf at 
>>>> the bottom of the page, they are development numbers for the DR2200 series.
>>>>
>>>> /Martin
>>>>
>>>> On Tuesday, 26 October 2021 at 22:21:47 UTC+2 Dekatron42 wrote:
>>>>
>>>>> Tubes designated DTF are development numbers used by Apollo/RCA - it 
>>>>> says so at the bottom of their datasheets.
>>>>>
>>>>> /Martin
>>>>>
>>>>> On Tuesday, 26 October 2021 at 21:43:52 UTC+2 Bartek Ogryz wrote:
>>>>>
>>>>>> Hi!
>>>>>> They appeared on eBay last days: DTF137, DTF138, DTF140 (or maybe 
>>>>>> DTF/37, DTF/38, DTF/40). What are theese? Anyone has some more knowledge 
>>>>>> about them?
>>>>>>
>>>>>> Bartek.
>>>>>>
>>>>>> BTW: If someone is interested in numitrons, quite rare Apollo DA-2500 
>>>>>> are hiding on eBay: item no 254866404573. Unfortunatelly, as the seller 
>>>>>> told me, all that have left, are without markings...
>>>>>>
>>>>> -- 
>>> You received this message because you are subscribed to the Google 
>>> Groups "neonixie-l" group.
>>> To unsubscribe from this group and stop receiving emails from it, send 
>>> an email to neonixie-l+...@googlegroups.com.
>>> To view this discussion on the web, visit 
>>> https://groups.google.com/d/msgid/neonixie-l/1baae699-e553-4f02-95f7-9b6b07cbee90n%40googlegroups.com
>>>  
>>> <https://groups.google.com/d/msgid/neonixie-l/1baae699-e553-4f02-95f7-9b6b07cbee90n%40googlegroups.com?utm_medium=email_source=footer>
>>> .
>>>
>>

-- 
You received this message because you are subscribed to the Google Groups 
"neonixie-l" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to neonixie-l+unsubscr...@googlegroups.com.
To view this discussion on the web, visit 
https://groups.google.com/d/msgid/neonixie-l/1a2abe6e-9937-4b83-85c1-1e44912f8afbn%40googlegroups.com.

[neonixie-l] Re: Looking for some info about RCA DTF numitrons

[Dekatron42]

I knew I'd seen the number, and found them just now: 
http://www.tube-tester.com/sites/nixie/dat_arch/Numitron_RCA_01.pdf at the 
bottom of the page, they are development numbers for the DR2200 series.

/Martin

On Tuesday, 26 October 2021 at 22:21:47 UTC+2 Dekatron42 wrote:

> Tubes designated DTF are development numbers used by Apollo/RCA - it says 
> so at the bottom of their datasheets.
>
> /Martin
>
> On Tuesday, 26 October 2021 at 21:43:52 UTC+2 Bartek Ogryz wrote:
>
>> Hi!
>> They appeared on eBay last days: DTF137, DTF138, DTF140 (or maybe DTF/37, 
>> DTF/38, DTF/40). What are theese? Anyone has some more knowledge about them?
>>
>> Bartek.
>>
>> BTW: If someone is interested in numitrons, quite rare Apollo DA-2500 are 
>> hiding on eBay: item no 254866404573. Unfortunatelly, as the seller told 
>> me, all that have left, are without markings...
>>
>

-- 
You received this message because you are subscribed to the Google Groups 
"neonixie-l" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to neonixie-l+unsubscr...@googlegroups.com.
To view this discussion on the web, visit 
https://groups.google.com/d/msgid/neonixie-l/2c9ef490-64b9-49b0-b6d0-62b5b8e93682n%40googlegroups.com.

[neonixie-l] Re: Looking for some info about RCA DTF numitrons

[Dekatron42]

Tubes designated DTF are development numbers used by Apollo/RCA - it says 
so at the bottom of their datasheets.

/Martin

On Tuesday, 26 October 2021 at 21:43:52 UTC+2 Bartek Ogryz wrote:

> Hi!
> They appeared on eBay last days: DTF137, DTF138, DTF140 (or maybe DTF/37, 
> DTF/38, DTF/40). What are theese? Anyone has some more knowledge about them?
>
> Bartek.
>
> BTW: If someone is interested in numitrons, quite rare Apollo DA-2500 are 
> hiding on eBay: item no 254866404573. Unfortunatelly, as the seller told 
> me, all that have left, are without markings...
>

-- 
You received this message because you are subscribed to the Google Groups 
"neonixie-l" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to neonixie-l+unsubscr...@googlegroups.com.
To view this discussion on the web, visit 
https://groups.google.com/d/msgid/neonixie-l/607c24e0-3073-46c2-ad68-0df29ffa099fn%40googlegroups.com.

[neonixie-l] Re: OG4 dekatron glass diameter

[Dekatron42]

A few of approximately a hundred had a width of 30.4mm for the largest with 
black Bakelite base, 30.5mm with brown Bakelite and 30.3mm with metal base 
measured with a caliper. Some were tilted somewhat in the bases so if you 
are having a tight fit those would not fit as they were tilted a millimeter 
or more.

/Martin

On Monday, 11 October 2021 at 18:36:54 UTC+2 Sgitheach wrote:

> Hi all,
>
> The OG4 datasheet says the maximum diameter of the glass bottle of an 
> OG4 is 31mm. A quick check of the few OG4 that I have suggests no more 
> than 30mm in practice. I'm trying to fit an OG4 through an existing hole 
> reliably and not be dependant on the few samples I have.
>
> If anyone has some OG4s to hand and some calipers, then I'd appreciate 
> knowing any measurements that are made and reported here.
>
> Ta Grahame
>
>
>

-- 
You received this message because you are subscribed to the Google Groups 
"neonixie-l" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to neonixie-l+unsubscr...@googlegroups.com.
To view this discussion on the web, visit 
https://groups.google.com/d/msgid/neonixie-l/290db4e9-47ea-4676-b541-97a79bef704fn%40googlegroups.com.

Re: Need scan of "Base" in Burroughs typeface (was Re: [neonixie-l] Burroughs 70910)

[Dekatron42]

@Terry Bowman: Please send me a direct email and explain in more detail 
what you are looking for so I can have a look at my Burroughs material to 
see if I can find what you are looking for.

/Martin

On Wednesday, 6 October 2021 at 00:16:32 UTC+2 Terry Bowman wrote:

> The "Burroughs 70910" topic has me excited because of this picture...
>
>
> Short version:
>
> I need the word "Base" set in the Burroughs typeface. The problem is that 
> the words "Burroughs Corporation" don't contain the lowercase letter "e". 
> I've searched everywhere online for text containing the "e" and until now 
> I've come up empty. This box has exactly the sort of text I need except for 
> one thing: it's too bold.
>
> Does anyone else have printed material from Burroughs containing an "e"? 
> And hopefully a lighter weight? Not that I'd turn down anything in 
> bold—I'll take everything I can get.
>
> I need a hi-res scan in a lossless format such as TIFF so that I can trace 
> the letters in Illustrator. The original needs to be as large and clear 
> as possible. Most of the scans of documents and boxes that I already have 
> are too small and/or the ink bled too far into the paper.
>
>
> More info:
>
> Part of corporate branding is selecting a typeface that will be used for 
> letterheads, documents, packaging etc. Burroughs used a version of the 
> typeface Clarendon. I've been to all of the font search sites and while 
> there are lots of Clarendons available none of them have the unique flavor 
> of the Burroughs version. While I'm well versed in font editing, management 
> etc. I don't have the artistic chops to properly alter letters.
>
> Burroughs used multiple variants of the Clarendon over the years: 
> different weights, different serifs and so on. I need all four letters in 
> exactly the same font.
>
>
> I love the lowercase "s" because it's almost perfectly symmetrical 
> vertically. Help me Nixie collectors, you're my only hope.
>
>
> Terry Bowman, KA4HJH
> "The Mac Doctor"
>
> Edward R. Murrow: “Who owns the patent on this vaccine?”
> Dr. Jonas Salk: “Well, the people, I would say. There is no patent. Could 
> you patent the sun?”—*See It Now*, 12 April 1955
>
>

-- 
You received this message because you are subscribed to the Google Groups 
"neonixie-l" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to neonixie-l+unsubscr...@googlegroups.com.
To view this discussion on the web, visit 
https://groups.google.com/d/msgid/neonixie-l/7094e406-c2f7-446c-86ad-f06a018add51n%40googlegroups.com.

Re: [neonixie-l] Burroughs 70910

[Dekatron42]

Thanks for the extra photos, seems like they had a lot of those boxes for 
the Beam Switching tubes and re-used one here!

/Martin

On Tuesday, 5 October 2021 at 19:51:01 UTC+2 Jeffry P wrote:

> [image: PXL_20211005_163123203.jpg]
> [image: PXL_20211005_163136426.jpg]
>
> On Sun, Oct 3, 2021 at 8:05 PM jb-electronics  
> wrote:
>
>> Cool, does the tube have any prints on it? Otherwise it looks like a 
>> standard B-7094 to me, anybody?
>>
>> Jens
>>
>> On 2021-10-03 7:54 p.m., Jeffry P wrote:
>>
>> [image: b70910 3.jpg][image: b70910 box.jpg]
>> -- 
>> You received this message because you are subscribed to the Google Groups 
>> "neonixie-l" group.
>> To unsubscribe from this group and stop receiving emails from it, send an 
>> email to neonixie-l+...@googlegroups.com.
>> To view this discussion on the web, visit 
>> https://groups.google.com/d/msgid/neonixie-l/f7b9ef41-8b35-4bb2-a093-e66f275fa40an%40googlegroups.com
>>  
>> 
>> .
>>
>>
>> -- 
>> You received this message because you are subscribed to the Google Groups 
>> "neonixie-l" group.
>> To unsubscribe from this group and stop receiving emails from it, send an 
>> email to neonixie-l+...@googlegroups.com.
>>
> To view this discussion on the web, visit 
>> https://groups.google.com/d/msgid/neonixie-l/c50ebceb-43e7-d1e6-5322-bbb72fdda1ca%40jb-electronics.de
>>  
>> 
>> .
>>
>

-- 
You received this message because you are subscribed to the Google Groups 
"neonixie-l" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to neonixie-l+unsubscr...@googlegroups.com.
To view this discussion on the web, visit 
https://groups.google.com/d/msgid/neonixie-l/1121dd6a-76be-41c0-8991-0384aba4aa6fn%40googlegroups.com.

Re: [neonixie-l] Burroughs 70910

[Dekatron42]

What does it say on the side of the box?

The box is from a Beam Switching Tube, probably a 6700 so the text might be 
from that type of tube.

/Martin

On Monday, 4 October 2021 at 12:56:14 UTC+2 Nocrotec wrote:

> Maybe a B-7094 with different pinout - Jeffry can you check?
>
> Am 04.10.2021 um 03:05 schrieb jb-electronics:
> > Cool, does the tube have any prints on it? Otherwise it looks like a 
> > standard B-7094 to me, anybody?
> > 
> > Jens
> > 
> > On 2021-10-03 7:54 p.m., Jeffry P wrote:
> >> b70910 3.jpgb70910 box.jpg
> >> -- 
> >> You received this message because you are subscribed to the Google 
> >> Groups "neonixie-l" group.
> >> To unsubscribe from this group and stop receiving emails from it, send 
> >> an email to neonixie-l+...@googlegroups.com 
> >> .
> >> To view this discussion on the web, visit 
> >> 
> https://groups.google.com/d/msgid/neonixie-l/f7b9ef41-8b35-4bb2-a093-e66f275fa40an%40googlegroups.com
>  
> >> <
> https://groups.google.com/d/msgid/neonixie-l/f7b9ef41-8b35-4bb2-a093-e66f275fa40an%40googlegroups.com?utm_medium=email_source=footer
> >.
> > 
> > 
> > -- 
> > You received this message because you are subscribed to the Google 
> > Groups "neonixie-l" group.
> > To unsubscribe from this group and stop receiving emails from it, send 
> > an email to neonixie-l+...@googlegroups.com 
> > .
> > To view this discussion on the web, visit 
> > 
> https://groups.google.com/d/msgid/neonixie-l/c50ebceb-43e7-d1e6-5322-bbb72fdda1ca%40jb-electronics.de
>  
> > <
> https://groups.google.com/d/msgid/neonixie-l/c50ebceb-43e7-d1e6-5322-bbb72fdda1ca%40jb-electronics.de?utm_medium=email_source=footer
> >.
>

-- 
You received this message because you are subscribed to the Google Groups 
"neonixie-l" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to neonixie-l+unsubscr...@googlegroups.com.
To view this discussion on the web, visit 
https://groups.google.com/d/msgid/neonixie-l/4b133cf5-2680-4640-8f2c-e337d71658e7n%40googlegroups.com.

Re: [neonixie-l] Re: Nixie Nirvana update

[Dekatron42]

So, what Nixies do you have that you are offering for trade and what are 
you looking for to add to your collection?

/Martin

-- 
You received this message because you are subscribed to the Google Groups 
"neonixie-l" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to neonixie-l+unsubscr...@googlegroups.com.
To view this discussion on the web, visit 
https://groups.google.com/d/msgid/neonixie-l/4ed87ed0-7d6b-448f-bd48-6ecaf4131b4an%40googlegroups.com.

[neonixie-l] Re: Looking for a PANAPLEX display driver module

[Dekatron42]

Burroughs used similar modules (as did probably other companies too) in 
some of their designs. I think it should not be to hard to reverse engineer 
the design and make your own similar modules if necessary.

Have you tried to swap two modules to see if the fault follows the module?

Do you have the schematic for the caluclator?

 /Martin

On Sunday, 26 September 2021 at 21:16:56 UTC+2 nice...@optonline.net wrote:

> Hello all,
>
> Does anyone have any knowledge of these packaged electronic circuits 
> (PEC’s) that
>
> are used in VICTOR calculators with PANAPLEX displays? The VICTOR part 
> number is
>
> shown in big numbers and the smaller number's significance is unknown. I 
> have a unit
>
> that is missing the top-left segment (f segment) in all digit positions. 
> Tracing backwards
>
> and comparing to working circuits, I believe the problem is originating at 
> one of these PEC’s.
>
> There are 8 of these used to drive each segment plus the DP. Each also has 
> 2 digit
>
> drivers for the 16 digit display. This means each module serves three 
> functions!
>
> Does anyone know of a source or have any that they would be willing to 
> sell?
>
> I only need one but would consider multiples. I also would consider a 
> boneyard calc that
>
> uses these. Thanks in advance for any help that you can offer.
>
>
> Rich
>  
>

-- 
You received this message because you are subscribed to the Google Groups 
"neonixie-l" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to neonixie-l+unsubscr...@googlegroups.com.
To view this discussion on the web, visit 
https://groups.google.com/d/msgid/neonixie-l/2f8061bb-debb-4ad5-b08b-c8f851e15c1cn%40googlegroups.com.

[neonixie-l] Re: Please help identifying a nixie tube.

[Dekatron42]

The SFC493E is designated as a 4-bit binary counter and from the photo you 
can see 8 holes in a straight line which probably means that there has been 
a Nixie driver like the 7441/74141 or similar soldered there (if there are 
8 more holes outside of the photo).

/Martin

On Saturday, 18 September 2021 at 23:35:36 UTC+2 Chuck wrote:

> With a 14 pin driver IC, this has almost certainly GOT TO BE a bi-quinary 
> style nixie.
>  
>
>  Original Message 
> From: "Bartek Ogryz" 
> Sent: 9/18/2021 5:08:31 PM
> To: "neonixie-l" 
> Subject: Re: [neonixie-l] Re: Please help identifying a nixie tube.
>
> Here are some new photos. Note that the brown glue is on the red paint, so 
> if it's IN-1, it had to be coated before placing in a base, I think. It has 
> 14 leads, but 3 of them are short cut.
> The IC i SFC493E.
> [image: nix2.jpg][image: nix3.jpg][image: nix1.jpg]
>  
> Bartek.
> sobota, 18 września 2021 o 14:58:03 UTC+2 tntm...@gmail.com napisał(a):
>
>> Interesting. I believe there were some IN-1s made with regular 5s but I 
>> dont know what other tube it could be.
>>
>>  
>> On Sat, Sep 18, 2021, 8:56 AM Bartek Ogryz  wrote:
>>
>>> Very interesting, Greg. I think you're right, that it's a russian tube. 
>>> But I'm not sure, if it's an IN-1 - all digits are similar, except digit 
>>> "5", wchich is not an inverted "2" (it's normally shaped). I'll place some 
>>> more photos later. 
>>>  
>>> Thank's,
>>> Bartek.
>>>  
>>> sobota, 18 września 2021 o 14:24:50 UTC+2 tntm...@gmail.com napisał(a):
>>>
 hmm interesting thought. Bartek should try seeing what the 5 looks 
 like...

  
 On Sat, Sep 18, 2021 at 8:22 AM Greg S  wrote:

> I am almost sure it is a russian IN-1 tube extracted from the base and 
> coated red.
>
> On Saturday, September 18, 2021 at 1:34:36 AM UTC+2 Bartek Ogryz wrote:
>
>> Hi! 
>> I'm trying to identify an unknown nixie tube. You can see it on a 
>> photos (I'm not able to do a better ones right now). The tube is red 
>> coated. It had a label with model name, but it's missing. It displays 
>> digits from 0 to 9, the digit height is about 19 - 20mm. Tube dimensions 
>> are: ~35mm height and ~30mm diameter. It has no socket, the leads are 
>> soldered to board.
>>  
>> Any ideas, what can it be?
>>  
>> Bartek.[image: nixie.jpg][image: nixie2.jpg]
>>
>  
>
 --

 You received this message because you are subscribed to the Google 
> Groups "neonixie-l" group.
> To unsubscribe from this group and stop receiving emails from it, send 
> an email to neonixie-l+...@googlegroups.com.

 To view this discussion on the web, visit 
> https://groups.google.com/d/msgid/neonixie-l/72ba3f85-415f-42e2-92b9-f68426b960ben%40googlegroups.com
>  
> 
> .

 --
>>> You received this message because you are subscribed to the Google 
>>> Groups "neonixie-l" group.
>>> To unsubscribe from this group and stop receiving emails from it, send 
>>> an email to neonixie-l+...@googlegroups.com.
>>>
>> To view this discussion on the web, visit 
>>> https://groups.google.com/d/msgid/neonixie-l/7a84d802-149e-4520-b8e6-9d13f4c6ae84n%40googlegroups.com
>>>  
>>> 
>>> .
>>
>> --
> You received this message because you are subscribed to the Google Groups 
> "neonixie-l" group.
> To unsubscribe from this group and stop receiving emails from it, send an 
> email to neonixie-l+...@googlegroups.com.
>
> To view this discussion on the web, visit 
> https://groups.google.com/d/msgid/neonixie-l/5c516a9b-fbbb-4c3c-babb-7b802cff11dbn%40googlegroups.com
>  
> 
> .
>

-- 
You received this message because you are subscribed to the Google Groups 
"neonixie-l" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to neonixie-l+unsubscr...@googlegroups.com.
To view this discussion on the web, visit 
https://groups.google.com/d/msgid/neonixie-l/26b3855c-ee67-459c-a182-5af7c54e359dn%40googlegroups.com.

[neonixie-l] Re: What is going on?

[Dekatron42]

Maybe someone won the lottery big time or they know something we don't?

Perhaps they come with the fountain of youth or the answer to the question 
"What 
do you get when you multiply six by nine?"

It's crazy! I've actually been contemplating if I should sell of a bunch of 
my rarer Nixies, saw a pair of GR10G with one socket go for something like 
USD $250 the other day..

/Martin

On Tuesday, 7 September 2021 at 16:11:55 UTC+2 Pramanicin wrote:

> 9 x NL900 tubes just sold for $609 on eBay. That is insane. They're 
> literally NL840's with a flat top. $609. 
>
>
>

-- 
You received this message because you are subscribed to the Google Groups 
"neonixie-l" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to neonixie-l+unsubscr...@googlegroups.com.
To view this discussion on the web, visit 
https://groups.google.com/d/msgid/neonixie-l/efc50037-ebee-4fd4-8502-703df1f2bfb8n%40googlegroups.com.

Re: [neonixie-l] VFD filament drive

[Dekatron42]

You can use airgaps in transformers in some cases but this design should be 
without one according to Ed.

I am using ferrite pot cores in some other designs where they are wound as 
a transformer but where the Q-value is of importance and there I use an 
airgap and also a trimmer through the center to adjust them for a minimum 
Q-value at a certain frequency.

Q-value according to TDK: 
https://product.tdk.com/en/contact/faq/inductors-0003.html and also at 
Wikipedia: https://en.wikipedia.org/wiki/Q_factor

This article explains airgap in inductors/transformers somewhat: 
https://www.linkedin.com/pulse/why-do-we-provide-air-gap-usually-inductor-designs-transformer-p

So sometimes it is a choice depending on design criteria like Q-value and 
material used in the transformer. There are normal laminated transformers 
that use an airgap too, but most mains transformers do not.

/Martin



On Wednesday, 1 September 2021 at 15:11:31 UTC+2 Paul Andrews wrote:

> Martin,
>
> I wonder why there should be no air gap?
>
> - Paul
>
> On Wednesday, September 1, 2021 at 1:55:30 AM UTC-4 Dekatron42 wrote:
>
>> Paul,
>>
>> I'll ask him, but a quick search at Digikey showed both some RM10 and 
>> ETD29 cores, but only a few. Finding Ferrite cores today is not easy, I 
>> have searched some for other projects and they aren't usually stocked in 
>> the ranges that the manufacturers make them, and if you want something 
>> outside what is available in stock it becomes very expensive as you'll have 
>> to by thousands if not more. I usually try the ones they have and have to 
>> live with that since I can't buy the thousands needed to get the perfect 
>> one. I'll ask Ed to have a look and see if any of the ones that are stocked 
>> will do - just remember that they will have to be the transformer type 
>> without an airgap between the center pieces to work in this application.
>>
>> /Martin
>>
>> On Wednesday, 1 September 2021 at 04:26:30 UTC+2 Paul Andrews wrote:
>>
>>>
>>> Hi Martin
>>>
>>> I tried to find a suitable core at digikey, but their parameters don’t 
>>> map very well to the equation that Ed gives. Could he take a look at what 
>>> they have and perhaps recommend something. For simplicity’s sake I just 
>>> looked at toroids 
>>> https://www.digikey.com/en/products/filter/ferrite-cores/936?s=N4IgTCBcDaICoHsBOCCWATAhgGwAQGNkBTAZxAF0BfIA
>>>
>>> Thanks - Paul
>>> On Friday, August 27, 2021 at 8:45:56 AM UTC-4 Dekatron42 wrote:
>>>
>>>> Since transformers isn't my best area, I only have basic understanding 
>>>> of the intricacies but I have experimented some with different 
>>>> transformers 
>>>> in different cases like when driving Trochotrons and Dekatrons I decided 
>>>> to 
>>>> ask an acquaintance who has worked with transformers. His name is Ed 
>>>> Dinning, I got to know him over at the UKVRRR forum (UK Vintage Radio 
>>>> Repair and Restoration forum: https://www.vintage-radio.net/forum/), 
>>>> he told me you are welcome to contact him via me so that his email is 
>>>> somewhat protected - if you ask him anything related to the 
>>>> VFD-drivers it would be kind if you could post something here in this 
>>>> forum 
>>>> so we all can learn from it.
>>>>
>>>> This is his answer to my question on what transformer to chose for the 
>>>> driver in the article, it sure helped me and I hope it helps anyone who 
>>>> wants to experiment with this driver:
>>>>
>>>> "Hi Martin, as it operates about 50/100KHz virtually any ferrite should 
>>>> do. It should be a transformer type with no air gap.
>>>> The turns are normally based on the transformer equation for square 
>>>> waves
>>>>
>>>> N= V/ 4 * F * B* Ae
>>>>
>>>> N=turns, V=volts F=frequency,B= flux density, typically 200/250mT for a 
>>>> ferrite, Ae the centre pole area in M^2
>>>>
>>>> The actual losses come out later on in the design process and are not 
>>>> part of the initial criteria
>>>>
>>>> Copper sizing is normally based on 3A per mm^2 of cross sectional area
>>>>
>>>> The turns figure he gives looks about right for something like an RM10 
>>>> core, or you could try an EE25 or an ETD29 core in sat F44 materials 
>>>> ETD's are the core of choice for this type of application and should be 
>>>> readily available.
>>>>
>>>> The more turns that 

Re: [neonixie-l] VFD filament drive

[Dekatron42]

Paul,

I'll ask him, but a quick search at Digikey showed both some RM10 and ETD29 
cores, but only a few. Finding Ferrite cores today is not easy, I have 
searched some for other projects and they aren't usually stocked in the 
ranges that the manufacturers make them, and if you want something outside 
what is available in stock it becomes very expensive as you'll have to by 
thousands if not more. I usually try the ones they have and have to live 
with that since I can't buy the thousands needed to get the perfect one. 
I'll ask Ed to have a look and see if any of the ones that are stocked will 
do - just remember that they will have to be the transformer type without 
an airgap between the center pieces to work in this application.

/Martin

On Wednesday, 1 September 2021 at 04:26:30 UTC+2 Paul Andrews wrote:

>
> Hi Martin
>
> I tried to find a suitable core at digikey, but their parameters don’t map 
> very well to the equation that Ed gives. Could he take a look at what they 
> have and perhaps recommend something. For simplicity’s sake I just looked 
> at toroids 
> https://www.digikey.com/en/products/filter/ferrite-cores/936?s=N4IgTCBcDaICoHsBOCCWATAhgGwAQGNkBTAZxAF0BfIA
>
> Thanks - Paul
> On Friday, August 27, 2021 at 8:45:56 AM UTC-4 Dekatron42 wrote:
>
>> Since transformers isn't my best area, I only have basic understanding of 
>> the intricacies but I have experimented some with different transformers in 
>> different cases like when driving Trochotrons and Dekatrons I decided to 
>> ask an acquaintance who has worked with transformers. His name is Ed 
>> Dinning, I got to know him over at the UKVRRR forum (UK Vintage Radio 
>> Repair and Restoration forum: https://www.vintage-radio.net/forum/), he 
>> told me you are welcome to contact him via me so that his email is somewhat 
>> protected - if you ask him anything related to the VFD-drivers it would 
>> be kind if you could post something here in this forum so we all can learn 
>> from it.
>>
>> This is his answer to my question on what transformer to chose for the 
>> driver in the article, it sure helped me and I hope it helps anyone who 
>> wants to experiment with this driver:
>>
>> "Hi Martin, as it operates about 50/100KHz virtually any ferrite should 
>> do. It should be a transformer type with no air gap.
>> The turns are normally based on the transformer equation for square waves
>>
>> N= V/ 4 * F * B* Ae
>>
>> N=turns, V=volts F=frequency,B= flux density, typically 200/250mT for a 
>> ferrite, Ae the centre pole area in M^2
>>
>> The actual losses come out later on in the design process and are not 
>> part of the initial criteria
>>
>> Copper sizing is normally based on 3A per mm^2 of cross sectional area
>>
>> The turns figure he gives looks about right for something like an RM10 
>> core, or you could try an EE25 or an ETD29 core in sat F44 materials 
>> ETD's are the core of choice for this type of application and should be 
>> readily available.
>>
>> The more turns that are used the lower the iron losses and the cooler the 
>> core runs, but the copper losses increase unless fatter copper is used.
>> Skin effect will be of minor importance at your frequency
>>
>> It would also work on a normal laminated core at 50Hz which should not be 
>> too big as you can run that at up to 1.5T flux density.
>> Regulation could be a normal type of regulator set for constant current.
>>
>> Always many choices in Engineering
>>
>> Cheers,  Ed
>>
>> Ed Dinning Retired Engineer"
>>
>> /Martin
>>
>> On Wednesday, 25 August 2021 at 23:02:48 UTC+2 Paul Andrews wrote:
>>
>>> When I have time, I will try the driver at the link Martin gave (
>>> http://www.nutsvolts.com/media-files/Forum-Articles/QA_201110.pdf), but 
>>> without the transformer initially. As far as I can tell, the transformer is 
>>> just to make the VFD drive isolated so you can pull it up above ground.
>>>
>>

-- 
You received this message because you are subscribed to the Google Groups 
"neonixie-l" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to neonixie-l+unsubscr...@googlegroups.com.
To view this discussion on the web, visit 
https://groups.google.com/d/msgid/neonixie-l/596cdfc3-0e71-4aff-9101-b47c781a92bdn%40googlegroups.com.

[neonixie-l] Next time you struggle to design a Nixie-clock, or any other clock for that matter, it might be good to know how scientists look at a clock......

[Dekatron42]

Just read this and found it fascinating!

https://www.quantamagazine.org/the-new-science-of-clocks-prompts-questions-about-the-nature-of-time-20210831/

I especially like this part:

"The first thing to note is that pretty much everything is a clock. Garbage 
announces the days with its worsening smell. Wrinkles mark the years. “You 
could tell time by measuring how cold your coffee has gotten on your coffee 
table,” said Huber, who is now at the Technical University of Vienna and 
the Institute for Quantum Optics and Quantum Information Vienna."

:)

/Martin

-- 
You received this message because you are subscribed to the Google Groups 
"neonixie-l" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to neonixie-l+unsubscr...@googlegroups.com.
To view this discussion on the web, visit 
https://groups.google.com/d/msgid/neonixie-l/c0558ed6-bee6-406a-bcc2-4b4e1192e4ban%40googlegroups.com.