Re: [neonixie-l] Re: Mounting IN-18 tubes

Thanks. I ordered some pins. Can anyone tell me the thickness of the acrylic disks that PV electronics use? I am about to order some acrylic pieces for something else so it would be good to get a few disk prototypes made. -- You received this message because you are subscribed to the Google

[neonixie-l] Pulse current and the Taylor HVPS

Hi, I'm just doing some planning for a small battery powered clock using ZM5900 tubes. I want to drive 6 of them and was looking at the Taylor 1363/1364 HVPS units. The datasheet

[neonixie-l] Burroughs 4021L in a Lucite block.

Have you guys seen this ? I would like a clock just made out of 6 tubes mounted like this! -- You received this message because you are subscribed to the Google Groups "neonixi

[neonixie-l] IN18 acrylic socket

I'm a big acrylic fan. The finished clock looks nice too. -- 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 post to this

[neonixie-l] A tube for less than $5

In 1966. In quantities of 1,000 or more. That is $37 in today's money. In case you get too concerned about the price of nixie's on ebay! -- You received this messag

[neonixie-l] Re: In18 displaying cathode poisoning after 1000hrs or less.

I would expect that a leaky tube would be suffering from contamination. This wiki article is a good description of how these tubes work: https://en.wikipedia.org/wiki/Gas-filled_tube#Gas_purity On Saturday, February 18, 2017 at 10:11:43 PM UTC-5, Trumpeter wrote: > > Hello all, > > I have what w

[neonixie-l] Completed clock...

Hi, Finally finished messing with my GRA&AFCH arduino shield clock. The shield is completely pre-assembled. However I re-wrote the software, added a WiFi interface (to set the time and control the clock) and built the case (I used pololu.com to get the acrylic cut). This was all new to me, so i

[neonixie-l] HV control chips

Hi, I was following up on a discussion elsewhere which mention the HV5530 as a control chip for Nixie tubes. This has 32 outputs and 12V digital control, so it has some drawbacks. There are many other similar chips, in particular the HV3418, which has 64 outputs at 180V and 5mA, with 5V digital

[neonixie-l] Re: HV control chips

I am looking to drive regular Nixies. I am trying to figure out how to read those datasheets! There are a lot of variations on a theme with this family of chips. I had to think for a bit, but I get what you are saying re. low voltage - I have to keep reminding myself that low voltage == ON (and

[neonixie-l] Re: Some guy offering Rodan CD47 tubes

Whoever buys these, I need to see that clock! On Wednesday, February 22, 2017 at 7:42:02 AM UTC-5, Ian Sparkes wrote: > > There's some guy called Andre offering a number of CD47 tubes here: > > > https://www.tubeclockdb.com/component/kunena/7-buy-sell-trade/7336-rodan-cd47-gr-414-nixie.html > > St

[neonixie-l] Re: HV control chips

I'm slowly beginning to understand more, but on reflection I am clearly not understanding something. The HV5530 specs say output voltage is 0 - 300V. What sets that voltage? That might also be the wrong question, I am in the dark about how tying these 'outputs' to the cathodes actually works. A

[neonixie-l] Re: Some guy offering Rodan CD47 tubes

I am curious where he got them and how much he paid. I'm not suggesting that anyone could do an end-run around him, it would just be interesting to know. On Wednesday, February 22, 2017 at 7:42:02 AM UTC-5, Ian Sparkes wrote: > > There's some guy called Andre offering a number of CD47 tubes here

[neonixie-l] Re: HV control chips

My PV electronics IN-8-2 and my GRA&AFCH IN-14 clocks both use the HV5812 . This specifies 80V 'output'. I assume this works because the off tube cathodes drift up to 80V, which is enough to turn them off? On Thursday, February 23, 2017 at 7:12:43

Re: [neonixie-l] Re: Some guy offering Rodan CD47 tubes

http://www.thingiverse.com/thing:880429 On Thursday, February 23, 2017 at 7:25:10 PM UTC-5, I wrote: > > That sounds really very cool. Any size, within reason that anyone would > want, and much less expensive than Rodan CD47's. Engrave your own, if > you're good at that sort of thing, or have i

[neonixie-l] Re: HV control chips

Well there's a lot to think about there. I'm looking to build an IN-18 clock and a battery powered Z5900 6 tube clock, and I have some IN-8-2s I just want to mess around with, and I want to light up the decimal points too. Obviously they all have different needs - especially the Z5900 and IN-18

[neonixie-l] Re: HV control chips

Wow! Too much choice! I have bought one (and an extraction tool). Just need to buy the chips and level converter now! On Friday, February 24, 2017 at 10:51:17 AM UTC-5, SWISSNIXIE - Jonathan F. wrote: > > No need to build an breadboard adapter - just look up on ebay for " plcc44 > adapter" or "

[neonixie-l] Re: Nixie-style EL display

Looks great! On Wednesday, March 1, 2017 at 1:18:08 PM UTC-5, jrehwin wrote: > > This is kind of cool, someone has bent EL wire into numerals to yield a > nixie-ish display. > > https://theledroom.wordpress.com/2017/02/11/el_nixie-tube/ > > - John > > -- You received this message because you a

[neonixie-l] Why Mercury?

Hi, I've been trying to find information on what the mechanism is that allows Mercury to extend the lifespan of Nixie tubes. I haven't been able to find anything, only assertions that 'Mercury is added to extend the lifespan of the tubes'. I found a link about the halogen cycle on this group. A

Re: [neonixie-l] Re: Why Mercury?

OK, but how does it reduce sputtering? > On Mar 8, 2017, at 8:08 AM, Dekatron42 wrote: > > Here's one patent: http://google.ch/patents/US3944869 that says: > > "For many years, display devices such as NIXIE tubes have used mercury vapor > along with the normal inert gas content to minimize cat

[neonixie-l] Lighting up a DM160

I just impulsively bought some DM160 VFD indicators and now I am at a loss as to how to power them! Can anyone help? -- 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

[neonixie-l] Re: Lighting up a DM160

Boy did I buy myself into a hole with this one! I had just about got to grips with Nixie tubes, now I have a whole new technology to learn; I'm sure a lot of the folks on this list know the ins and outs of triodes - I'm not one of them! I will get there eventually though. Apologies if what foll

[neonixie-l] Re: Lighting up a DM160

Here is a schematic. Some notes about it: The filament (aka the cathode) should always have 1V across it. It has to be warm. When it is warm it has a resistance of about 30R. So the purpose of the resistor network there is that it cuts the 12V up into 3V, 1V and 8V (approximately). The filament

[neonixie-l] Re: Radioactive Nixies - Study

I have often wondered about taking a geiger counter to my tubes. Call me paranoid, but I wonder where some of the NOS tubes come from precisely. On Sunday, March 12, 2017 at 3:41:11 PM UTC-4, SWISSNIXIE - Jonathan F. wrote: > > Hi > > This might be a little off topic or irrelevant, but maybe som

[neonixie-l] Re: IN-14 and Mystery Tube?

Tell me about it :-/ I had smoke coming out of something the other day. Amazingly nothing was damaged. Live and learn! On Sunday, March 12, 2017 at 10:17:17 PM UTC-4, gregebert wrote: > > *If everything is properly connected*, even an internal short in the > 74141 that leaked high-voltage back t

[neonixie-l] Re: Lighting up a DM160

, Paul Andrews wrote: > > I just impulsively bought some DM160 VFD indicators and now I am at a loss > as to how to power them! Can anyone help? > -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and

Re: [neonixie-l] Re: IN-14 and Mystery Tube?

The only components in there were resistors and the breadboard itself. Voltages were nixie level. I would say it was either a resistor or the breadboard itself. I am pretty religious about measuring stuff before I turn the power on (and after), and if there had been anything more complicated in

[neonixie-l] Re: Radioactive Nixies - Study

Which is where my thoughts about the provenance of tubes from the Ukraine arises. Where are these warehouses that for some reason still have large quantities of Nixie tubes in them? This doesn't keep me up at night, but I would like to know. Perhaps someone could make a documentary about the su

[neonixie-l] A new old NixiSat about to be built!

Does this help (not sure it is the same thing, but it might help you get in touch with the right people): http://www.azevedo-devices.com/blog/nwts-syncing-a-jeff-thomas-gpsii-clock -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe f

[neonixie-l] Any good (simple) guides to building puck converters?

I've come to the conclusion that I need to be able to build my own puck converters, at least so I can understand what I am looking at when I look at schematics for other people's converters! I could do with something that takes me from a simple example up to more complex examples that fix issues

[neonixie-l] Re: Any good (simple) guides to building puck converters?

I need to wait until the coffee takes effect. I mean boost converters! Can I change the title? On Tuesday, March 14, 2017 at 8:35:02 AM UTC-4, Paul Andrews wrote: > > I've come to the conclusion that I need to be able to build my own puck > converters, at least so I can unders

[neonixie-l] Any good guides to building boost converters?

Hi, I have decided that I need to actually understand the details of boost converter design, rather than just the principles (you know, back-emf and all that). It would be helpful to have a course that takes me through a basic implementation and then addresses issues such as efficiency, input

Re: [neonixie-l] Radioactive Nixies - Study

My wife sends us this link: http://thedollop.net/wp/episode-20-dollop/ about David Hahn. I think she means it as a cautionary tale! > On Mar 14, 2017, at 2:01 PM, gregebert wrote: > > Anyone know how the radiation "hazard" of nixies compares to Xrays produced > by color televisions/computer mo

Re: [neonixie-l] Radioactive Nixies - Study

n top of a silo containing nuclear war heads would set them off... > On Mar 15, 2017, at 10:36 AM, NeonJohn wrote: > > > >> On 03/15/2017 09:42 AM, Mark Moulding wrote: >> >>> On Tuesday, March 14, 2017 at 10:02:40 AM UTC-7, Paul Andrews wrote: >

Re: [neonixie-l] Re: brightest nixie tube clock already assembled

Interesting. I played around with adding Alexa support to one of my clocks. Nothing fancy, just being able to turn the alarm on and off, the backlights on and off etc. Basically it made it look like multiple wemo devices so all the commands were things like 'Alexa turn backlight off' The alarm

[neonixie-l] IN-18 ON EBAY?

Bought some NOS from Ukrainian_gifts. Haven't done much with them since other than fire one up just for the kicks. Worked fine. -- 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] Re: brightest nixie tube clock already assembled

I like the clocks from these guys: http://www.ebay.com/usr/gra_and_afch_2?_trksid=p2053788.m1543.l2754 They are direct drive so as bright as they can be. They come in various forms, so you would probably want to make sure you at least bought one with the arduino included. They have one with a c

Re: [neonixie-l] Mounting IN-18 tubes

gt; > See diagram attached: > > > John S > > > On 7 Feb 2017, at 03:48, Paul Andrews wrote: > > Does anyone have any suggestions about how to mount IN-18 tubes? It looks > like they are intended to be socketed and I see some sockets/pins on ebay. > I would like to unde

[neonixie-l] Re: Mounting IN-18 tubes

A picture of one of my IN-18s plugged into the first PCB I have ever designed and had made (KiCAD and OSH park). It is a breadboard adaptor! It is being driven from an arduino using a K155ID1. Someone (I don't remember who) pointed out that you can use a K155ID1 to drive LEDs as a good way to

Re: [neonixie-l] Re: Mounting IN-18 tubes

Current measured at 6mA. > On Mar 16, 2017, at 9:40 PM, Gene Segal wrote: > > Looks WAY overdriven!!! Don't expect it to last too long at that current... > >> Paul Andrews March 16, 2017 at 6:28 PM >> >> A picture of one of my IN-18s plugged into the first P

[neonixie-l] Re: brightest nixie tube clock already assembled

e beautiful > and cheap tubes (here in Poland about 2,5$ for used tube) > > > W dniu czwartek, 16 marca 2017 15:34:05 UTC+1 użytkownik Paul Andrews > napisał: >> >> I like the clocks from these guys: >> http://www.ebay.com/usr/gra_and_afch_2?_trksid=p2053788.m15

[neonixie-l] Re: Mounting IN-18 tubes

re out how best to get them from the Eagle files! On Monday, February 6, 2017 at 10:48:04 PM UTC-5, Paul Andrews wrote: > > Hi, > > Does anyone have any suggestions about how to mount IN-18 tubes? It looks > like they are intended to be socketed and I see some sockets/pins o

[neonixie-l] Lixies/Tixie Clock

Just came across this on Tindie: > > Here's a link to a cool Youtube video: https://www.youtube.com/watch?v=FwXqQos0ZFk I have to say. I really like this. -- You rece

Re: [neonixie-l] Lixies/Tixie Clock

funds to pay for car > repairs, and nothing was ever delivered, nor was there any attempt at making > it right with backers. > >> On Tue, Mar 21, 2017 at 5:37 PM, Paul Andrews wrote: >> Just came across this on Tindie: >> >> >> >> >> >>

[neonixie-l] 6844A saga

Hi all, I recently bought some 6844A tubes of ebay - I fancied making a four tube clock with round top-view tubes. In my head I had assumed that these would be doped with mercury, but they aren't. However, before I found that out I bought four Raytheon JAN 6844A tubes and 2 Burroughs 6844A tube

[neonixie-l] Re: 6844A saga

Well this is fun! I upped the current signifcantly (6.9mA - just over 2x recommended max), which caused some internal arcing briefly! Blew a resistor (I guess it was a 1/4 W. Interestingly it went from being a 5.1K to being a 27K resistor). Bottom line is it kinda sorta works. But the results a

[neonixie-l] Re: IN-13 Burn-in

There is an article about IN-13 tubes here: https://www.saltechips.com/lab/the-parasitic-current-leakage-mechanism-of-the-in-13-tube/. The whole site is dedicated to those tubes. It is very interesting reading for anyone interested in how Nixie tubes work. On Thursday, March 16, 2017 at 8:20:

[neonixie-l] Re: 6844A saga

Running them at a high currenr for a while has workee, except for one holdout. This digit will light at about 4mA, which is the maximum recommended. Occasionally it will light at 2mA. When it lights it pulls the same current as all the other digits, otherwise it draws less. So I am wondering if

[neonixie-l] Constant current source design

I wanted to start a discussion about constant current sources (as opposed to sinks, because I want to provide a constant current to the anode regardless of which cathode is pulled to ground). I've found many articles on the web. Some for Nixie constant current sinks, some for LED constant curre

Re: [neonixie-l] Lixies/Tixie Clock

What files/photos section? i.e. How do we access that? On Friday, March 24, 2017 at 5:07:36 AM UTC-4, johnk wrote: > > Some of you might like what you see in the files/photos section of this > Google Group or the old Yahoo Group - pics of non-nixie displays and lots > of interesting stuff. > >

[neonixie-l] Re: Yahoo! group files section...

Works for me. Thanks for putting this up! -- 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 post to this group, send an e

[neonixie-l] Lighting up an IV-15

Hi, As bought some DM160 and IV-15 tubes a while back. It was difficult to find much information on either, but especially the IV-15 tubes. There is a partial translation of the Russian data sheet here on this group and I managed to find some more information at http://www.radiomuseum.org/tube

Re: [neonixie-l] Lighting up an IV-15

Here's a picture > On Mar 27, 2017, at 3:47 PM, Paul Andrews wrote: > > Hi, > > As bought some DM160 and IV-15 tubes a while back. It was difficult to find > much information on either, but especially the IV-15 tubes. There is a > partial translation of the Russi

[neonixie-l] My favorite Nixie tube

at least for now! Just de-soldered a bunch of these from an old counter (and some 7441A chips). They were very grimy, but cleaned up nicely and they all work well. Cathodes are shiny and there is no darkening on the glass:

Re: [neonixie-l] Re: My favorite Nixie tube

It's a Mullard ZM1177 > On Mar 29, 2017, at 8:21 AM, 'Terry S' via neonixie-l > wrote: > > I like the horizontal wire grid as well, what is the tube? > Terry > >> On Monday, March 27, 2017 at 10:56:56 PM UTC-5, Paul Andrews wrote: >> at least for n

[neonixie-l] Re: Constant current source design

My parts arrived, so I finally got to try it. It actually works! Now on to trying variations - I plan to follow the course here <https://www.allaboutcircuits.com/textbook/experiments/chpt-5/current-mirror/> . On Friday, March 24, 2017 at 11:26:32 PM UTC-4, Paul Andrews wrote: > >

[neonixie-l] Re: My favorite Nixie tube

There's some interesting tubes for sale on ebay atm. DR-2010 (made in Brasil?), and in light of Tomasz post, some ZM1080

[neonixie-l] Re: Constant current source design

If I just look at all of the circuit diagrams for various current limiters, it begins to seem like any combination of a couple of transistors and a bunch of resistors works! Hence my need to do some 'practicals', it makes me go in to it all in enough depth to actually begin to understand. BTW,

Re: [neonixie-l] Re: Constant current source design

sly from the mains? > > John K > > > > > - Original Message - From: "Paul Andrews" > To: "neonixie-l" > Sent: Saturday, April 01, 2017 11:51 PM > Subject: [neonixie-l] Re: Constant current source design > > > If I just look at all of th

[neonixie-l] Re: Constant current source design

Thanks Greg and John. That is very interesting about the isolated DCDC converters. I've been trying to get the simulator in KiCAD 5.x nightlies to simulate some of these circuits, but no luck so far. I might give LTSpice a try. I've tried out a few variations on the constant current source them

[neonixie-l] Re: Constant current source design

Next installment. First I tried the current mirror with 2K resistors between +300V and the emitters. This works fine, but is also no more stable than the first solution. It presumably also wastes more power as R2 has to be higher - it is setting the current, so I chose 100K here to get 2mA:

[neonixie-l] Re: Constant current source design

Of course, I meant +200V, not +300V! On Sunday, April 2, 2017 at 1:58:40 PM UTC-4, Paul Andrews wrote: > > Next installment. First I tried the current mirror with 2K resistors > between +300V and the emitters. This works fine, but is also no more stable > than the first solution. I

Re: [neonixie-l] Re: Rare tubes on eBay..

Do tell? -- 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 post to this group, send an email to neonixie-l@googlegroups.c

[neonixie-l] Re: Constant current source design

Here is a link to a paper about using a depletion mode MOSFET for the same purpose. It gives this equation for calculating the resistor value, whi

[neonixie-l] Re: Constant current source design

Although a mosfet current mirror would use fewer components as you only need one Rset (section three of this <http://web.mit.edu/6.012/www/SP07-L25.pdf>paper). I guess I need to place yet another order with digikey to try some of these out. On Friday, April 7, 2017 at 5:34:49 PM UTC-4

Re: [neonixie-l] Re: Constant current source design

Totally agree. This is one reason I like to actually try these things out. > On Apr 7, 2017, at 11:02 PM, gregebert wrote: > > My concern with current limiters that rely heavily upon the datasheet specs > (Vgs for Depletion-mode regulator; Vbe for current-mirror) is that > variations due to

Re: [neonixie-l] Constant current source design

You need a few ions around in the Neon for the cascade to start. This can happen for a variety of reasons including cosmic rays, background radiation or doping of the gas mixture with something radioactive. There is at least one thread on here about radioactive nixies (which sent me off on a sid

Re: [neonixie-l] Re: Manufacturing affordable large, new nixie tubes

Quite. Thankyou for saying this. Life is full of people saying why you can't do something. Achievements happen despite that and not because of it. -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving e

[neonixie-l] What is this 6209 G from sharp calculator?

Hi, I'm salvaging some tubes from an old (broken) Sharp calculator and there is this on the display board (unfortunately I couldn't de-solder it so it is a little beat up, though probably salvageable). I can't find out what it is, does anyone know?

Re: [neonixie-l] Re: Manufacturing affordable large, new nixie tubes

I would buy that! On Friday, April 21, 2017 at 11:39:29 PM UTC-4, Jens Boos wrote: > > Wow, now we did it. Is that really the message we want to send to a person > who is looking into making Nixie tubes? > > I admire Dalibor for what he has achieved. Perhaps some of you remember > that I tried t

[neonixie-l] Love for small tubes

This is a little video of a CD80-P cycling through all its digits (plus the decimal point is lit up). I know that most people are obsessed with the larger tubes, but I love the small tubes. The digits on this are particularly sharp (no pun intended - it was salvage

Re: [neonixie-l] Re: What is this 6209 G from sharp calculator?

It has connections to each of the cathodes. There are twelve cathodes for these tubes (CD80-P), so twelve pins are connected each to a different cathode (that might be 11. There is one trace that is difficult to follow). That leaves 8 pins on the device itself. Each cathode on a tube is connecte

[neonixie-l] Re: What is this 6209 G from sharp calculator?

, 2017 at 11:15:29 AM UTC-4, Paul Andrews wrote: > > Hi, > > I'm salvaging some tubes from an old (broken) Sharp calculator and there > is this on the display board (unfortunately I couldn't de-solder it so it > is a little beat up, though probably salvageable). I c

[neonixie-l] Video with nixies display in old secret place

I was staying in Portmeirion a while back, they have have a 24 hour prisoner channel on the TV in the rooms. I was watching the finale and was thinking that this is the era of the Nixie tube (1967), and what do you know? In the final minutes in the village there is a countdown sequence that uses

Re: [neonixie-l] Video with nixies display in old secret place

I agree. My prisoner sighting, for example, is just one tube, yet it is certainly of the right era. BTW, I will add it once I get a spare moment - I have the boxed set so I can get the exact timing. > On Apr 25, 2017, at 12:55 AM, SWISSNIXIE - Jonathan F. > wrote: > > Great idea! But why exclud

Re: [neonixie-l] Video with nixies display in old secret place

I think 'no personal or commercial products' gets across what we are looking for. BTW, The Prisoner was a TV program so 'Movies' is a little restrictive. I think Videos would also qualify (for example music Videos and YouTube videos). But 'hidden' is probably a good enough term. > On Apr 25,

[neonixie-l] Extreme cathode cleaning?

Some very pretty pictures here http://www.hazardousphysics.com/misc/Nixie_tube_at_30V.html though personally I think he is taking the whole cathode cleaning thing a bit too far! One day I will (might?) build myself a Tesla coil... -- You received this message because you are subscribed to

[neonixie-l] Re: Radioactive Nixies - Study

Just got my radioactive nixie tubes. Sadly they seem to make my geiger counter read less than normal!

[neonixie-l] Re: Video with nixies display in old secret place

While I was searching for information on 122P224 tubes (aka B-5992-A), I came across a document in our very own document repository here . I transferred all the info into the shared spreadsheet, I added four more entries and I arran

[neonixie-l] Re: Video with nixies display in old secret place

That would be B-5*0*92-A. On Thursday, April 27, 2017 at 9:55:54 PM UTC-4, Paul Andrews wrote: > > While I was searching for information on 122P224 tubes (aka B-5992-A), I > came across a document in our very own document repository here > <https://drive.google.c

[neonixie-l] 2017.5.19-21 Maker Faire Bay Area. Come to see my designs!

If I lived anywhere near there I certainly would. Your clocks are beautiful. -- 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.c

[neonixie-l] Help identifying unmarked tube

Hi, I recently took delivery of a job lot of Nixies. It included several tubes of the B8570/B5750/B5855, which basically look like re-branded Japanese tubes too me. However, the lot also included an unmarked tube that I can't identify. It is unusual because it has a decimal point and a thousand

[neonixie-l] The insides of a B5092A...

Here is a picture of the contents of a B5092A. This tube was broken when it arrived, and got more broken when I decided to see how stiff the socket I have for these things was (answer: Pretty stiff!). I figure some of you might be concerned about any residual radioactivity so I checked. Naturall

Re: [neonixie-l] Re: The insides of a B5092A...

Roughly in the middle. On Apr 30, 2017, at 1:36 PM, gregebert wrote: Never knew about the extra '8'.where was it located in the vertical stack ? -- You received this message because you are subscribed to a topic in the Google Groups "neonixie-l" group. To unsubscribe from this topic, visi

[neonixie-l] Re: The insides of a B5092A...

Between the 5th and 6th white insulator disks starting from the top. On mine you can see a lead going from that to the grey metal support. On Sunday, April 30, 2017 at 1:36:45 PM UTC-4, gregebert wrote: > > Never knew about the extra '8'.where was it located in the vertical > stack ? > > >

[neonixie-l] Re: Radioactive Nixies - Study

I did try putting the SB-20 on top of a bunch of tubes (a bunch = 3 in this case). It briefly got up to around 120CPM, but mostly hovered around 50-70CPM. I'm not sure what background is at my place. Anything between 15 and 35 CPM maybe. So maybe it registered something, or it could be statistic

[neonixie-l] NL-1261

Someone just sold a pair of NL-1261 Nixie tubes on eBay. What are they? I can't find any info on them. -- 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+

[neonixie-l] Re: Spotted on Ebay: B6091/NL8423 nixies (larger20mm/0.8 inch). Manufactured 1985

Or you could bid on this one: https://www.ebay.com/itm/112392941139 That seller has some interesting stuff. -- 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 neoni

[neonixie-l] IV-1 datasheet English translation

Hi, I translated the IV-1 specs from this book into English using Google Translate. I uploaded the document to our google drive here - it includes drawings of the tube. If anyone spots any

[neonixie-l] Re: Constant current source design

rce, I would go with the very first option. On Friday, April 7, 2017 at 5:34:49 PM UTC-4, Paul Andrews wrote: > > Here is a link > <http://www.infineon.com/dgdl/Infineon-Application_Note_Applications_for_Depletion_MOSFETs-AN-v01_00-EN.pdf?fileId=5546d4624cb7f111014cd63d1a197d94>

Re: [neonixie-l] Re: Constant current source design

Well that makes me feel dumb (which is fine, I will learn)! I should have had the sense to calculate a suitable load value and I should read the data sheets more carefully! Hopefully my trial and error will be instructive to others as well as myself. I'll do it again with calculated load value

[neonixie-l] Re: Constant current source design

Hi (Greg?), Using the datasheet for the PMOS transistor you use in your circuit, how do you calculate the value of R116 (the resistor between +200V and the source of your MOSFET)? On Saturday, March 25, 2017 at 12:30:53 PM UTC-4, gregebert wrote: > > That's basically what I use in my designs. I

[neonixie-l] Re: IV-1 datasheet English translation

I 'paraphrased' much of the literal translation e.g. 'Max' instead of 'not greater'. The translator completely failed to translate Накала, though it gave the Roman alphabet equivalent of Nacala. From the context it was fairly clear that it is the filament, which I translated as heater. 'Incandes

[neonixie-l] Re: Shameless Plug: Arduino Shield for a Dekatron

Now I might have to buy a dekatron! On Wednesday, May 10, 2017 at 2:29:40 AM UTC-4, threeneurons wrote: > > If you're familiar with the Arduino, here's a shield that will plug into > an Arduino Uno, so that sketches can control the dekatron. It also has an > A101 socket built in. I have three sa

[neonixie-l] Re: "Firmware" must-have's / nice to have's

Can you blank the tubes in software? If so you could implement dimming in software, which is all PWM is. No need for a dedicated pin. I did this for an Arduino controlled clock kit I bought. There were no timers left, so I just kept track of whether the tubes should be on or off in the 'PWM' cyc

[neonixie-l] Re: Shameless Plug: Arduino Shield for a Dekatron

Will this work with OG-7? How will I socket it? On Wednesday, May 10, 2017 at 2:29:40 AM UTC-4, threeneurons wrote: > > If you're familiar with the Arduino, here's a shield that will plug into > an Arduino Uno, so that sketches can control the dekatron. It also has an > A101 socket built in. I h

[neonixie-l] Re: Shameless Plug: Arduino Shield for a Dekatron

wrote: > > > On Thursday, May 11, 2017 at 1:30:39 PM UTC-7, Paul Andrews wrote: >> >> Will this work with OG-7? How will I socket it? >> > > The OG-7 is a high speed tube. It has the OG-4 pin out. If you think of > the the OG-4 as being a Russian 6802, the OG-7 is

[neonixie-l] 'Tube socket pins'. What are they really?

Does anyone know what these are actually called so that I can find them on digikey or mouser? I assume that they are the female receptacl

Re: [neonixie-l] Re: "Firmware" must-have's / nice to have's

I had to fine tune how I was doing that to remove the flicker. I think it is caused by a beat between how often you go around the main loop and what you think the state of the tubes should be. You have to keep of an error term to keep track of the state you should be in. Anyhow it seems to work

[neonixie-l] Re: Tube testing?

bI/Ak8/8AUYQLBIo-snORJq5qGaq-qM4qxxgNDYACLcB/s1600/IMG_1445.JPG> Naturally, I played around with creating some sparks between the output leads after I removed the capacitor and resistor, but before I removed the leads :) Well, that's it, I've done it and can move on! On Satu

[neonixie-l] Re: HV control chips

t.com/-69Y3lM-8tV0/WRng5vVgrNI/AlM/VGEGP0nxUC8VglEv0N0Xnmp0f9d3CAUpACLcB/s1600/IMG_1471.JPG> On Tuesday, February 21, 2017 at 6:51:23 AM UTC-5, Paul Andrews wrote: > > Hi, > > I was following up on a discussion elsewhere which mention the HV5530 as a > control chip for Nixi

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