Re: [neonixie-l] Are numitron illegal in UK ???

['Mike Harrison' via neonixie-l]

On Thu, 13 Apr 2023 12:57:38 -0700 (PDT), you wrote:

>I tried to buy some IV-16 in a foreign country, far over the channel.
>here is the message I just received from ebay:
>
>Hello Benoit,
>
>The purchase you recently made under the International Delivery Service 
>with  could not be completed.
>
>The object in question has been restricted. This may be due to import or 
>delivery restrictions, or International Delivery Service eligibility 
>requirements. The item will not be sent to you, nor will it be returned to 
>the seller.
>
>Don't worry. You will be fully refunded to the payment method used to 
>purchase the item within 72 hours. We will make two separate refunds: the 
>first for the price of the object and the second for the shipping and 
>import costs. No further action is required on your part.
>
>[image: Sans titre.jpg]

There have been many reported cases of the Ebay shipping program destroying 
nixies and all sorts of
other tubes because they think they contain mercury, and can't be shipped by 
air. 

Never,  ever use Ebay's shipping service for any kind of tube. 

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Re: [neonixie-l] Re: DS3231 shortage

['Mike Harrison' via neonixie-l]

On Wed, 30 Nov 2022 13:59:46 -0800, you wrote:

>I can vouch for LCSC too...never had an issue with them and their prices
>are (usually) very good.

I've been using LCSC a lot in recent years, mostly  for parts that are 
unavailable elsewhere like
RS485 drivers, MOSFETs, LDO regulators and knock-off JST connector., 
The only  issue I've ever had were some 74HC595s that had some missing features 
- this was actually
shown in the datasheet, but I didn't think to look at the datasheet of a 74HC 
part!

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Re: [neonixie-l] Re: Label Makers

['Mike Harrison' via neonixie-l]

I use 2 - 
Brother P-Touch E300, as mentioned before, in the UK  this is sometimes on 
offer at Screwfix or
Toostation. if you're doing a lot, there is a next model up that can link to 
PC/phone which might be
useful

Zebra TLP2844 thermal transfer, for address labels etc. These are sold under 
different brands ( e.g
mine is a Panduit TDB43M), and often available very cheap used on ebay ( £50 or 
less) 

These do nice thermal-transfer onto paper or plastic labels, which are pretty 
durable. Lots of
generic labels and transfer rolls available for these
 

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Re: [neonixie-l] Nixie tube sighting on Amazon

['Mike Harrison' via neonixie-l]

On Sun, 20 Mar 2022 16:16:27 -0400, you wrote:

>Looks like a QS-something:
>
>https://www.amazon.com/Joytech-Tesla-Wireless-Transmission-Demonstration/dp/B08S399225?th=1
> 
>
>
and a rather dangerous UVC tube

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[neonixie-l] Burroughs self-scan display on ebay

['Mike Harrison' via neonixie-l]

I just listed this Burroughs self-scan plasma display
https://www.ebay.co.uk/itm/203867355983?hash=item2f7770fb4f:g:qcEAAOSwbIRiLiGF

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

['Mike Harrison' via neonixie-l]

I usually use JLCPCB and ALLPCB

On Thu, 23 Dec 2021 02:45:07 -0800 (PST), you wrote:

>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

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Re: [neonixie-l] Re: Vintage Electronic device with Nixies, need help identifying.

['Mike Harrison' via neonixie-l]

On Sun, 17 Oct 2021 12:14:33 -0700 (PDT), you wrote:

>
>Here it is plugged in and lit up. As far as I can tell, none of the dials 
>or buttons seem to change the display.
>On Sunday, October 17, 2021 at 12:13:11 PM UTC-7 Victor Dekhtyar wrote:
>
>> Hey all!
>> I recently picked up this device from a yard sale for $10. It's pretty 
>> rare to see nixie tube equipment in my area so it was an instant buy from 
>> me.
>>
>> The problem is I have no idea what this equipment does or what a dual 
>> preset controller is used for. The owner who sold it, also had no idea what 
>> it is. If anyone knows anything about this, info is greatly appreciated!
>>
>> Thanks.
>>

Looks like something that's designed to compare a count (or frequency) to two 
values entered on the
rotary switches below the display, maybe for some sort of industrial process 
control.

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Re: [neonixie-l] Re: Interesting all-transistor clock with analogue dividers

['Mike Harrison' via neonixie-l]

On Thu, 16 Sep 2021 02:58:59 -0700 (PDT), you wrote:

>I don't actually see any content here?


https://www.youtube.com/watch?v=Y5kkgO5MPIA

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[neonixie-l] Interesting all-transistor clock with analogue dividers

['Mike Harrison' via neonixie-l]

neonixie-l@googlegroups.com

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Re: [neonixie-l] Re: new giant tubes from Dalibor

[Mike Harrison]

On Sat, 4 Sep 2021 11:38:13 +0100, you wrote:

>Is there anybody making VFDs in small quantities ?
>I'm wondering if it's possible to make the anodes and pins on PCB material
>and just the grids and cathodes using the techniques from Nixies.

I think PCB material will outgas too much

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Re: [neonixie-l] Longines Nixie clock up for auction

[Mike Harrison]

On Tue, 26 Jan 2021 01:11:13 -0800 (PST), you wrote:

>Never seen this before.
>Longines Nixie clock 
>
>  
>
>[image: Longines.jpg]

There was one of these in the London Science museum for many years

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[neonixie-l] Fascinating film about 1960s colour CRT manufacturing

[Mike Harrison]

https://www.youtube.com/watch?v=7IrSLPVkxCo

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Re: [neonixie-l] Interesting clock....

[Mike Harrison]

On Wed, 18 Nov 2020 00:22:10 +, you wrote:

>That’s an awesome looking clock/idea.
>
>Ok, I put in my offer.  Will update if he accepts.

Cheaper on Aliexpress : 
https://www.aliexpress.com/item/1005001386199567.html?spm=a2g0o.productlist.0.0.286f391aUI5CaS_pvid=dcc89ea9-f490-4de0-8920-b39e7eb95cdd_expid=dcc89ea9-f490-4de0-8920-b39e7eb95cdd-0=2100bde316056600507791978e10ea_ab_test=searchweb0_0,searchweb201602_,searchweb201603_

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[neonixie-l] Faulty B-7971s

[Mike Harrison]

My listing - no idea if anyone has a use for bad B-7971's

3 of these have been running 24/7 as a clock for about 15 years, other was 
faulty when I got it

https://www.ebay.co.uk/itm/Burroughs-B7971-Nixie-FAULTY-x4-for-parts-display/202953903576

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Re: [neonixie-l] Re: New CD47 sized tubes?!

[Mike Harrison]

>US testing is quite different - different EMC limits (often simpler - you 
>dont test susceptability iirc, as if everything complies with radiated 
>emissions then why would there be a problem with received erronious 
>emissions?)

That is a common misconception - susceptibility testing is not about immunity 
to non-compliant
emitters, it is about immunity to radio transmissions. The levels are orders of 
magnitudes apart. 

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Re: [neonixie-l] Re: RoHS Certification of Nixie Tubes

[Mike Harrison]

On Wed, 8 Aug 2018 15:08:55 -0700 (PDT), you wrote:

>I agree. However, is the lack of enforcement, a good reason for 
>non-compliance?

Pragmatism. 
For something oddball like nixies, much easier to stay under the radar than 
start asking awkward
questions about mercury content. 

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Re: [neonixie-l] Re: RoHS Certification of Nixie Tubes

[Mike Harrison]

>I understand you point about liabilities, however aimed at hobbyist or not, 
>the clocks and tubes on the European market must be CE compliant. This 
>applies to manufacturers and to distributors of consumer electronics 
>products it is not just for industrial applications.

With all the blatently non-compliant and downright dangerous junk coming from 
China, nobody is going
to be interested in the infinitessimaly small trade in nixie tubes.


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Re: [neonixie-l] Re: Is this cool or what? Dalibor is up to no good ;-)

[Mike Harrison]

On Tue, 6 Feb 2018 16:05:23 -0800 (PST), you wrote:

>Lovely stuff. There are a lot of tubes involved in the project - if I 
>understand the annotations correctly, there are 12 instances with 60 tubes 
>and 12 with 10 - that's 840 tubes!
>
>Something about the write-up on the website looks a bit strange... It 
>claims that the artist fabricated the tubes - did he really go work in 
>Dalibor's lab for a few months to learn and make them? Or did he just pay 
>Dalibor to do it? In the latter case I think a slightly more accurate 
>description is needed...

You must be new to the art world... 
Do you think Damien Hurst picked that shark himself ? 

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Re: [neonixie-l] Re: mason jar numitrons

[Mike Harrison]

On Tue, 23 Jan 2018 12:46:28 -0500, you wrote:

> 
>
>> I realize the Arduino makes an easy target, but why the hate?
>
 It's not so much the Arduino ( though I don't have a lot of time for that, 
especially when it's the
first word of a project description), but the that you have this nice display 
with an ugly fat cable
going in to an ugly box. 

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Re: [neonixie-l] Re: mason jar numitrons

[Mike Harrison]

On Tue, 23 Jan 2018 10:05:38 -0700, you wrote:

>Also, does anybody know if these can be dimmed? I find them awfully 
>bright. Jens
>

Might look good in a heavily tinted glass.

"Clock in a bottle" might make an interesting challenge too...

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Re: [neonixie-l] Re: mason jar numitrons

[Mike Harrison]

On Tue, 23 Jan 2018 11:57:15 -0500, you wrote:

>Love this: https://youtu.be/JUFx7mmOjXw

very nice but pity about the Arduino. 


>Any idea if the wires can be soldered, or if they need to be spot welded?

yes they are solderable


>Also, does anybody know if these can be dimmed? I find them awfully bright. 
>Jens

Yes - you can run them at lower currents - you may start to get less uniform 
brightness at some
point, but you could PWM them

Typical spec is 55-60v forward voltage,. max current 10-15mA

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Re: [neonixie-l] Re: Not Nixie related but might be of interest. Large RGB Matrix

[Mike Harrison]

On Wed, 11 Oct 2017 16:24:09 -0700 (PDT), you wrote:

>
>Sent a query to Barco a couple of days ago... so far no response.

I wouldn't hold your breath. 
I found an installation manual but not much useful info 
ftp://ftp.folsom.com/Products/LED/Manuals/NX%20Rental%20installation.pdf

Super cheap though, and will probably be better quality than the cheap Chinese 
panels, though maybe
quite old. If they weren't in the US I'd get some to play with. 

I think you're going to need to pull it apart & reverse engineer it - could be 
you could seperate
the led_driver section from whatever handles the panel-to-panel comms - may be 
easier to figure out
how to drive. 

 If anyone gets some I'd be interested in getting hold of one to look at- 
postage on one shoudn't be
too bad. 

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Re: [neonixie-l] OT: Lateral thinking: Cheap SMT reflow oven...

[Mike Harrison]

On Mon, 14 Aug 2017 13:17:28 -0400, you wrote:

>> Is anyone here doing their own reflow-based SMT assembly ?
>
>I'm seriously considering it.  More and more parts are only available in SMT, 
>and it would be nice to do quick turn PCB assembly by milling a PCB then 
>assembling it.  Some parts are impractical to solder, while I haven't run into 
>much call for BGA parts, I do use a lot of things with thermal pads under them 
>that are tricky to hand-solder.

Even for bog-standard parts, if you have a lot of them ( maybe 50+)  reflow is 
easily way quicker.
Using a foot-operated vacuum pen, you can pick parts directly out of tape - 
particularly useful for
polarised parts so you don't have to check polarity of every one you pick from 
a random scattering
of loose parts.. 
For placing multiple parts from the same tape you can get down to 2-3 seconds 
per part.
The end result also looks nicer (assuming you stay on the right side of the 
line between "reflow"
and "incinerate".

Obviously use leaded paste, as the reflow/incinerate margin is much wider. 
If you have access to a lasercutter or vinyl cutter you can cut stencils, which 
saves even more
time, though a foot-operated dispener can be pretty qiuck - 1-2 dots per second 
once you get into a
rythm, and for stuff like SO packages you can just do a line long the pads. 
Even for fine-pitch
stuff, it;s often quicker to do a line then braid or drag-solder off the shorts 
it afterwards, or
just drag-solder them first


I did a video a while ago about this :
https://www.youtube.com/watch?v=pdGSFc7VjBE

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

[Mike Harrison]

On Wed, 19 Apr 2017 09:59:59 -0700, you wrote:

>You never stated what you think the minimum quantity is (at $25 per 
>unit) to start making money.
>
>
>On 4/19/2017 2:52 AM, Aiden Koh wrote:
>> I'm a product engineer taking on a new project.
>> With current manufacturing methods, I'm able to manufacture In-18/Z568M
>> inspired nixie tubes, at a fraction of their market costs (sub 25
>> USD/pc). I don't compromise on quality. hence, it will be built with
>> parts mostly sourced from the US, and have the quality management system
>> ISO-certified.
>>
>> However, due to overhead costs, such a price is only available if the
>> minimum demand for said tubes is reached. Hence I can only commence with
>> the project when I know that there is enough interest.

>> What are your thoughts? Would it interest you if such tubes exist? show
>> your support, and large, affordable nixie tubes may finally be within
>> our grasp!

Kickstarter.

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Re: [neonixie-l] Re: black box from Czech Republic

[Mike Harrison]

If you were to go bigger, you'd have to make them slightly bigger than the 
CD47, so you could claim the "biggest ever nixie" headline, which would be good 
for free publicity!


(Sent from phone.) Original message From: Dalibor Farný 
 Date: 21/01/2017  21:08  (GMT+00:00) To: 
neonixie-l@googlegroups.com Subject: Re: [neonixie-l] Re: black box from Czech 
Republic 
6-tube clock with CD47.. but where to place such a beast? ;-) I had a problem 
to find a place for clock with current tubes ;-)
On Sat, 21 Jan 2017 at 21:58, Nicholas Stock  wrote:
I'll second the CD47'sbigger is better! :-)

Sent from my iPhone
On Jan 21, 2017, at 12:51, 'Terry S' via neonixie-l 
 wrote:

Congratulations Dalibor. I hope you build a Nixie Empire and part of that 
should be CD47s and Pandicons! Good luck.

Terry

On Saturday, January 21, 2017 at 10:33:54 AM UTC-6, Dalibor wrote:Guys, I've 
been making profit since beginning - my wonderful job is the profit! What 
better stuff can one trade for money? ;-) Seriously, we finally got to black 
numbers in 2016, using all the profit for improving the processes here and 
development of new things!
Dalibor

On Friday, 20 January 2017 21:33:26 UTC+1, gregebert  wrote:1300 of 
them..truly amazing. I hope Dalibor is finally making a profit on his hard 
work.
In case any of you missed it, this is a must-see video of Dalibor's nixie 
productionhttps://www.youtube.com/watch?v=wxL4ElboiuA






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Re: [neonixie-l] Neon Signs

[Mike Harrison]

On Fri, 13 May 2016 09:02:52 +1000, you wrote:

>Sorry if this is the wrong group. I have been offered a large quantity of
>vintage neon tubes from old signs, "burgers", "restaurant" "cafe", that
>sort of thing, together with straight & curved lines. How do I find out the
>value? I can test them.

there's a pretty thriving market for these as decorative items - try ebay 
completed listings for a
start

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Re: [neonixie-l] Re: Neon exhibition in London, Jan 14th...

[Mike Harrison]

On Thu, 14 Jan 2016 05:20:34 -0800 (PST), you wrote:

>Couple of rather poor photos - not allowed to take photos in the 
>exhibition, but can do through the windows...
>
>Huge amount of work to make that lot - couldn't get an image of what's on 
>the floor - some pure neon in there, but mostly 
>Ar-filled/Hg-doped/Phosphor-coated tubes...
>
>Private viewing with the artist & fabricator is tomorrow night... hopefully 
>I'll be allowed to take some proper photos...
>
>Nick

Also, Lights of Soho has an exhibition of Chris Bracey's work - I think til end 
of Jan 

lightsofsoho.com

If you're ever anywhere Walthamstow, God's Own Junkyard is worth a visit 
http://godsownjunkyard.co.uk/

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[neonixie-l] Boat-anchor in Uk with edge-lit filament displays

[Mike Harrison]

(not my listing)
http://www.ebay.co.uk/itm/DM-2000-Mk-2-Vintage-Digital-Volt-Meter-/321818031451?hash=item4aedd9755b

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Re: [neonixie-l] Crazy nixie hater

[Mike Harrison]

On Thu, 19 Jun 2014 17:36:49 +0300, you wrote:

https://www.youtube.com/watch?v=_8fCdExID8QNR this is awful :(

He needs to microwave that crappy camera and get something better.

and that wasn't an HD widescreen microwave either..!

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Re: [neonixie-l] Erratic Harrison clock

[Mike Harrison]

On Mon, 17 Mar 2014 07:44:03 -0700 (PDT), you wrote:

Actually, there's a Microchip app note, that describes the very same 
technique. Personally, I don't like using it. I have a lot of respect for 
Mike Harrison. He's a real sharp guy, and I'm really thankful for his 
website ! As Nick mentioned, this is a really old design, and Mike just 
probably whipped it up, quickly. He probably never imagined that nixie 
tubes would become as big as a fad, as they are. He might have designed it 
differently, had he known that more people, than just other geeky 
engineering types, would be trying to build it. I got into the nixies, in 
the summer of 2003, and the hobby (and this clock design) had already been 
in existence a few years. Who knew, it would have this staying power !?

On Monday, March 17, 2014 1:11:15 AM UTC-7, petehand wrote:

 On Sunday, March 16, 2014 10:41:54 PM UTC-7, threeneurons wrote:

 This circuit uses high value resistor, and *lets the 4013's static 
 protection, clamp the voltage*.


 Surely you cannot be serious! 

 Haha, threeneurons, you had me there. For a moment I actually believed 
 someone might be ignorant enough to do it that way.



Yes, it can cause minor  issues on microcontrollers with analogue circuitry due 
to current flowing
in paths that can cause unwanted offsets, but for simple logic, provided that 
the source current is
sensibly limited, it generally works just fine, though probably a good idea to 
use it on a schmitt
trigger input to guarantee a clean switch. I only recall a couple of reports of 
erratic timing over
the years. 
 A large (few meg) resistor between S and Q might help by adding some 
hysteresis.

Yes, it was designed pretty quickly, and there are other aspects of that 
15-year-old design I
certainly would do differently, like the dodgy, timing-sensitive hours reset 
logic, having the
seconds dividers in the wrong order and the slow time-setting, but the mains 
supply and 50Hz input
would be low on the list of changes. I like the lack of a lumpy mains supply, 
which allows for some
very compact constructions. 

I might  have published an alternate LVAC or DC+xtal option as alternatives if 
I'd realised how
popular it would become. 

The original goal was something small, simple and not using a microcontroller, 
which  at the time
was relatively expensive, and needed a programmer, which many people wouldn't 
have had.

My biggest regret is that I didn't buy a big stock of tubes *which were going 
for peanuts at the
time) to do some kits, or sell PCBs.
  

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Re: [neonixie-l] Re: Royworld

[Mike Harrison]

On Sun, 2 Feb 2014 10:53:49 +, you wrote:

On 30 Jan 2014, at 22:01, Jeff Thomas wrote:

 On Thursday, January 30, 2014 1:36:21 PM UTC-7, Nixcited delighted wrote:
 Anyone come across Royworld before? Modern beat combo - found them by 
 complete accident. 
 
 Nice to see another NixiSat has surfaced.  For the newer members, the 
 NixiSat was my first commercial GPS referenced clock from 2002, and used 
 Z568 nixies.

Not quite - I supplied them with this - it's one of your boards with some 
firmware I wrote to do a
countdown clock as part of a fake bomb type prop :

http://cdn2.thelineofbestfit.com/pictures/2008/06/royworld.jpg

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[neonixie-l] Sidelit displays - Wales UK

[Mike Harrison]

Spotted this - not my listing. 

http://www.ebay.co.uk/itm/Vintage-Digital-Voltmeter-Type-DM2022S-/230964182288?pt=UK_BOI_Electrical_Test_Measurement_Equipment_EThash=item35c689bd10

I Reviewed one of these a while ago : 
http://www.youtube.com/watch?v=4xrcBoe_x04

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[neonixie-l] Ebay clearout - large 8091 nixies, very rare projection displays, numitrons,dekatrrons

[Mike Harrison]

Having a bit of a clearout : 

8091 large end-view nixies
http://www.ebay.co.uk/itm/200882231325

Very rare projection display : 
http://www.ebay.co.uk/itm/200882245173

Everything else : 
http://www.ebay.co.uk/sch/mikeselectricstuff/m.html

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Re: [neonixie-l] Piezo amp

[Mike Harrison]

On Tue, 15 Jan 2013 09:59:46 -0800 (PST), you wrote:

Also, is there any need to protect the controller pin from the voltage 
spikes? And what about current draw, should I put a resistor because of the 
inductor, or can I expect small currents?

No - the small high-value inductors have typically hundreds of ohms of series 
resistance so no smoke
if the transistor turns on continuously

the transistor base resistor won't pass enough current to damage the MCU. 


 Put a  10-100millihenry Inductor across piezo  ( you can get some very 
 cheap axial ones), and drive 
 withan open collector transistor, Note that  disconnecting the piezo will 
 produce a high voltage 
 that may kill the transistor unless you use a HV transistor like MPSA42,. 
 if the piezo is solidly 
 connected you can usually use a bog-standard NPN as the piezo will limit 
 the voltage. 
 Also remember that piezos are sharply resonant so tweaking the frequency 
 for loudest output makes a 
 big difference, regardless of how you drive them. 


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Re: [neonixie-l] Re: What's that????

[Mike Harrison]

On Fri, 28 Dec 2012 11:30:04 -0800 (PST), you wrote:

Hi there, i found an interesting book on ebay, i dont know its its good or 
rare, but i though some of you might like it. 
http://www.ebay.com/itm/Counting-Tubes-Theory-and-Applications-by-Curran-and-Craggs-Butterworth-Scienti-/150971470527?pt=US_Nonfiction_Bookhash=item232699d2bf

On Wednesday, 29 August 2012 19:42:57 UTC+1, Nocrotec wrote:

 http://www.ebay.com/itm/ws/eBayISAPI.dll?ViewItemitem=150890331475 
 I never saw that book. 
 88 pages? A joke, or what. 
 Dieter 



Yes it is a joke - it's just a bunch of Wikipedia pages printed into book form 
- total rip-off from
a bunch of scammers called Alphascript/Betascript. 
I got something similar from Amazon on a different subject a while ago - sent 
it back for a refund. 

http://www.chrisrand.com/blog/index.php/2010/02/27/odd-tale-alphascript-publishing-betascript-publishing/

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[neonixie-l] Projection displays hidden in big ebay load - stockport UK

[Mike Harrison]

http://www.ebay.com/itm/190744054939
Last picture - two Dynamco DVMs with projection displays. Also at least one box 
with nixies 

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[neonixie-l] side-lit displays going cheap ebay UK

[Mike Harrison]

Not my listing - just spotted it

Item 261105444127

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Re: [neonixie-l] Re: side-lit displays going cheap ebay UK

[Mike Harrison]

On Sun, 30 Sep 2012 09:54:50 -0700 (PDT), you wrote:

Nice find! Do you know how much do they usualy sell for?

I'd normally expect a block like that to fetch £75-100

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Re: [neonixie-l] Re: OT: fantastic mercury arc rectifier to get

[Mike Harrison]

On Sat, 16 Jun 2012 01:49:08 -0700 (PDT), you wrote:

I, too have messaged the 'seller' - 
   Notice the blue glow in the picture that indicates the rectifier is 
under load at the time of the photo, which wikipedia has as 2005.
   We should report this before it ends, eh?

   -

Also says 48 diameter  x 36 high - sounds more like a steel tank than a glass 
bulb, unless that
includes the arms and crate...

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[neonixie-l] Sony Jumbotron CRT module teardown

[Mike Harrison]

Teardown of an old Sony Jumbotron module, using flood-beam CRTs :

http://www.youtube.com/watch?v=AclwH64eAkU

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