[neonixie-l] GN-4 tubes
Anybody know where to get hold of some GN-4 tubes for a reasonable cost? 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+unsubscr...@googlegroups.com. To post to this group, send an email to neonixie-l@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: [neonixie-l] Re: Circuit diagram for the Russian A-201 polyatron?
Hi Marcin, Excellent! Thank you for the translation! /Martin On Monday, February 18, 2013 2:05:32 PM UTC+1, marcin wrote: Hi Martin here is translation of the page from Jon. First original with Russian OCR, then my very, very crude translation. The other pages will follow soonish. Konstantin, thanks for the hint about Finereader. It does excellent job with Russian OCR! Marcin On 16/Feb/13 23:01, Dekatron42 wrote: Hi Marcin, It would be very kind of you if you could have them translated and if possible add a small dictionary with the most common words used, then I can probably read and understand other datasheets a little bit more easily in the future. I've added one more A201 page that I got from Jon here at the forum a few days back, can you have a go at translating that one too please? /Martin On Saturday, February 16, 2013 10:39:11 PM UTC+1, marcin wrote: No, I don't. But if you want it I will translate, my Russian is good enough. And I have a Russian colleague temporary working with me. 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 javascript:. To post to this group, send an email to neoni...@googlegroups.comjavascript:. To view this discussion on the web, visit https://groups.google.com/d/msg/neonixie-l/-/kMd_k2-Kk78J. For more options, visit https://groups.google.com/groups/opt_out. -- 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.com. To view this discussion on the web, visit https://groups.google.com/d/msg/neonixie-l/-/boa35iwdqdcJ. For more options, visit https://groups.google.com/groups/opt_out.
Re: [neonixie-l] Re: Circuit diagram for the Russian A-201 polyatron?
Hi Marcin, I actually found one source which confirms the use of the screen (grid or trigger electrode) in multiple-anode cold cathode tubes for just that purpose! The article is named A study of coding with multiple-anode glow discharge tubes and was published in The Radio and Electronic Engineer September 1964: http://ieeexplore.ieee.org/xpl/login.jsp?tp=arnumber=5266726url=http%3A%2F%2Fieeexplore.ieee.org%2Fiel5%2F5266378%2F5266723%2F05266726.pdf%3Farnumber%3D5266726 . Note that the article does not speak about counting tubes, just trigger tubes with multiple-anodes. The article is written by H.E. Seifert which also wrote an article on the glow-thyratron, the Cerberus GT21 (also Mullard Z865W) which is used together with the GCA10G/GSA10G /Z572S/Z573C) as coupling tubes. There they show a way of using multiple-anode trigger tubes to do coding/decoding of signals where the anodes from more than one trigger tube is connected together and the screen/grid electrode from each tube is used to do the coding/decoding by switching on the requird trigger tubes as needed. The trigger tubes and Nixie are driven by half wave rectified AC voltage which means that the trigger tubes switches off when there is no voltage across them and the Nixie, they would have stayed on if they were driven by DC voltage until the DC voltage had been removed. The article ends with a picture showing a combined tube which involves both the trigger tubes and the indicator part, which looks like a 7-segment display! I know I have seen a patent with that type of tube but I can't find it right now. Last summer I wrote about two patents covering combined units with Nixie displays and a control unit which was either a Dekatron (the German patent) or a set of trigger tubes (the French patent by Elesta) here: https://groups.google.com/forum/?fromgroups#!searchin/neonixie-l/combined$20dekatron/neonixie-l/VScgxdUDZ6E/IfvX3761DhoJ , looking at the French patent it is using a grid to control the electrode structure to allow different figures to be display. I haven't checked the English translation of this patent fully but what I checked talks about a design that uses a trigger tube with control electrodes - grids. I'm not sure if all of this is applicable to the A-201, but it is fascinating nonetheless! /Martin On Sunday, February 17, 2013 8:57:45 AM UTC+1, marcin wrote: On one Russian forum, sorry didn't save the source, one guy claimed the screen function is to quickly blank the connected nixie. Marcin On 16/02/2013 23:59, Jon wrote: The most curious thing about the A201 is pin 9, whose function translates as 'screen' or 'shield'. It's not shown in use on any circuit diagram I've seen for this tube. The only other counting tube I'm aware of with such a structure is the G10/241E Nomotron (and of course the 11TU7 lookalike). The datasheet for that also does not discuss the function, but specifies that it be set at a +90V bias. J B Dance (Electronic Counting Circuits) suggests that the purpose of the shield is to confine the glow to the required part of the tube. It could well be a similar function for the A201. In the polyatron configuration, unlike the dekatron, the discharge glow is associated with the common electrode rather than the electrode which is spatially specific for each counting position. This may mean that additional measures like the shield are required to stop the glow spreading across the common cathode and degrading the counting performance. It's interesting that Marcin's datasheet says that the glow is purple, whereas every A201 I've ever seen is neon-orange... Jon. -- 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 javascript:. To post to this group, send an email to neoni...@googlegroups.comjavascript:. To view this discussion on the web, visit https://groups.google.com/d/msg/neonixie-l/-/7XzdWqtrjsUJ. For more options, visit https://groups.google.com/groups/opt_out. -- 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.com. To view this discussion on the web, visit https://groups.google.com/d/msg/neonixie-l/-/IGJoZiGw7AkJ. For more options, visit https://groups.google.com/groups/opt_out.
Re: [neonixie-l] B7971 tubes
I have a few very cheaply made Chinese nixies that work very well when everything is right with them. Very nice tubes really. But, a couple of them lit up all kinds of stuff right out of the box and... tap...tap...tap...(with a finger) then tried it again and problem solved! :) Chuck Original Message From: micha...@aol.com To: neonixie-l@googlegroups.com Subject: Re: [neonixie-l] B7971 tubes Date: Mon, 18 Feb 2013 01:22:26 -0500 (EST) Yes, I have a couple of those left, although experienced several. one was solved with slight bumping. I was told that you could try to send extra power to hopefully break the bond between the two. Don't have a real solution, but have seen it several times. I believe I have 3 with this issue. Michail In a message dated 2/17/2013 10:19:21 P.M. Pacific Standard Time, nickst...@gmail.com writes: Has anybody else on this list encountered a B7971 that illuminates multiple segments upon testing when only one pin is energized (i.e. an apparent internal short)? Are there any remedies to this? 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+unsubscr...@googlegroups.com. To post to this group, send an email to neonixie-l@googlegroups.com. For more options, visit _https://groups.google.com/groups/opt_out_ (https://groups.google.com/groups/opt_out) . -- 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.com. For more options, visit https://groups.google.com/groups/opt_out. $4.95/mo. National Dialup, Anti-Spam, Anti-Virus, 5mb personal web space. 5x faster dialup for only $9.95/mo. No contracts, No fees, No Kidding! See http://www.All2Easy.net for more details! -- 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.com. For more options, visit https://groups.google.com/groups/opt_out.
