Re: [neonixie-l] Driving IN-13's with an optocoupler and PWM from an Arduino.

2013-03-07 Thread John Rehwinkel
> As of this moment I am not using any sort of filtration Just a simple > Current sink driver as the first scenario described here > http://www.die-wuestens.de/iz/IN9-2.pdf > Any help in designing or implementing someone elses design would be much > appriciatied. That's a valid design, but it

Re: [neonixie-l] Burroughs 8037 / B-5031 question.

2013-03-07 Thread Michael Gregg
Maybe you have the polarity backwards? Switch the positive and negative leads. I've seen this before, but I cannot remember the solution. Michael- On 03/07/2013 01:09 PM, hansi wrote: > Hi > > I am new to this group. and i rely like the polite and kind conversations. > > I bought some Burroughs

RE: [neonixie-l] Re: NL7094 is a myth!

2013-03-07 Thread Tidak Ada
Hi John, Can you mail me as schema and eventual obligatory information ? Want to build one for a grandchild. eric -Original Message- From: neonixie-l@googlegroups.com [mailto:neonixie-l@googlegroups.com] On Behalf Of John Rehwinkel Sent: donderdag 7 maart 2013 18:09 To: neonixie-l@googl

[neonixie-l] Re: NL7094 is a myth!

2013-03-07 Thread MichaelB
About 3 years ago, I have 6, however 2 are dark smoked glass. Would really like to exchange these for clears. Maybe someday I'll build a clock with these if I can't 2 more clears On Thursday, March 7, 2013 8:56:06 AM UTC-8, kay486 wrote: > > Whoah, you say that the F9020AA show up from time to t

[neonixie-l] Re: NL7094 is a myth!

2013-03-07 Thread MichaelB
Nick, email me if you would consider parting with some of them! I REALLY want to build a clock using these bad-boys. On Thursday, March 7, 2013 5:47:13 AM UTC-8, Nick wrote: > > I have a few - both NL-7094 & B7094, some NIB. > > They are indeed rare - I haven't seen any in the last few years, but

[neonixie-l] Re: NL7094 is a myth!

2013-03-07 Thread kay486
Well, i think that somebody here should have the means to refill it pretty soon (even with mercury)! Re-pinch the leads and you should be good to go. I think it would be worth it with tube like this! I wonder, do you know where these tubes were originaly used? On Thursday, 7 March 2013 20:03:40

[neonixie-l] Re: NL7094 is a myth!

2013-03-07 Thread threeneurons
I have a F9020AA. Unfortunately, its a dud. No Gas. :o( On Thursday, March 7, 2013 8:56:06 AM UTC-8, kay486 wrote: > > Whoah, you say that the F9020AA show up from time to time? I havent seen > any availible yet. Do you know when they sold and what was the pirce? > > -- You received this mess

Re: [neonixie-l] Re: NL7094 is a myth!

2013-03-07 Thread John Rehwinkel
> Well, it's never too late to become a radio amateur! With the removal of the > morse code requirement for all license classes, it's really just a practical > engineering written test. A fairly simple one at that. Yeah, I got licensed in 1999, when there was still a vestigial Morse code requir

[neonixie-l] Re: NL7094 is a myth!

2013-03-07 Thread kay486
Whoah, you say that the F9020AA show up from time to time? I havent seen any availible yet. Do you know when they sold and what was the pirce? On Thursday, 7 March 2013 03:57:14 UTC, MichaelB wrote: > > OK, so this hobby has been an obsession of mine for about 8 years now (no > where near as lon

Re: [neonixie-l] Re: NL7094 is a myth!

2013-03-07 Thread Adam Jacobs
Well, it's never too late to become a radio amateur! With the removal of the morse code requirement for all license classes, it's really just a practical engineering written test. A fairly simple one at that. Really, it is a little sad to say that a ham radio license doesn't imply the same leve

Re: [neonixie-l] Re: NL7094 is a myth!

2013-03-07 Thread Nick
I have 2, NIB. The thing is, although I'm heavily into tube audio, I have never been into high power RF - I have built a few low-power AM & FM xmtrs, but I'm not a radio amateur. There are some that have built audio PAs with these tubes - I just like the look of them ! Nick -- You received

Re: [neonixie-l] Re: NL7094 is a myth!

2013-03-07 Thread Adam Jacobs
That is one cool power tetrode you've got there, Nick. The datasheet alone would make me want to build a linear amplifier around it if I had one. 500w CW at up to 60mhz and 335w to 175mhz? I have no idea how difficult it is to tame the self-oscillations at the higher frequencies on that tube, b

[neonixie-l] Re: NL7094 is a myth!

2013-03-07 Thread Nick
...bit more on this - many years ago I went a bit mad and bought a large quantity of tubes, many in big batches where there might have been a tube or two of interest. I bought one batch simply because I saw "NIB 7094s" mentioned in the list - turned out they weren't quite what I expected - they

[neonixie-l] Re: NL7094 is a myth!

2013-03-07 Thread Nick
I have a few - both NL-7094 & B7094, some NIB. They are indeed rare - I haven't seen any in the last few years, but there again, I'm not buying any more nixies so not looking... Bought mine probably 10 years or more ago. If anyone needs photos, let me know... Nick -- You received this messag