[neonixie-l] Re: How ICs are made - the inside track...

1985 was my 'golden year' as well. Started work at TRW doing 2 micron CMOS design for the Milstar program. Several of those birds are still in orbit, and with several of the ICs I worked on. That old technology sure is rugged. At some point, the process technology: - Doesn't result in

Re: [neonixie-l] NL 7094

Yeah I saw that, but I swear I had nothing to do with it :D Cheers Jens On 1/23/2017 9:44 PM, Alic wrote: There was one on the German eBay a few months ago. It was sold as untested. Unfortunately I completely underestimated the price! http://r.ebay.com/ekycH0 -- You received this message

Re: [neonixie-l] NL 7094

There was one on the German eBay a few months ago. It was sold as untested. Unfortunately I completely underestimated the price! http://r.ebay.com/ekycH0 -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop

Re: [neonixie-l] Re: Interested in B7971

Well, about $350 for the tubes. The boards aren't worth much at all except for the sockets. Maybe $10 each (socket). I have about 25 complete boards. Have caught the wife trying to throw them away several times. I fear she might succeed some day. Michail In a message dated

RE: [neonixie-l] Re: Interested in B7971

me too. ultronics board and 2 7971 from BA. still have two complete boards (4 tubes). what are they worth now? Clarke Sent from Verizon Note 2 On Jan 23, 2017 10:58 PM, "Jeff Walton" wrote: I paid about $8.95 for two B7971 tubes and the Ultronics display board. I

RE: [neonixie-l] Re: Interested in B7971

I paid about $8.95 for two B7971 tubes and the Ultronics display board. I bought them as surplus from Burnstein-Applebee in 1972. I only bought (8) at the time for a single clock project. I wish I had bought and stored more of them. They seem to be about $80-$100 each on ebay today... My

Re: [neonixie-l] Re: Interested in B7971

Come on Chuck, don't rub it in;-) 11 dollars a piece! I wish! Going price on the bay is about 100 dollars a tube currently. Sometimes less, sometimes a little more. I've managed to pick some up for about 60 dollars a piece on eBay, and that was a good day, but those days are long gone

Re: [neonixie-l] Interested in B7971

Hello, Just as an option in case you didn't find a good deal and you don't want to wait to pick them off of ebay, I will sell for $125 each + shipping. I have plenty. Michail In a message dated 1/21/2017 3:56:24 P.M. Pacific Standard Time, luka.culic.visk...@gmail.com writes: I'm

[neonixie-l] Re: Wifi adapter for NCS314

Hand drawn. Hopefully you can read it. It is pretty straight forward: The rectangle on the left is a 4 channel level converter. I use this one

[neonixie-l] Re: How ICs are made - the inside track...

In 1985, shortly after, I got out of school, they just broke the 1 micron barrier. I think wafers were ~5" (~130mm). >From the few people I've known, that were in the semi business, they change "mask sets" for parts routinely, for an existing part. This is due to keeping up to the current

[neonixie-l] my version of nixie tube testing device...

My supply only generates about 320 volts dc, it uses a miniature one turn 100 Kohm variable resistor for current limiting and I put 2 leads with 0.1mm post sockets at the ends to push onto tube leads. Uses as I said either 1 1/2 volt or 3 volts as 1 or two AA or AAA batteries (comes in two

[neonixie-l] Re: IN-13 Lifespan

A couple of data points, but by no means statistically significant. I've had an IN-13 running in my nixie thermometer (pre-kit) for close to 2 years, now, 24/7, and it runs and looks like new. One of my TRW buddies has a simple "winker", that uses the IN-13. It still glows and winks, but its

Re: [neonixie-l] Re: IN-13 Lifespan

I too want to see the results of the post mortem. What IS the mechanical reason for the spacer being free? Please tell. John K - Original Message - From: Jon To: neonixie-l Sent: Tuesday, January 24, 2017 8:27 AM Subject: [neonixie-l] Re: IN-13 Lifespan Sounds like a

Re: [neonixie-l] IN-13 Lifespan

But, if you get the maths right you can actually mimic the response. [I have audio and broadcast radio station background btw] Been here before with this argument of course. So, it is possible to get the same indication but that leaves the semantics to deal with. And there are subtle aspects of

[neonixie-l] Re: Scope Clock using an Arduino Due

Bravo Grahame - lovely stuff! > 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+unsubscr...@googlegroups.com. To post to this group, send an

Re: [neonixie-l] NL 7094

Well I think it depends. I think it is also important to preserve some tubes for future generations ;) Best wishes Jens On 1/23/2017 6:27 AM, 'Terry S' via neonixie-l wrote: Agree. There is no joy in an un-lit nixie. Build stuff. Terry On Sunday, January 22, 2017 at 3:10:56 PM UTC-6,

[neonixie-l] Re: IN-13 Lifespan

Sounds like a good excuse for a tube autopsy... If you are indeed over-driving the current then you'll be sputtering material off the cathode which after a while will have two effects. Firstly there will be some gradual darkening of the tube as the material deposits elsewhere. And secondly

[neonixie-l] Re: Scope Clock using an Arduino Due

Grahame, Drool! When I finish making all my Nixie clocks that is going to be a project well worth doing (as long as my wife does not see it!). I have 1 to finalise and a few more in progress then the shed will be ready for something new. Could combine it with a nixie clock and have the CRT

[neonixie-l] Re: IN-13 Lifespan

If the op-amp is running on a +5V supply, the maximum possible current in the IN-13 is about 20mA per the schematic. But if the op-amp runs off the +12V supply, you could get up to 50mA . I think IN-13's are rated for 4.6mA full-scale, so either way you could be overdriving it. -- You

Re: [neonixie-l] IN-13 Lifespan

As far as I know, one can NOT build a bar-graph, or neon lamp style, LED, or any other indicator type, of VU meter. (Perhaps you built a 'level indicator' of sorts.) The very definition of a VU meter (at least the professional type) involves the mechanical ballistic damping, and mechanical

Re: [neonixie-l] Re: Tube testing?

Neon/fluorescent bulb testers are readily available NIB on Ebay for $9-$10 (from Chine where else??). Just type in "fluorescent bulb tester". All it will tell you though is whether it is out-gassed or not. Ira. On 1/23/2017 11:47 AM, Paul Andrews wrote: Hi Phil, Is your tester anything

[neonixie-l] Re: Tube testing?

Hi Phil, Is your tester anything like this one ? I would love to make one, though that isn't what I was asking about! - Paul On Saturday, January 21, 2017 at 10:12:25 AM UTC-5, Paul Andrews wrote: > > Hi, > > I received a shipment of

[neonixie-l] IN-13 Lifespan

About 1.5years ago, I built this really nice stereo vu-meter using IN-13 bargraph tubes. About two weeks ago, one of the tubes made a "tink" sound and the current control went away -- the tube stayed ignited, but the "bar" was stuck at the bottom. I noticed that the spacer at the far end of the

[neonixie-l] Re: Interested in B7971

When I built the (16) driver boards for the B-7971 array, I used the little 4 inch square cards from Radio Shack which have the 22/44 edge connector. Built (2) card cages for them. Each cage holds (8) cards. Used 22/44 female edge connectors with wirewrap pins. Chuck > > > Original

Re: [neonixie-l] Re: Interested in B7971

I still have a few original driver boards for b7971. I could try to post a photo if anyone interested. -- 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

Re: [neonixie-l] NL 7094

Agree. There is no joy in an un-lit nixie. Build stuff. Terry On Sunday, January 22, 2017 at 3:10:56 PM UTC-6, Pramanicin wrote: > > I get that Jens, but eventually they will fail...maybe not in 10 or 20 > years, but eventually they will de-gas...? I'm a believer in enjoying them > whilst you

Re: [neonixie-l] NL 7094

I like to have them in clocks, but I like to have a few backups lying around too, for when they start to fail. Which reminds me, I need to buy some backups! I don't want to give the wrong impression though. It is early days so I only have IN14, IN8-2 and Z5900M. -- You received this message

[neonixie-l] Scope Clock using an Arduino Due

Hi All http://www.sgitheach.org.uk/scope3.html Enjoy! kits for sale 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] Re: Wifi adapter for NCS314

Paul, can you post a schematic? -- 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