There's another nice datasheet with a lot of information here: https://static1.squarespace.com/static/5f0983034219c6086e8100ac/t/5f4566168ede3e5edceb395e/1598383652854/439A.pdf
@mjrippe: If my mind doesn't play tricks on me I think I got some Telephone related patents from you after you mentioned them in this thread where I asked for help to get my 6167/WE439A to run: https://groups.google.com/g/neonixie-l/c/xn7QcomQZSg /Martin On Friday, 25 February 2022 at 18:08:14 UTC+1 mjrippe wrote: > >I wish we knew which device used W.E. 6167 dekatrons so that we could > have a look at the diagram... > > Hi Paolo, > > I did some research on these tubes about a decade ago. There was not much > info available, perhaps more to be found now. Here is the one use case I > did find - good luck finding out more! > > From AAFM Vol. 6, No. 1 March, 1998 (Association of Air Force Missileers) > > Origin of the Ground Guidance System The Titan I > guidance system was developed by Bell Telephone Laboratories > (BTL). It started as a WW II shipboard radar, > built by Western Electric Company, and grew to include > an analog guidance computer for guiding early experimental > rockets and the Nike-series missiles. The analog > computer used two large motor-driven oil-filled sinecosine > potentiometers and lots of op amps to generate > the guidance equation. A bank of ten turn > potentiometers provided variables to the guidance > equation, so that roll-over and changes in acceleration > could be programmed. The whole thing was sequenced > by some little Western Electric 6167 ten-step pixie tubes. > It used electron tubes, for this was before the proliferation > of the transistor, and mean time between failures was > acceptable for that era, but short. > > > Yours, > Mike > > On Thursday, February 24, 2022 at 6:58:00 AM UTC-5 Paolo Cravero wrote: > >> On Wed, Feb 23, 2022 at 11:04 PM Jon <[email protected]> wrote: >> >> Thanks to Martin, Eric and Jon for their answers. >> >> However, if I understand Paolo's post, he's using Mike Moorrees's circuit >>> (https://threeneurons.files.wordpress.com/2011/09/we6167ckt.gif) which >>> leaves the auxiliary anode disconnected. When I ran 6167s in this >>> configuration they were generally much more reliable in not sticking on >>> K10, though I was using rather different circuit conditions: >>> >>> - Va = +400V with respect to main cathodes >>> - Transfer pulses 60V amplitude from a resting bias +30V with >>> respect to main cathodes >>> - Anode current 1.3mA >>> >>> >>> Paolo, can you confirm you have indeed left pin 5 unconnected? >>> >> >> Yes, I confirm I used that circuit from A to Z. Then I varied the bias >> voltage and/or anode current (up to 1.5 mA), but both auxiliary anode and >> reset were floating. >> >> I will rebuild the test setup with an external power supply that can >> provide more current, as the LM393 booster is struggling with 2 mA at 400+ >> V, and use zeners to derive the bias. According to Jon's list, a starting >> point for voltages should be: >> >> - main cathodes +30V, >> - transfer pulses from +60V to 0V, >> - main anode at +430V; >> - K10 current at 2mA which brings >> - auxiliary anode at +115V (datasheet PDF, 4th page) >> >> I wish we knew which device used W.E. 6167 dekatrons so that we could >> have a look at the diagram... >> Paolo >> >> -- 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 [email protected]. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/ba9e2178-133d-4456-b83f-a07effbbfba7n%40googlegroups.com.
