Wow, Martin! Your memory is much better than mine ;) I just had another look through my old files and the patents were in my Nixie folder, not the Dekatron one. I have uploaded a small collection to my DropBox: https://www.dropbox.com/s/gtxboyvkna7j8dt/6167%20Docs.zip?dl=0
Yours, Mike On Friday, February 25, 2022 at 2:52:12 PM UTC-5 Dekatron42 wrote: > 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 <deka...@nomotron.com> 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 neonixie-l+unsubscr...@googlegroups.com. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/3fb123b4-fa8b-4dd0-8496-570bea81a68bn%40googlegroups.com.
