Hello Duncan, Interesting projects.
About those Russian rod-gridded tubes I will refer you to TCA-member [ [email protected] ] Joe Sousa (MIT). He did a lot of research on these tubes. His reports are also published at Radiomuseum.org [ https://duckduckgo.com/?q=radiomuseum.org+english+language&hps=1&atb=v261-1&ia=web ] I had plans for a clock with moving coil meter readouts, but I stopped after calculating the power consumption of the project. Intention was to start with a TC X-tal oscillator (400kHz) then count down with dekatrons to the 0,1Hz region. Then a clock counter with a D/A converter to the meters. Unfortunately, the power consumption is irresponsible, especially in this time of scarcity and hi prices in Europe. Success! eric (Tidak Ada) -----Oorspronkelijk bericht----- Van: [email protected] [mailto:[email protected]] Namens Duncan Townsend Verzonden: zondag 21 augustus 2022 3:53 Aan: n, the [email protected] Onderwerp: [neonixie-l] Self-introduction & tube trading Hello everybody! I'm Duncan, an American software engineer by day and vacuum tube enthusiast when I'm not distracted by other things. I have an unreasonable number of pokers in the fire right now, but they include: * a clock based on each of J.B. Dance's Electronic Counting Circuits chapters (how low can I get the active part count without involving silicon components?) * tuning fork timebase for the above clocks * 1j24b (Russian subminiature rod pentode) CPU * 1j25r (even smaller than 1j24b) headphone amplifier In particular, I'm interested in hearing from the experts what kind of fun tube-based displays I might've overlooked for the 1j24b CPU. My current plan is 5971 13-segment tubes (I'm too poor for that many 7971s), but I don't really know what's out there. === I'm also interested in trading to get some of the tubes I admire for their aesthetics. I consider the National NL-90X series (NL-900 no decimal, NL-901 left decimal, NL-902 right decimal, NL-908 both decimals) as well as the Ericsson GR10N tubes some of the most beautiful ever manufactured and would love to trade for/buy some. I have a large number of enormous ICL1-1/7 VFDs as well as some tiny National NL-4998 nixies for trade. I also have the above mentioned sub-subminiature Russian tubes (1c38a triode, 1c38a-q Chinese variant triode, 1j25r pentodes, and tg5r thyratron) as well as their slightly less sub- brethren (1c1a triode, 06p1a pentode, 1t1a thyratron) for anyone who wants to build out their collection of oddities. --Duncan -- 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/spqo062-194q-76qo-68no-q4338r4sp2o8%40qhapnapzg.pbz. -- 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/!%26!AAAAAAAAAAAYAAAAAAAAAPDddShx705MuX20yCpp0vvCgAAAEAAAAMnEwcGcbA5PtDhA%2B8agO1QBAAAAAA%3D%3D%40zeelandnet.nl.
