Thanks, Richard. On Thursday, November 28, 2019 at 12:20:13 AM UTC-5, Richard Scales wrote: > > Also, check the Thyratron clock by Paul Andrews, he found some LED's that > matched the Thyratrons nicely, these (or similar) might work for you. > > On Tuesday, 26 November 2019 12:19:55 UTC, Mitch wrote: >> >> >> >> I was a little surprised that the power supplies worked the first time. A >> LM2576 is used to drop the supply voltage to 5v. Two 34063 chips raise that >> voltage to 32v, and lower it to 1.65v. The datasheet and online calculators >> for the 34063s made that part easy. >> >> The next revision will use separate tube boards. Curiously the tubes I >> have with 1990 date codes aren’t very bright. The 1987 versions are good. >> >> I can’t seem to find matching LEDs for the blue-green color, to use for >> colons. Otherwise everything works as it should. >> >> >> >> >> >> [image: IMG-0185.jpg] >> >>
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