I made this clock around 2002, and made the video around 2008. https://www.youtube.com/watch?v=VM9TW6GcCQE
http://selectric.org/tubeclock/index.html I probably need to update the web page! But anyways, the clock quit working not long after I made the video, and has just sat doing nothing. For some reason I brought it out into the light a couple days ago, and started messing with it. The counting was not working, it would sometimes show movement, other times just sit stuck. I poked and prodded and noticed it would sometimes start working for a little while if I wiggled one of the four tubes in the input circuit (which turns the sine wave of the line voltage into a 60 Hz pulse). I realized I could try substituting tubes, and see if it would make a difference. The third one I tried, did the trick. The 6U8A seemed to want to be replaced, it started counting just fine. Then I decided to see if I could fix the setting issue. When I was working on the clock originally, I decided to make it into a tall obelisk case, but never got around to actually building the case. To make it fit, I extended the wires from the main unit to the Hour/Minute display unit, and it has always been finicky about setting time since I did that. I decided that maybe it could fit in a smaller case now, so I shortened the wires, and now it works great. I can set the time easily. It's been running for a day and a half, keeping good time. But it sure does get warm, with 31 vacuum tubes! Anyways, hope all of you are doing well, and enjoy my little blast from the past Jim -- 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 post to this group, send an email to [email protected]. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/5d4a0a0b-bbe8-4f6b-9e6b-2e2e726e27e2%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
