Ok! I've never seen a pin become shorter over time but I haven't run my dekatrons for that long. Are you sure it wasn't short to begin with? The pins are quite uneven in length in some dekatrons that I have seen, even unused ones.
/Martin On Sunday, 1 May 2016 14:59:37 UTC+2, Mike Mitchell wrote: > > The cathode has been eaten away. It is now shorter than the other > cathodes. The glow is about the same. I'll take photos tomorrow, the clock > is at work. > > On Saturday, April 30, 2016 at 7:36:57 AM UTC-4, Dekatron42 wrote: >> >> When you say "the zero cathode on the tens of hours is noticeably >> smaller" do you mean that the glow is smaller or that the pin is physically >> smaller? >> >> Can you take a photo of this "smaller" one and also of a normal one and >> show the difference? >> >> /Martin >> >> On Saturday, 30 April 2016 13:20:26 UTC+2, Mike Mitchell wrote: >>> >>> I considered using polytrons when I started the development of my >>> Dekatron-based clock (shown here: >>> https://www.youtube.com/watch?v=pK276xZWyo4 ) >>> I was under the mistaken impression that the position of the glow >>> couldn't be seen from the top of the polytron tube. Now after over a year >>> of operation the zero cathode on the tens of hours is noticeably smaller. I >>> don't know how much longer it will last. I'm going to re-wire the tens of >>> hours tube so that every other cathode is zero, the others one. I'm hoping >>> that the reset-to-zero circuit will still work when driving five cathodes >>> instead of only one, and that the glow will move to one random "zero" >>> cathode instead of all five. I wouldn't have had to worry about this if I'd >>> used a polytron. >>> >>> >>> -- 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/14860507-f829-4cf4-844e-2b8e837b08b3%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
