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. > > On Thursday, April 28, 2016 at 2:44:36 PM UTC-4, Dekatron42 wrote: >> >> Well, I couldn't keep myself away from the Polyatron so I made a quick >> tweak of the pulse voltages as well as the screen/grid voltage, and voila >> it started to run somewhat better - now I have to go and take care of what >> I really should have done, household chores..... >> >> https://www.youtube.com/watch?v=lZQVZ4pPC4U >> >> /Martin >> >> On Thursday, 28 April 2016 18:20:00 UTC+2, Dekatron42 wrote: >>> >>> Hi, >>> >>> I've just uploaded a very short movie showing my first tries at running >>> an early prototype of the A-201 Polyatron, and it shines a clear blue, just >>> as the Russians have said all along. >>> https://www.youtube.com/watch?v=cUjeha4Tmeo >>> >>> Unfortunately I have not tinkered too much with it so the driving >>> conditions are not optimal, that's the reason for the short movie. I will >>> spend some more time with it in the future to see if I can adjust the >>> driving stage so it will run properly at higher speeds. Right now it looks >>> like it is a simple adjustment of the screen/grid voltage. >>> >>> I've included a few photos here that show it from a few different angles. >>> >>> /Martin >>> >> -- 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/effd46bb-85c6-4ac0-9c14-cc5fe3adb022%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
