Mitch, I have noticed with some clocks that use either IV25 or IV26 VFD tubes (the dot matrix type ones) that they take a bit of time to stabilize/age/reach peak luminosity ...not sure if that's just dumb luck on my part or there's something to it....I'm sure someone else on the list knows more about them than I! I've definitely had segments that have looked dull to start with but after overnight use have gotten brighter....
Nick On Thu, Mar 26, 2020 at 12:52 PM gregebert <gregeb...@hotmail.com> wrote: > Can you measure the segment current ? For a given current, the brightness > should be similar for tubes in the same condition. If not, there is a > problem with manufacturing consistency. As VFDs age, they produce less > luminous output. Some will develop visible dark bands nearest the > filament(s), due to greater electron bombardment. > > Mitch - You did a great job hiding your board where it's "really hacked > up". Picture looks like a mature product that's been pulled off the > assembly line. > > -- > 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 neonixie-l+unsubscr...@googlegroups.com. > To view this discussion on the web, visit > https://groups.google.com/d/msgid/neonixie-l/d5c3d50a-0ae7-4b88-acc0-e960f0a1f7f6%40googlegroups.com > <https://groups.google.com/d/msgid/neonixie-l/d5c3d50a-0ae7-4b88-acc0-e960f0a1f7f6%40googlegroups.com?utm_medium=email&utm_source=footer> > . > -- 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 neonixie-l+unsubscr...@googlegroups.com. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/CAOX%2BRHKU2ykjcozQcKJe_s-Ycj6Aq0DsiAvdt26rdVRAcMKv1g%40mail.gmail.com.
