Can you monitor the voltage and current of the tube while it's running ? I cant help wondering if higher voltage will keep it on.
I made my own nixie bench supply which has variable voltage and current, so I usually set the voltage above 200V, and limit the current to the datasheet value, which is 4.5 to 6mA per segment for the 8971. Do all segments show the same behavior, or just some of them ? On Tuesday, November 24, 2020 at 6:11:58 PM UTC-8 Kevin A. wrote: > Hi all, > > A friend of mine, also purveyor of cold cathode and other unique displays, > has collected two 8971 nixies that seem to be having an odd failure. > > When powering the tube on, it ignites normally and begins to operate. > However, after a period of 30 seconds or so, none of the cathodes can stay > ignited and they fizzle down into a state of very faint partial > illumination. > > Has anyone experienced this before? The most common failure mode has to be > outgassing, but the tube is still full of neon as far as I can tell. It > just does not stay ignited for more than a period of seconds. Can this be > remedied by applying some kind of high current or high(er) voltage pulse > the same way cathode poisoning sometimes can? > -- 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 view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/9ca0e0f5-53b7-49c7-a654-a817ca45bfd9n%40googlegroups.com.
