I don't have a power supply but the spot occurs on the mesh and with a different digit there is a a different spot. The tubes were NOS and I have had them lying about for over a year in a box. I have a couple of QTC boards so I am going to try them on those boards to see if they are the same.
I have never seen anything appear on the Anode mesh with any tubes that I have used so far so this is totally new to me. On Friday, June 30, 2017 at 9:50:36 PM UTC+1, gregebert wrote: > > How do things look when you bench-test the tube on a DC supply ? > > Is the spot actually on the anode mesh itself ? Ionization occurs at the > cathode, so this is indeed strange. > > -- 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 post to this group, send an email to neonixie-l@googlegroups.com. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/c56190d9-c267-4d40-bbc0-3db51e00daa1%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
