Hey Greg, Filament voltage is only 1 V on these IV-6 tubes, so not a lot of gradient to speak of... and the active current limiter will take care of any in-rush current. Still, I'm seeing relatively well matched voltage drop across the 6 filaments so the simple current limit resistors already in place seem to be doing an adequate job of controlling the operating current.
I'll see what happens over time with the switched power on these IV-6 tubes... The good thing is it's just one clock and the tubes are cheap! I've another clock with cold filaments when in PIR sleep... that clock uses a series connection of three tube filaments to limit the filament voltage - there's no series resistor. I'll also keep an eye on that one as it faces a double whammy - inrush current and filaments switched off during sleep! Regards, Bob -- 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/a8587477-dfe1-4ba8-8817-291940be9234%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
