I've got a Z567M, which for some reason desoldered internally. There connection is broken at the pins - a small piece of wire connects digits to pins under the mica shield. When I try to make it glow, it sometimes glows for a short moment - only the connected pin, though. Does your tube have a heater/giver* under mica shield? It is doing its job as a ignition blocker. My tube starts glowing at the pins when I connect high voltage to one end of the heater/giver*, as the distance between pins and high voltage is lower.
*I've seen some teories about this thing under mica shield, but no solid info. W dniu czwartek, 8 czerwca 2017 03:29:10 UTC+2 użytkownik Robert L napisał: > > Using a couple of Keithley Source Measure Units in series as a high > voltage supply. (I have a nice bench at work!) These let me go up to 420 > volts at 100 mA with the pair in series. > > I took normal polarity up to about 330 volts measured across the tube at > 15 mA this afternoon... no series resistor as I'm programming the SMU to > set the current limit. Zero glow on the element, intense and quite isolated > glow down near the tube base. I don't want to run at these levels for more > than a few seconds at a time. > > I'll try reverse polarity tomorrow... > > Many thanks to all of you for the ideas! > > 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 [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/4d86bc37-3188-4681-88f2-6b7ce94529ab%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
