Both the IN-13 and IN-9, have sustain voltages ~100V. The IN-13 is fullscale at ~4.5mA, and the IN-9 at ~10mA. If you're using a 130V supply, then just hook up the most basic circuit. The supply, a limiting resistor, and the IN-9 tube. Calculate the resistor for 10mA, with 30V (the difference of supply from tube). That would be 3K. Use the closest resistor you have. 3 1K in series, would be good. Then see what you have. With htis set up, measure the voltage out of the supply, then tube drop, then the resistor drop. Do this all with it running, and not dissembled , while taking all three measurements.
I personally do not like using current meters while doing these kinds of measurements. The current will be the voltage drop of the resistor(s) divided by the resistance. Actually, I don't like using current meters at all. If I have to take a direct current measurement, I like using a current clamp. -- 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/234c87b7-c82e-43c8-be46-905d0999d62e%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
