Cheap HV power supply method :
I built my own HV power supply for testing nixies. Look around at second hand or thrift type stores for a single use camera with flash and manual film advance with a single or two AA batteries Ones with a neon ready light are best These have a 330 volt DC power supply for the flash. You just cut off paper cover and pry the shell open you will see the HV module and a large HV capacitor. I replace the battery and turn on the flash - either a push button or slide switch. If the neon glows in less than 30 second the HV works. Turn off the flash and short the HV capacitor with am insulated screwdriver to prevent shocks Remove the battery, and HV module and HV capacitor together. Make a note of where the switch was attached and polarity of where the battery was attached. I put these in a plastic box with battery holder, toggle switch and HV leads that go to red/black alligator clips thru a 25 K resistor for current control That's it, cost me about 5 dollars and is pocketable I take it to all the hamfests and flea markets I go to and check any nixies before I buy.
Phamacy Phil
---------- Original Message ----------
From: John Snow <[email protected]>
Date: January 30, 2020 at 3:33 PM
Ahh, this is for testing them as they arrive, then shelving them for future projects.
I saw Marcin Saj has a few testers, but they seem more for socket-pin tubes.
The knobs also don't have settings I can set it to for different tubes, or a display for the current voltage or current.
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