This simple neon alternating flashing circuit was found in an old American publication. The current is very low, but the supply must be made with at least 100 V.
This circuit is from 1968 General Electric documentation. It can certainly be adapted for any...
This tester from a 1960 magazine is only for capacitors with insulation voltages above 200 V (110...
Found in a 1991 publication this circuit can be assembled with more modern components. We can use...