This 1969 Mullar circuit appears elsewhere on this site. The circuit uses germanium diodes and the indicator is microammeter with zero in the center of the scale.
This circuit using components that are still common in our market was found in a 1987...
This circuit was obtained in a 1998 publication, but it can be easily assembled. The circuit...
Found in a 73 magazine for radio amateurs of the 90s, this circuit provides a 2 kV voltage with 7.5...