This circuit is from a Radio Electronics from April 1964. The circuit uses power transistors of the time, which must be mounted on a good heat radiator. Modern equivalents can be used.
This is a very simple atomic radiation detector circuit using a Geiger-Muller tube. The circuit was...
This power source, obtained in a 1973 publication, suggests the use of partially burned germanium...
Using a V/F converter this circuit was found in the June 1991 issue of Radio Electronics magazine. The...