This circuit was found in a Radio Electronics from February 1966. The circuit operates with a common battery and the frequency is given by the resonant LC circuit.
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...