Today this frequency corresponds to the end of the FM band. However, in December 1958, when the circuit was published in Radio Electronics magazine it was the frequency used by American satellites.
This circuit was found in the 1991 Electronics Experimenter's Handbook. It activates a relay when...
Found in a 1967 Delco documentation, this circuit can deliver power from 40 to 50 W at 8-ohm load....
This article is from an old publication by A. Fanzeres. With the advent of the Nuclear Era for...