The two circuits shown show how to obtain an SSB / CW control for receiving this signal top at a common receiver. The circuits were found in an old American manual from the 80's.
The circuit shown timing the drive of a motor using an optical coupler. The diode bridge can be...
Found in a 1963 documentation, this circuit employs germanium transistors of the time. Transformer and...
This circuit can measure voltages from 0 to 10 V with a very high input resistance. The circuit is...