Integrated signal generator appeared in Radio Electronics magazine in January 1968. The integrated circuits are from the time and the generator produces signals from 5 Hz to 50 kHz.
The battery charger suggested in the figure has its current limited by resistor R1. This component may...
This interesting 80's EDN circuit divides the input pulse frequency by a number given by n...
This circuit was found in a 1969 CQ magazine. It is intended for coupling telephones to radio...