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.
This conventional source with transistors was found in a 1989 documentation. The transistors must...
The components used in this 80's circuit are uncommon today. The circuit is intended for...
This circuit produces the sound of a motorcycle or an outboard motor. The frequency is adjusted in the...