Based on an OTA LM3600 operational amplifier, this circuit was found in the July 1988 issue of Radio Electronics magazine. The range is 6 Hz to 6 kHz and can be changed.
The frequency of this oscillator is determined only by the crystal, without the use of tuned...
This circuit can be used to produce the sound of bongo drums. Damping is adjusted by P1. The...
This circuit is from a 1965 General Electric manual. It uses components from the time that admit...