The diagram shows a tone control with the LM381 IC. The circuit is from a Radio Electronics from February 1990. The power supply is simple.
This circuit was found in a 90s Radio Electronics. It produces an ultrasonic signal in a special...
This simple sweep generator circuit has been found in older documentation, but can still be easily...
This switched DC / DC converter operates at a frequency of 6 kHz and its output is only a few tens...