We found this circuit in the January 1992 issue of Radio Electronics magazine. The circuit consists of an automatic gain control.
This circuit is used in analog-to-digital converters based on a voltage that is sampled and is...
This Baxandall tone control circuit is based on the JFET integrated circuit at the CA3140 input. The...
This simple circuit uses the speakers as microphones. The two-station circuit can be expanded to...