The circuit presented is from the Motorola Linear Databook of 1990. The integrated circuit is a transconductance operating and the power supply need not be symmetrical.
This circuit makes use of a low impedance microphone. The relay is according to the supply voltage...
This circuit behaves as a voltage controlled resistor and can serve as a small load. The circuit is...
The purpose of this project is to monitor remote loads. The windings are made in a burnt...