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 causes an LED to flash on a robot when someone speaks near him, showing that he is...
With this circuit it is possible to have a safe indication of the balance point for the signals of the...
This circuit was found in an old American publication. The integrated circuit used is no longer easy...