This circuit has tone control, and its power depends on the supply voltage. The circuit is from the Philips integrated circuits manual from 1990.
The circuit presented uses Linear Technology Operationals, having been found in a 1993 manual. The...
This circuit consists of a pre-amplifier for high impedance microphones. The circuit uses a FET...
The circuit we have just described has been mounted in the car of the author of the project for...