Found in a 1980s telecommunications documentation, the circuit presented acts as a product detector. The modulator or mixer in the square may be that of the previous circuit.
This circuit is from an old Elektor using components that are not currently common. The circuit is...
This source was found in old documentation, based on a regulating integrated circuit popular at...
The circuit we present is that of a good power ultrasound generator, as it uses a transistorized output...