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 show the performance of a GraetzBridge or Diode Bridge usedin full-wave rectifers....
We published this circuit in a magazine of the 90s, but it is still present by the components it...
A high level on the input of this circuit causes the trim voltage adjusted output voltage to drop to 1.2...