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 makes use of unusual components today. We found it in General Electric documentation from...
The ADC801 is not an easy component to obtain today, but the configuration is worth reference. The circuit...
The operational amplifier used in this circuit is no longer common on the market, as the circuit is...