Found in a 1966’s General Electric documentation, this circuit uses a triple diode from the time. The output current is 5 mA. It serves as a voltage reference.
This signal injector and tracer (follower) was found in an old American documentation. The...
This is a bridge for the measurement of low value resistances and high values too. The circuit...
This circuit was found in a 1968 documentation. The circuit generates three rectangular signals...