This circuit was found in an American 1980s documentation. The transistorized step is the receiver's last IF and the diode is the receiver's existing detector.
This circuit is indicated for applications in alarms generating an intermittent high-power tone in a...
In the figure we have a three-phase AC motor control for voltages up to 600 V or 1200 V depending on...
This traditional dimmer configuration with SCRs, but with full wave control was found in a 1988...