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 power supply can sources currents up to 22 A to a load. Voltage is 12 V and the transistor...
For signals up to about 500 kHz modulated in amplitude and transmitted by the power network, the...
This circuit was obtained in a European documentation of the 80's. The circuit uses common...