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 was found in a Japanese publication from the 1960s. It uses germanium transistors and is powered...
Only signals about 1 kHz can pass through this tuned circuit. The main component is a operational...
This circuit can control the power from 0 to 70% of the maximum power on a load. The circuit was...