This 6-transistor Japanese radio from the 1960s used germanium transistors and had an output power of 180 mW. The circuit is of the superheterodyne type with push-pull class B output.
We found this circuit in an old English documentation. Transistors support modern equivalents. The circuit...
This circuit was found in a 1968 documentation. The circuit generates three rectangular signals...
This 1995 documentation circuit detects when an extension on a phone line is active. Adjustment of the...