Found in a 90s Radio Electrconics, this circuit is an operational one with a power stage using two transistors. The output current can reach several amps.
This 1960s Japanese commercial AM radio uses 6 germanium transistors and is powered by 4...
Hughes suggests this circuit in a 1968 documentation. The circuit uses old transistors that can be...
This circuit was obtained from an English publication from 1977. The integrated circuit is a...