This is a battery powered 3W power amplifier using germanium transistors. The circuit is from an English documentation from 1967. The transistors are from the time.
This circuit is indicated for audio tests, the tracks being selected by the capacitors. The...
This passive circuit was found in a 1980s documentation. The circuit serves to indicate the...
This small 3 transistor transmitter was found in an English publication from 1963. The coils must...