The circuit presented is a Japanese commercial radio for AM with 50 mW of output power, powered by 9 V. The circuit is from the 60s, having been found in documentation of the time.
Two potentiometers mounted at right angles, so that they can be operated by a lever, form a very...
The integrated circuit and configuration are uncommon. However, the sound quality is good. The...
Found in General Electric's 1969 documentation, this circuit uses two Foto Darlingtons to control...