This 8 W amplifier with germanium transistors was found in a Japanese documentation from 1967. The circuit is of the commercial type and is powered by two 12 V batteries or by a symmetrical source.
This circuit was found in a 1968 RCA documentation. The circuit can be designed with operational...
This circuit was found in a 1977 Radio Shack documentation. The unijunction transistor can be...
Using an integrated circuit from the time, we found this configuration in a 90s Radio Electronics....