This circuit is from 1943, and the configuration can serve as a basis for more modern projects. The circuit supplies more than 10 watts, and the output is counterphase. Only 4 tubes are used and the rectifier is full wave.

This circuit is from 1943, and the configuration can serve as a basis for more modern projects. The circuit supplies more than 10 watts, and the output is counterphase. Only 4 tubes are used and the rectifier is full wave.