This 7-tube circuit was obtained from an American publication in 1947. The circuit has a push-pull output with a source using a transformer.
This circuit is based on the voltage drop of the diodes in conduction, in the order of 1.6 to 1.7...
The output power of this amplifier depends on the supply voltage that can be between 3 and 16 V....
This circuit is more elaborate than the previous one, employing an integrated amplifier circuit of the...