This is one of the channels of an amplifier suggested by Westinghouse in 1970s documentation. The circuit uses components from the era and no information about the transformer is given.
We find this circuit in an 80's EDN. The circuit can be used with equivalent operational,...
This circuit is from an Electronics World of 1967. The described calculations can be applied to...
This circuit was obtained from an American technical manual from the 80's. The integrated circuit...