This circuit was found in a 1968 General Electric documentation. It has an input impedance of 2 M ohms and excites a load of 16 ohms. The integrated circuit of the time is the PA237.
This circuit is from Motorola documentation, but can be implemented with virtually any...
This simple low power stage with output transformer was found in an American documentation. The transistor...
Suggested by Hughes in 1968 documentation, this circuit makes use of a transistor matched pair and...