Using the integrated circuit 723 we found this power supply in an article in the magazine Radio Electronics from August 1971. The transistor may be a BD136 equipped with a heat sink.
This two-transistor amplifier can be used as power stage for intercom, experimental receivers,...
This sensitive circuit was found in old English documentation. Transistors may be modern...
This configuration, already presented in other points of this section and website, is of a...