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.
We found this circuit in the July 1994 issue of Electronics Now magazine. The circuit can use...
The transistors in this 80's documentation project may be BC548, the most modern equivalents of...
This circuit was found in an Electronic World of 1968. The circuit uses power transistors of the...