This power supply circuit for high power audio amplifiers was found in Radio Electronics from the 90's. Power MOSFETs admit modern equivalents. The output current is 5 A.
This circuit is for collectors. It is the circuit of one of the most popular transistor radios of the...
This circuit is from an April 2000 Poptronics. The magazine no longer exists, but the circuit can...
This circuit was found in a 1977 Radio Shack documentation. The unijunction transistor can be...