This power supply uses a single-winding transformer. We found it in July 1984 Radio Electronics magazine. The integrated circuit must be equipped with a heat sink.
This old fashioned transistor amplifier was found in a publication of the year 1958. Transformer...
Found in an English publication from the 70's, this radio uses a germanium transistor and requires...
This simple transistor tester circuit was found in the February 1968 issue of Radio Electronics magazine....