This circuit was found in a 73 magazine for radio amateurs from the 90s. The circuit uses high voltage transistors and the relay is high voltage as well.
This circuit supplies voltages from 6 to 18 V with a maximum current of 2 A. We found it in a...
This circuit was suggested by Signetics in 1980s documentation. The circuit makes use of the...
This circuit was found in the SGS manual of linear integrated circuits of 1982. The integrated circuit...