This Power supply sources from 500 to 1,000 mA according the transformar and was found in a publication of the year 1958. The diodes can be now the 1N4004 and the transistor should be mounted on a heatsink.
This circuit was found in a PE Hobbyst Handbook of 1989. It uses a black light fluorescent of the time....
What is a dual frequency generator for? There are several possibilities of use for this circuit. The...
The project presented in a 2009 documentation is intended for radio amateurs operating in the...