The circuit shown, with the printed circuit board, was found in an article in the June 1990 issue of Radio Electronics magazine. Integrated circuits must be equipped with heat sinks.
This power supply with only 4 components has basic full-wave configuration. The diodes depend on...
This two-band receiver capable of tuning medium waves and the 3.5 to 10 MHz band was sold in Japan...
This circuit was obtained in a 1974 documentation. It shows how to use a JFET as a low intensity...