We found this circuit in the December 1998 issue of Electronics Now magazine. RF transistors such as the BF494 or BF495 can be used. The circuit works at lower frequencies.
This circuit was obtained in the publication 101 Electronics Projects of 1979. The circuit can be...
This control was obtained in an old publication from 1985 and uses a triac, which today can be of...
This is the traditional configuration of an unregulated bridge rectified power source. The circuit...