This circuit is from a 1967 General Electric SCR manual. The capacitors are polyester and the inductor must have current according to the controlled load.
This switched filter was found in the 1969 documentation. The FET should be current-matched and eventually...
January 2017 - Mouser Electronics already has the new Ultra Low Drop controllers from Toshiba...
Using a MAX644 this circuit was found in the April 1989 issue of Radio Electronics magazine. The...