We found this circuit in a 1991s PE Hobbyst Handbook. The circuit fires 10 LEDs that can control incandescent lamps according to their maximum current.
This variac was found in an old documentation, but it has a current circuit, just using triac of...
This circuit was found in the October 1993 Electronics Now magazine. The output transistors form...
This circuit was found in the December 1990 issue of Radio Electronics magazine. It was used in a...