This circuit was obtained from an 80s factory manual. The integrated circuits used are uncommon today, but the diagram is for reference only.
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...