The figure shows a typical circuit of a variac with a special transformer with sliding adjustment of the winding turns. The circuit is from an Electronics Now magazine from December 1997.
This circuit generates high voltage for the firing of a xenon lamp. We found this configuration in a 1994...
This circuit can be used as a basis for an experimental analog computer or as an analog shield for a...
This preamp version uses BC109 transistors that are older versions of the current BC549 in plastic...