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 resistive load circuit for source testing was found in a 1991 publication. Power transistors must be...
No information is given about the transformers in this circuit suggested by Motorola in a 1968...
This circuit was obtained from the February 1990 issue of Radio Electronics magazine. The circuit...