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 shows how to use flip-flops in a SIPO circuit with serial input and parallel output....
This circuit was found in the National Semiconductor Linear Applications Handbook, published in...
This circuit is from an 80's technical newsletter. The circuit can use any general purpose...