In this circuit the triac conducts when switch S1 is opened. We found it in the October 1987 Radio Electronics magazine. The triac is controlled according to the load.
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...