This circuit with an unusual configuration was found in the January 1974 issue of Radio Electronics magazine. The frequency is given by L1/C1, and the transistors admit equivalents.
This circuit is suitable for testing motor starting capacitors. Capacitors from 2 to 8 uF are...
This circuit was obtained from my Mechatronics Sourcebook, published in the United States. In it...
This circuit was obtained in a 1967 General Electric manual. The circuit applies to other triacs....