This 80's circuit uses a germanium transistor like the AC121. The circuit has an output transformer of the type found on many transistor radios of the time.
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....