This circuit was found in the July 1994 issue of Electronics Now magazine. The relay can be rated at up to 12 V and 100 mA. The transistor is a general purpose transistor.
A non-sinusoidal 120 V voltage can be obtained with this circuit found in the December 1992 Radio...
This circuit is from an Electronics World of 1967. The described calculations can be applied to...
This version of triac control is from a 1968 documentation. The circuit uses components from the...