This 600 W reducer uses SCRs and a switching system. The circuit is from Motorola's 1975 documentation. Equivalent components can be tested for other powers.
This circuit can function as a light alarm by changing the sound when light falls on the sensor....
Based on a unijunction transistor, this circuit was found in the January 1994 issue of Electronics Now...
Although it is a common configuration today, these circuits were taken from an old publication. The...