This circuit was suggested by documentation from a 1980’s General Electric. The triacs determine the maximum load controls. The components in parallel with the load are varistor type protectors.
This high quality circuit with complementary symmetry was found in an Electronics World of 1966....
Found in an Electronic Design this circuit controls a headlamp by triggering a time determined by the...
This small switched regulator was found in an 60’s Optical Electronics. The circuit uses an...