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.
Other operational amplifiers series, such as the MC34072, MC34074, MC35071, MC35072, MC35074 d...
This symmetrical power supply with a current of the order of 100 mA was found in an old...
This circuit for semiconductor laser excitation and modulation was found in an American...