This circuit, which can be used as a shield, was found in General Electric documentation from the 1980s. The coupler uses a photo-SCR. The circuit admits equivalent components.
ts component datasheet which can supply currents of 1 A (1.125 V and 400 mA (1.2 V). The inputs can...
In the figure we have the way to excite a lamp up to 600 mA with one of the four operating LM324....
This circuit controls the brightness of incandescent lamps up to 400 W for the TIC226 series...