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.
Suggested by the General Electric Hobby Manual of 1965 this circuit measures voltages from 0 to...
This circuit was found in an American publication from 1968. The transistors are from the time,...
The source shown in the figure provides output voltages in the range of 1.2 to 25 V with currents up...