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.
In the figure we have an improved method of varying the voltage of a 7812 regulator. The circuit is...
This amplifier operates with a current amplifier for audio distribution lines. The power MOSFET can...
This circuit was found in Popular Electronics from 1992. The circuit has steps determined by...