This circuit was found in a Popular Electronics from the 90's. The operating curve is given next to the diagram. The power transistor must have a heat sink.
This circuit was found on an old EDN and can be used as a shield. Optical couplers are from the...
This circuit is based on an uncommon Texas component today, as found in an American 1980s...
This circuit, very critical due to the frequency at which it operates, was found in an American...