To power small projects, we found this circuit in the Radio Electronics magazine of May 1977. The transistor must be equipped with a heat sink.
Constant currents from 10 mA to 1 A can supply the load, depending on the selection made by S1. Q1...
In the figure we have two typical configurations of voltage regulators with protection against short...
Found in an old Radio Electronics, this circuit uses current components, used to rectify AC...