Protection of Voltage Sources from Current Overloading

A voltage source is described that provides protection of high-power output transistor stages against current overloading. The smooth setting of the maximum allowable output current makes it possible to quickly change the permissible load current from 6 to 13 A under changes in the output voltage from 2.5 to 9.1 V, while providing a power reserve for the output transistor of at least 35%.