The Sorensen SRL20-12 Power Supply provides a DC voltage output of 0 to 20 VDC with a current of 12 A. Regulation in the voltage mode is with line and load combined 0.01% or 2 mV, whichever is greater; in current mode it is 0.2% + 4 mA line or load. The unit has constant voltage/constant current operation with automatic crossover. With the built in adjustable crowbar, operation may be adjusted from the front-panel without removing AC power or load. Other features include remote voltage or resistance programming in voltage or current modes, excellent voltage or current regulation with automatic crossover, and no overshoot at turn-on, turn-off or power failure. The unit also incorporates all the benefits of a linear series pass design with preregulation to provide an additional bonus of high efficiency and outstanding performance.