The Kikusui PLZ50-15A Programmable Electronic Load will operate in either a constant current or constant resistance mode. In the constant resistance mode, the instrument can be used to test DC power sources by providing static or dynamic resistance loading. Continuously variable resistor values are selectable from the front panel. In the constant current mode, it can be used to test DC power sources or to discharge batteries and capacitor banks. Two continuously variable current ranges are selectable from the front panel. Constant Current: 0-1.5/15 Amps Constant Resistance: 0.33/2/10 ohms Power: 150 VA