Gw instek psm series programmable dual range dc power supply gw instek psm 6003 the gw instek psm series are single output dual range 120 or 200w programmable linear dc power supplies ovp ocp otp and output onoff control protect the psm series and their load from unexpected conditions high resolution high regulation and low ripple are maintained at 1mv1ma 001 and lt350vrms respectively operation and configuration is simplified with a digital interface and a clear l