Basetech bt 153 bench psu single output 0 15vdc 0 3a 45w basetech bt 153 p the basetech bt 153 is a laboratory power supply which is ideal for universal use in the research development manufacturing service and training fields the power supply unit has a number of features automatic switching between constant voltage and constant current operation continuously adjustable output voltage and current limit p p all the connections are made via the sockets on the front of the device a