Power Supplies (Test, Bench) Equipment are designed to supply a variable amount of voltage/current to components for testing purposes. These power supplies have an output voltage ranging from 0 to 1000 VDC,?an output?current?range of 0 to 80 A, with the number of outputs being 1, 2, 3, or 4. The display types are analog, digital, LCD, LED, VFD, and no display.