HP 6236B Triple DC Power Supply has the following output voltages and currents: 0 to 6 VDC @ 2.5 A and ±0 to 20 VDC @ 0.5 A. Separate, switchable, front panel meters are for voltage and current. Selectable control function allows -20 V output to track changes in the +20 VDC output. Control can be adjusted to give tracking ratio. Main and auxiliary outputs have individual output voltage adjusting control knobs. There is over current protection. Power output terminals are located on front panel. Power input voltage is 110 VAC 47 to 63 Hz.