B&K Precision 1672 Quad Display Triple Output DC Power Supplies, 0-3A Current (variable outputs) Linear power supply unit provides a constant source of DC voltage for powering and testing electronic devices Two outputs supply adjustable voltage and current Third output supplies fixed voltage of 5VDC and current of 3 amp Separate knobs on the front panel for independently adjusting voltage and current output of variable outputs Four LED screens show current and voltage for variable outputs simultaneously