Power Supply with GPIB, 0-21V / 0-240A, 5040W. The 6682A Power Supply is a 5000 Watt system power supply rated at 21V @ 240A. The unit has been designed to provide performance needed for critical applications. This switching power supply can be used in many noise sensitive applications where linear supplies were once the only solution. The low noise has been achieved while still preserving the efficiency and compactness of a switching supply. Regulation: 0.002% Metered Programmable.