Power supply device

Details Power supply device Power supply device

H - Electricity

02

H

H02H 7/125 (2006.01) G06F 1/30 (2006.01)

Patent

CA 2047083

- A power supply device comprises an emergency power cut-off switch, a basic power supply unit supplied with an external alternating current electric power through said emergency power cut-off switch and a plurality of expansion power supply units supplied respectively with external alternating current electric power through power supply switches and provided sequentially and externally to said basic power supply unit. Diodes or current control elements are inserted in a path connecting a first line supplied with direct current outputs from said power supply units in the preceding stages of the externally provided expansion power supply units to a second line for supplying direct current outputs to said power supply units in the next stages of the externally provided expansion power supply units.

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