Patent ID: 8294298

Claim:
A redundant power supply device, particularly a power supply device without installing a heat dissipating fan, comprising; a chassis, having at least one power input accommodating space and a plurality of power output accommodating spaces, and the chassis having a height and a width equal to 150+10 mm and 86+10 mm respectively; a back panel device, including a back panel, which is a printed circuit board, and the back panel being mounted onto the chassis and having a plurality of back panel connectors disposed on the back panel and at an opposite side of the containing spaces respectively, and said back panel device further includes an output board fixed to the back panel, and the output board includes a plurality of electric output connectors electrically coupled to the back panel or the corresponding back panel connector, and said plurality of electric output connectors are passed through and installed to a plurality of electric connector slots on the output board respectively; at least one power input module, installed into the power input accommodating space, and having a power input conversion circuit for providing an external AC-to-DC or DC-to-DC conversion function, and the power input module being electrically connected to the back panel; and a plurality of power supply devices, each being installed in the power output accommodating space, and having a power supply connector for connecting the back panel connector; thereby, if the external power supply is an AC input, the power input module will be changed to an AC-to-DC module; and if the external power supply is a DC input, the power input module will be changed to a DC-to-DC module, such that an AC or DC power input module can be installed in the power input accommodating space as the power input module for a power input according to an application requirement of an AC or DC input without changing the back panel.