Patent ID: 6538344
Filing Date: 2003-03-25
Classification: G06F,H02J

Abstract:
An uninterruptable power supply system electrically connected to a power source to send power to a hard disk and a motherboard having a central processing unit (CPU) of a computer, comprising:a battery connected to a memory, a motherboard power circuit, and a hard disk power circuit, said battery being arranged to provide power directly from the battery to the memory, motherboard power circuit, and hard disk power circuit to respectively maintain the normal operations of the memory, the motherboard and the hard disk via the motherboard power circuit and hard disk power circuit respectively; a charge circuit connected between the power source and the battery, which allow the power source to charge the battery via the charge circuit; a power detecting circuit connected to the power source, which sends an interrupt signal to a power management circuit, said interrupt signal causing the power management circuit to control a power switching circuit to switch the connection of the motherboard and the hard disk from the external power supply to the motherboard power circuit and the hard disk power circuit respectively for maintaining the normal operation of the motherboard and the hard disk, and to save running programs and data in the memory to the hard disk when a blackout is detected in the power source by the power detecting circuit.