Power mangement system for a computer

  • US 5,870,613 A
  • Filed: 04/14/1995
  • Issued: 02/09/1999
  • Est. Priority Date: 01/02/1992
  • Status: Expired due to Term
First Claim
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1. A system for supplying power to a computer in response to interrupts from external devices, the system comprising:

  • a first power supply having an input and an output for converting an AC voltage to a DC voltage, the input coupled to a first AC voltage source to receive AC voltage;

    a second power supply having a voltage input, a control input, and an output for converting an AC voltage to a DC voltage in response to a control signal, the input coupled to the AC voltage source to receive AC voltage in parallel with the first power supply, the output coupled to supply power to the computer; and

    a power management circuit having a power input, the power input of the power management circuit coupled to the output of the first power supply wherein the power management circuit is powered by the first power supply, an output of the power management circuit coupled to the control input of the second power supply wherein the output of the power management circuit provides control signals to the second power supply, control inputs and outputs coupled to the computer, and interrupt inputs coupled to the external devices to receive interrupts from the external devices.

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