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Computer power system

  • US 4,757,505 A
  • Filed: 04/30/1986
  • Issued: 07/12/1988
  • Est. Priority Date: 04/30/1986
  • Status: Expired due to Term
First Claim
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1. A backup computer power system for powering and controlling a computer which otherwise is powered by a main power source comprising:

  • auxiliary power supply means for providing backup power to the computer, includingan auxiliary power source including a batteryan automatic power source selector switch, anda status monitor that, upon failure of the main power source, operates said power source selector switch to connect the computer to the auxiliary power source and provides a failure indication output, and that, upon restoration of the main power source, operates said power source selector switch connect the computer to the main power source and provides a power restoration indication output;

    signalling means for providing the failure indication output and the power restoration indication output to the computer from said status monitor; and

    instruction means stored in the computer, said instruction means includingshutdown code for executing a preprogrammed shutdown sequence upon receipt of the failure indication output from said signalling means;

    restart code for executing a preprogrammed restart sequence upon receipt of the power restoration indication output from said signalling means; and

    intervention code providing for operator intervention to defeat the preprogrammed shutdown prior to initation of the preprogrammed shutdown sequence at the option of the operator.

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