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Reserve power supply for computers

  • US 4,315,162 A
  • Filed: 05/09/1980
  • Issued: 02/09/1982
  • Est. Priority Date: 05/09/1980
  • Status: Expired due to Term
First Claim
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1. A power supply comprising:

  • a first source of electrical energy;

    a second source of electrical energy;

    switch means for connecting said first source in electrical series with said second source when said switch means is in a first selectable state and for connecting said first source in electrical parallel with said second source when said switch means is in a second selectable state; and

    coupling means for coupling said first and second sources to a first output of a primary power supply so that said sources provide electrical power to a load connected to the primary power supply when said sources are connected in series and the voltage at the first output of said primary power supply is a predetermined amount below a first voltage output of said serially connected first and second sources and so that the primary power supply provides a charging current to said first and second sources when said sources are connected in electrical parallel.

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