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Method and devices for optimizing power consumption of trip units containing microprocessors

  • US 6,731,487 B2
  • Filed: 03/20/2002
  • Issued: 05/04/2004
  • Est. Priority Date: 03/20/2002
  • Status: Expired due to Fees
First Claim
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1. A method of optimizing the power consumption of a trip unit, comprising:

  • sensing a first output from a power system, said first output including a first current and a current-sensing signal, said current-sensing signal being indicative of current in said power system;

    supplying a power supply with only said first current, or with a second current alone or in combination with said first current;

    powering a microprocessor from said power supply;

    inputting a second output to said microprocessor indicative of whether said power supply is receiving said second current;

    operating said microprocessor at a first state when said second output indicates said power supply is not receiving said second current; and

    operating said microprocessor at a second state when said second output indicates said power supply is receiving said second current.

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