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Power supply system

  • US 5,592,353 A
  • Filed: 11/22/1994
  • Issued: 01/07/1997
  • Est. Priority Date: 04/18/1994
  • Status: Expired due to Term
First Claim
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1. A power supply system for supplying power from a power source circuit to a load circuit through a respective power line, comprising:

  • a breaker element provided for said power line, which is turned ON and OFF in response to external control signals, to connect and disconnect said power source circuit to and from said load circuit;

    overcurrent detection means provided for said power line for detecting an overcurrent in said load circuit;

    a short-circuit protection controller provided for said power line, which turns OFF said breaker element to disconnect said power line from said load circuit if a signal from said overcurrent detection means indicates that there is an overcurrent in said load circuit;

    a control circuit connected to said power line of said load circuit, for controlling said load circuit; and

    current limit means connected in parallel with said breaker element, for passing a small current while said breaker element if OFF, said control circuit being sufficiently driven with the small current.

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