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Power source apparatus

  • US 20040080304A1
  • Filed: 10/14/2003
  • Published: 04/29/2004
  • Est. Priority Date: 10/23/2002
  • Status: Active Grant
First Claim
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1. A power source apparatus comprising:

  • a direct current power source to output a first voltage;

    a load driven with a second voltage higher than the first voltage;

    a booster converter to boost an output from the direct current power source to the second voltage;

    a control circuit, arranged to operate at a voltage higher than the first voltage, to control the booster converter;

    power storage means for storing an output from the booster converter;

    reverse current blocking means, provided between the power storage means and the load, for preventing supply of electric power stored in the power storage means to the load; and

    switch means for, when the booster converter is started, supplying the electric power from the power storage means to the control circuit, and when the booster converter has started, supplying the electric power from the booster converter to the control circuit.

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