Power supply system

  • US 7,233,137 B2
  • Filed: 09/23/2004
  • Issued: 06/19/2007
  • Est. Priority Date: 09/30/2003
  • Status: Expired due to Fees
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First Claim
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1. A power transmission apparatus comprising:

  • a primary side coil; and

    a primary side circuit for feeding to the primary side coil a pulse voltage resulting from switching a DC voltage obtained by rectifying and smoothing commercial power and for supplying power in DC voltage to power reception equipment through the primary side coil,wherein the power transmission apparatus is configured to receive an information signal containing information regarding the power reception equipment from the power reception equipment through a secondary side coil separated from and magnetically connected to the primary side coil and through the primary side coil, andwherein the power transmission apparatus further comprises a power adjusting section configured to adjust, upon receiving the information signal, a level of power to be transmitted to the power reception equipment.

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