Inductive coil assembly

  • US 7,132,918 B2
  • Filed: 10/20/2003
  • Issued: 11/07/2006
  • Est. Priority Date: 02/04/2003
  • Status: Active Grant
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First Claim
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1. A secondary for an inductively powered device comprising:

  • a first coil arranged at a first angular orientation;

    a second coil arranged at a second angular orientation, said first angular orientation being different from said second orientation;

    a third coil arranged at a third angular orientation, said third angular orientation being different from said first orientation and said second orientation;

    said first angular orientation, said second angular orientation and said third angular orientation are about ninety degrees apart from one another;

    a capacitor connected in series between said load and each of said first coil, said second coil and said third coil;

    said first coil, said second coil and said third coil are electrically connected in a half-bridge arrangement with a diode connected in series between said load and each of said first coil, said second coil and said third coil; and

    circuit means for electrically connecting said first coil and said second coil with a common load.

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