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Electromagnetic apparatus using shared flux in a multi-load parallel magnetic circuit and method of operation

  • US 7,847,664 B2
  • Filed: 05/06/2009
  • Issued: 12/07/2010
  • Est. Priority Date: 05/06/2009
  • Status: Expired due to Fees
First Claim
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1. An electromagnetic circuit comprising:

  • a primary coil wound on a primary core of magnetically permeable material, the primary core energized by an AC voltage;

    at least two secondary circuits, each having a secondary coil assembly wound on a secondary core of magnetically permeable material, the primary and secondary cores arranged as a parallel magnetic circuit;

    each of the coil assemblies comprising a secondary coil wound in series, on a common said secondary core with a pair of control coils, the control coils positioned on opposing sides of the secondary coil, wherein the control coils are wound in a reverse sense with respect to each other, and each of the control coils shunted by a resistor;

    the secondary circuits each further providing a diode positioned between the coil assembly and an electrically parallel arrangement of a battery and a load.

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