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Inductively coupled ballast circuit

  • US 9,299,493 B2
  • Filed: 11/26/2013
  • Issued: 03/29/2016
  • Est. Priority Date: 06/21/1999
  • Status: Expired due to Term
First Claim
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1. A non-contact power transfer system comprising:

  • a non-contact power supply including;

    a primary subcircuit having a primary;

    a sensor connected to said primary subcircuit, said sensor sensing an amplitude of a first characteristic of power in said primary subcircuit;

    a control circuit supplying power to said primary, said control circuit varying a second characteristic of said power supplied to said primary as a function of said amplitude of said first characteristic of power in said primary subcircuit sensed by said sensor;

    an electronic component separable from said non-contact power supply, said electronic component being absent from physical interconnection with said non-contact power supply and absent from electrical connection with said non-contact power supply, said electronic component and said non-contact power supply capable of inductively coupling when in sufficient proximity to each other said electronic component includes;

    a secondary for inductively coupling with said primary, said secondary being absent from physical interconnection with said primary, said secondary being absent from electrical connection with said primary, wherein said primary is capable of inductively energizing said secondary; and

    a load electrically connected to said secondary, whereby power is provided to said load by said secondary,whereby said electronic component is readily placeable in sufficient proximity to said non-contact power supply to inductively receive power without the need to make electrical connection with said non-contact power supply and without the need to make physical interconnection with said non-contact power supply, andwhereby said electronic component is readily removable from the sufficient proximity of said non-contact power supply without the need to disconnect electrical connection with said non-contact power supply and without the need to disconnect physical interconnection with said non-contact power supply.

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