Patent ID: 8222827

Claim:
A non-contact power transfer system comprising: a non-contact power supply including: a primary subcircuit having a primary; a current sensor connected to said primary subcircuit, said current sensor sensing an amplitude of a current in said primary subcircuit; a control circuit supplying power to said primary, said control circuit varying a characteristic of said power supplied to said primary as a function of said amplitude of said current sensed by said current 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, and whereby 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.