Inductively powered apparatus
First Claim
1. An inductively powered device comprising:
- a power supply circuit having a primary, said power supply circuit applying power to said primary to generate a magnetic field;
a secondary assembly having a secondary circuit with a secondary and a load, said secondary being disposed within said magnetic field, said secondary physically spaced from the primary by a distance, said magnetic field inducing a current in said secondary to apply power to said load at a magnitude; and
a means for varying the distance between said primary and said secondary in order to control said magnitude of said power applied to said load.
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Accused Products
Abstract
An inductive power supply system for providing power to one or more inductively powered devices. The system includes a mechanism for varying the physical distance or the respective orientation between the primary coil and secondary coil to control the amount of power supplied to the inductively powered device. In another aspect, the present invention is directed to an inductive power supply system having a primary coil and a receptacle disposed within the magnetic field generated by the primary coil. One or more inductively powered devices are placed randomly within the receptacle to receive power inductively from the primary coil. The power supply circuit includes circuitry for adjusting the power supplied to the primary coil to optimize operation based on the position and cumulative characteristics of the inductively powered device(s) disposed within the receptacle.
511 Citations
16 Claims
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1. An inductively powered device comprising:
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a power supply circuit having a primary, said power supply circuit applying power to said primary to generate a magnetic field; a secondary assembly having a secondary circuit with a secondary and a load, said secondary being disposed within said magnetic field, said secondary physically spaced from the primary by a distance, said magnetic field inducing a current in said secondary to apply power to said load at a magnitude; and a means for varying the distance between said primary and said secondary in order to control said magnitude of said power applied to said load. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. An inductively powered device comprising:
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a power supply circuit having a primary generating a magnetic field; a secondary, the secondary not physically in contact with the primary, the primary separated from the secondary by a distance, disposed with said magnetic field, whereby power is induced by said magnetic field in said secondary; a load electrically connected to said secondary, said load receiving said power from said secondary; and means for varying the distance between said primary and said secondary to vary said power applied to said load. - View Dependent Claims (16)
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Specification