Harvesting power from multiple energy sources
First Claim
1. A device, comprising:
- a plurality of energy harvesting circuits all connected for powering a load, the load being the same load, a voltage dependent switch positioned between said plurality of energy harvesting circuits and said load, said plurality of energy harvesting circuits including;
a first energy harvesting circuit,a second energy harvesting circuit, anda third energy harvesting circuit,wherein said first energy harvesting circuit includes a first transducer,wherein said second energy harvesting circuit includes a second transducer, andwherein said third energy harvesting circuit includes a third transducer,wherein said first transducer and said second transducer both provide AC current and wherein said third transducer provides DC current,wherein said first transducer has a substantially higher impedance than said second transducer, anda plurality of diodes, wherein a diode is located between each of said plurality of energy harvesting circuits and said voltage dependent switch.
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Accused Products
Abstract
A device includes a plurality of energy harvesting circuits, an energy storage device, a first diode and a second diode. The plurality of energy harvesting circuits includes a first energy harvesting circuit and a second energy harvesting circuit. The first energy harvesting circuit includes a first transducer and the second energy harvesting circuit includes a second transducer. The first transducer is structured for converting a different kind of energy into electricity than is the second transducer. The first diode is electrically connected between the first energy harvesting circuit and the energy storage device and the second diode is electrically connected between the second energy harvesting circuit and the energy storage device. The first diode is oriented to prevent energy from the second energy harvesting circuit from being dissipated in the first energy harvesting circuit and the second diode is oriented to prevent energy from the first energy harvesting circuit from being dissipated in the second energy harvesting circuit.
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Citations
23 Claims
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1. A device, comprising:
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a plurality of energy harvesting circuits all connected for powering a load, the load being the same load, a voltage dependent switch positioned between said plurality of energy harvesting circuits and said load, said plurality of energy harvesting circuits including; a first energy harvesting circuit, a second energy harvesting circuit, and a third energy harvesting circuit, wherein said first energy harvesting circuit includes a first transducer, wherein said second energy harvesting circuit includes a second transducer, and wherein said third energy harvesting circuit includes a third transducer, wherein said first transducer and said second transducer both provide AC current and wherein said third transducer provides DC current, wherein said first transducer has a substantially higher impedance than said second transducer, and a plurality of diodes, wherein a diode is located between each of said plurality of energy harvesting circuits and said voltage dependent switch. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A device for powering a load, comprising an energy harvesting circuit, a voltage dependent switch, an energy storage device, a first connection to the load, and a second connection to the load, wherein said energy harvesting circuit includes a transducer for converting a kind of energy into electricity, wherein said first connection to the load connects said energy harvesting circuit to power the load, wherein said voltage dependent switch is connected between said energy harvesting circuit and said energy storage device, wherein said second connection to the load connects said energy storage device to power the load, wherein said second connection to the load includes a diode oriented to allow current from said energy storage device to flow to said load.
Specification