Power supply apparatus and method based on parasitic power extraction
First Claim
1. Apparatus for supplying power to a load device that is unable to tap into a power source, comprising:
- a plurality of signal lines connected to said load device that is unable to tap into a power source;
at least a first device that provides first and second potentially time varying signals on first and second ones of said signal lines to said load device, wherein said first and second time varying signals are information bearing signals;
a power extractor that extracts voltage/current from said first and second potentially time varying signals and provides first and second voltage/current signals, wherein positive going portions of said first and second potentially time varying signals are combined in an additive manner to provide said first voltage/current signal and negative going portions said first and second potentially time varying signals are combined in an additive manner to provide said second voltage/current signal; and
a power conversion circuit that converts said first and second voltage/current signals to a plurality of dc voltages that are provided to said load device that is unable to tap into a power source.
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Abstract
Power supply apparatus and method based on parasitic power extraction is disclosed. Power is extracted from signals that are inbound and/or outbound from an equipment. The extracted power is converted to dc voltages for a device associated with the equipment. The positive portions of the extracted power are combined in an additive manner to provide a first potentially time-varying signal and negative portions of the extracted power are also combined in an additive manner to provide a second potentially time-varying signal. The two potentially time-varying signals are also combined in an additive manner and divided into the desired number of dc voltages and magnitudes. An optional dc voltage power source is provided should the extracted power be inadequate to provide the dc voltages.
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Citations
25 Claims
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1. Apparatus for supplying power to a load device that is unable to tap into a power source, comprising:
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a plurality of signal lines connected to said load device that is unable to tap into a power source; at least a first device that provides first and second potentially time varying signals on first and second ones of said signal lines to said load device, wherein said first and second time varying signals are information bearing signals; a power extractor that extracts voltage/current from said first and second potentially time varying signals and provides first and second voltage/current signals, wherein positive going portions of said first and second potentially time varying signals are combined in an additive manner to provide said first voltage/current signal and negative going portions said first and second potentially time varying signals are combined in an additive manner to provide said second voltage/current signal; and a power conversion circuit that converts said first and second voltage/current signals to a plurality of dc voltages that are provided to said load device that is unable to tap into a power source. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 12, 13, 14, 15, 16, 17, 18)
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10. An apparatus for supplying power to a load device comprising:
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a plurality of signal lines connected to said load device; at least a first device that provides first and second potentially time varying signals on first and second ones of said signal lines to said load device; a power extractor that extracts voltage/current from said first and second potentially time varying signals and provides first and second voltage/current signals; a power conversion circuit that converts said first and second voltage/current signals to a plurality of dc voltages that are provided to said load device; and a second device that provides at least a third one of said potentially time varying signals on a third one of said signal lines. - View Dependent Claims (11)
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19. Apparatus for supplying power to a load device that is unable to tap into a power source comprising:
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a plurality of input stages and a plurality of output stages connected in circuit with a transformer, wherein said input stages extract power from a plurality of potentially time varying signals to produce a first voltage/current signal and a second voltage/current signal, and wherein positive going portions of said first and second potentially time varying signals are combined in an additive manner to provide said first voltage/current signal and negative going portions said first and second potentially time varying signals are combined in an additive manner to provide said second voltage/current signal, wherein said first and second time varying signals are information bearing signals; and a switching circuit that switches said input stages to combine said first voltage/current signal and said second voltage/current signal in said transformer to provide a plurality of dc voltages in said output stages for said load device that is unable to tap into a power source. - View Dependent Claims (20, 21, 22)
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23. A method for supplying power to a load device that is unable to tap into a power source comprising:
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providing a plurality of signal lines connected to said load device that is unable to tap into a power source; providing at least a first device that provides first and second potentially time varying signals on first and second ones of said signal lines to said load device, wherein said first and second time varying signals are information bearing signals; extracting positive going and negative going portions from first and second potentially time varying signals; combining said positive going portions in an additive manner to provide a first voltage/current signal and said negative going portions in an additive manner to provide a second voltage/current signal; and converting said first and second voltage/current signals to a plurality of dc voltages that are provided to said load device that is unable to tap into a power source. - View Dependent Claims (24, 25)
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Specification