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US 7,893,657 B2Granted
Multi-power charger and battery backup system
OwnerAnand Kumar Chavakulainventor
Life of this patent
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Abstract
A multi-power charger comprises an internal battery, receptacles for connecting one or more external power sources, and output receptacles for connecting to an electronic device. A voltage selection circuit determines an operating voltage of the first device and selects a power supply source to supply the operating voltage the device. The power supply source may be the internal battery, the external power source, or both. The operating voltage is delivered to the device via the output receptacle.
Claims15
A multi-power charger comprising:
- an internal battery;
- a first input receptacle for connecting to a first external power source;
- a first output receptacle for connecting to a first device;
- a voltage selection circuit, wherein the voltage selection comprises logic for:
- determining a first operating voltage of the first device;
- selecting a first power supply source to supply the first operating voltage of the first device, wherein the first power supply source is at least one of the group consisting of the internal battery and the first external power source;
- and
- delivering the first operating voltage to the first output receptacle.
5 more elements
Dependencies are inferred from the claim text.