Electrical transmission or interconnection systems – Plural load circuit systems
Reexamination Certificate
1999-09-22
2001-02-20
Paladini, Albert W. (Department: 2836)
Electrical transmission or interconnection systems
Plural load circuit systems
C307S080000
Reexamination Certificate
active
06191498
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The invention relates to a power-supplying device, more particularly to a power-supplying device that can convert input power into different voltage outputs.
2. Description of the Related Art
Conventional electrical appliances, such as digital cameras, motion video recorders, mobile telephones and portable computers, use battery packs as a source of electrical power. To use electrical appliances having different specifications of voltage inputs, different battery packs for providing the voltage inputs must be prepared, thereby resulting in inconvenience and increased costs.
SUMMARY OF THE INVENTION
Therefore, the object of the present invention is to provide a power-supplying device that can convert direct current input power into different voltage outputs.
According to the present invention, a power-supplying device is adapted to generate different voltage outputs, and includes an input power providing unit for providing an input power signal, a selector unit operable so as to generate a voltage select signal corresponding to a selected one of the voltage outputs, a processor unit connected to the selector unit so as to receive the voltage select signal therefrom and so as to generate a converter control signal corresponding to the voltage select signal, and an adjustable dc-to-dc converter connected to the input power providing unit and the processor unit so as to receive the input power signal and the converter control signal respectively therefrom. The converter is controlled by the converter control signal so as to process the input power signal in order to generate the selected one of the voltage outputs.
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patent: 5592030 (1997-01-01), Adahan
patent: 5652499 (1997-07-01), Morita et al.
patent: 5708351 (1998-01-01), Takamoro
patent: 5715156 (1998-02-01), Yilmaz et al.
patent: 5804894 (1998-09-01), Leeson et al.
patent: 5929597 (1999-07-01), Pfeifer et al.
Baker & Botts L.L.P.
DeBeradinis Robert L.
Pacific Technology Co., Ltd.
Paladini Albert W.
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