Portable power supply unit providing backup battery, battery cha

Details Portable power supply unit providing backup battery, battery cha Portable power supply unit providing backup battery, battery cha

1995-09-28

1998-07-21

Tso, Edward

Electricity: battery or capacitor charging or discharging

Cell or battery charger structure

For diverse sizes of cells, batteries, or battery packs

320111, H01M 1046

Patent

active

057839271

ABSTRACT:
This invention discloses a power supply unit for providing DC input to a portable electronic device which is operable with a rechargeable battery and an AC/DC adapter receiving power from an AC power source. The power supply unit includes a set of DC jacks of different sizes for connecting to the AC/DC adapters to receive a DC input voltage. The power supply unit further includes a backup battery pack for providing input voltage to the portable electronic device. The power supply unit further has a charging circuit for charging the rechargeable battery for the electronic device and the backup battery pack of the power supply unit.

REFERENCES:
patent: 4595872 (1986-06-01), Ball
patent: 5160879 (1992-11-01), Tortola et al.
patent: 5200685 (1993-04-01), Sakamoto
patent: 5371456 (1994-12-01), Brainard
patent: 5477123 (1995-12-01), Allen et al.
patent: 5483437 (1996-01-01), Tang
patent: 5510691 (1996-04-01), Palatov

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