Backup power supply with parallel AC power source and DC...

Electric power conversion systems – Current conversion – Having plural converters for single conversion

Reexamination Certificate

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Details

C307S064000

Reexamination Certificate

active

11022795

ABSTRACT:
Provided is a backup power supply comprising at least one DC/DC power electrically connected to a DC power source for taking DC current therefrom prior to providing regulated DC current, at least one AC/DC power electrically connected to an AC power source for taking AC current therefrom prior to providing rectified DC current, and a power control device including a power balance unit, a power output circuit, and a detection circuit each interconnected the AC/DC power and the DC/DC power. The power control device can combine DC current from both the AC/DC power and the DC/DC power prior to providing to an electronic device (e.g., computer). The invention can continue providing electricity to the computer in the event of not only a malfunctioning of the AC/DC or DC/DC power but also a power outage of either the AC or DC power source.

REFERENCES:
patent: 5751564 (1998-05-01), Dien
patent: 2006/0139974 (2006-06-01), Dermark
patent: 2004254470 (2004-09-01), None

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