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

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

2008-07-01

2008-07-01

Nguyen, Matthew V (Department: 2838)

Electric power conversion systems

Current conversion

Having plural converters for single conversion

C307S064000

Reexamination Certificate

active

07394674

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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