Patent ID: 7394674
Filing Date: 2008-07-01
Classification: G06F,H02J

Abstract:
1. A backup power supply system 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 plurality of components each interconnected to the AC/DC power and the DC/DC power, the at least one DC/DC power electrically connected to the DC power source being connected in parallel with the at least one AC/DC power electrically connected to the AC power source, the power control device combining DC current from both the AC/DC power and the DC/DC power prior to provide power to an electronic device; wherein a first component of the power control device is a power balance unit for controlling a ratio of power output of the AC/DC power to that of the DC/DC power.