| 摘要 |
PROBLEM TO BE SOLVED: To solve the problem wherein the reliability of a dual power supply device is deteriorated, since output currents of two sets of DC power supply devices are not equalized in a dual power supply device to which the two sets of DC power supply devices are connected in parallel, and large voltage variations are caused, when the DC power supply devices are switched. SOLUTION: An output current value of each DC power supply device is detected, an output voltage is lowered at a prescribed rate, when the output current value becomes large; and the output voltage is raised, when the output current value becomes small. Since the output currents of the two sets of DC power supply device are equalized, reliability of the power supply device is improved, and the voltage variation when the DC power supply devices are switched can be made small. COPYRIGHT: (C)2008,JPO&INPIT
|
