| 摘要 |
PROBLEM TO BE SOLVED: To suppress the frequency of the drive of a voltage compensation means as much as possible. SOLUTION: There is provided a voltage compensation circuit that compensates voltages fed to a plurality of electric loads. The highest operation compensation voltage is calculated from among operation compensation voltages of the electric loads whose operations are actually required as the result of the detection of an operation request status of each electric load. Then, when the highest operation compensation voltage is higher than an input voltage to the voltage compensation circuit, the voltage compensation circuit is driven to compensate the highest operation compensation voltage. On the other hand, when the highest operation compensation voltage is not higher than the input voltage to the voltage compensation circuit, the drive of the voltage compensation circuit is stopped. COPYRIGHT: (C)2007,JPO&INPIT
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