| 摘要 |
PROBLEM TO BE SOLVED: To supply power to a plurality of load circuits and reduce the input distortion of an AC power supply, while relatively reducing the number of parts. SOLUTION: A load circuit 1 is connected to a power conversion part, that is subjected to full bridge configuration by switching elements SW1-SW4, a load circuit 2 is connected to a power conversion part that is subjected to half bridge configuration by switching elements SW3 and SW4, and the switching elements SW3 and SW4 are shared by both power conversion parts. The switching elements SW1 and SW2 are shared by a chopper circuit part and a power conversion part in full bridge configuration. As a result, by turning on/off the switching elements, a discharge lamp La1 and a discharge lamp load La2 can be lit and at the same time the input distortion of an AC power supply AC can be reduced by the chopper circuit part. |
