| 摘要 |
PROBLEM TO BE SOLVED: To provide a control power circuit for an inverter capable of attaining cost reduction by reducing the size of a device. SOLUTION: This control power circuit for an inverter includes a first rectifying circuit 52 for outputting +12 V power supply for an analog circuit, by rectifying the voltage obtained between one end of the secondary side wiring 43 of a transformer 10 and a middle point; and a second rectifying circuit 53 for outputting -12 V power supply for the analog circuit, by rectifying the voltage obtained between the other end of the secondary-side wiring 43 and the middle point on the secondary side of the transformer 10, with a wiring 11 and the series circuit of a transistor 2 on the primary side. The voltage combining the first rectifying circuit 52 and the second rectifying circuit 53 is outputted as a 24-V power supply for a relay sequence circuit. COPYRIGHT: (C)2008,JPO&INPIT
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