| 摘要 |
PROBLEM TO BE SOLVED: To reduce the number of electric wires for power supply from an inverter device to a remote controller by supplying the power supply device for the remote controller with power from one type of power supply produced in the main unit-side power supply device for the inverter device itself, and producing a plurality of voltages having other specifications based on the power supply. SOLUTION: A power supply circuit 5 installed in the main unit 3 of an inverter device produces one type of supply voltage (VA[V]) for a remote controller 4, and feeds it to the remote controller 4. The remote controller 4 increases and decreases the fed supply voltage and inverts its polarity through a power circuit 7 installed therein. It thereby produces required voltages V1 [V], V2 [V], V3 [V],...Vn [V] and supplies them to a control circuit 8. At this time VA may be identical or nonidentical with any of V1, V2, V3,..., and Vn. In addition, V1, V2, V3,..., and Vn may be supplied through respective electric wires or a printed wiring board. |
