| 摘要 |
PROBLEM TO BE SOLVED: To provide a power line communication device that is able to excellently transmit information even if signal passage characteristics of power cables are variously different, and to provide a welding device equipped with the same.SOLUTION: Each of a welding power supply 10 and a wire feeder 100 includes: a power line carrier communication unit 18 (108) for generating a plurality of transmission signals to be superposed on a power cable 160 on the basis of transmission object data; and a coupling circuit 16 (160). The coupling circuit 16 (160) includes a plurality of coupling parts having frequency characteristics different from each other. The plurality of coupling parts each receive the plurality of transmission signals from the power line carrier communication unit 18 (108). The power line carrier communication unit 18 (108) generates the plurality of transmission signals by modulation processing by carrier waves with frequencies different from each other. |
