| 摘要 |
<P>PROBLEM TO BE SOLVED: To solve a problem in which AC welding equipment needs to be purchased when AC welding is performed, that is, even if DC welding equipment is owned, purchase of AC welding equipment is separately required when AC welding is desired. <P>SOLUTION: The DC welding equipment is connected to an AC welding apparatus which includes: a first input part for inputting a DC output that is output by the DC welding equipment; a switching circuit for switching the DC output from the DC welding equipment input in the first input part into positive and negative and performing AC output; a second input part for inputting a signal output by the DC welding equipment so as to control the switching circuit; and an output part for supplying to a welding load AC output that is output by the switching circuit, the AC welding apparatus being provided separately from the DC welding equipment, and the DC output of the DC welding equipment is input in the AC welding apparatus, with AC outputting performed from the AC welding apparatus to the welding load. <P>COPYRIGHT: (C)2010,JPO&INPIT |
