| 摘要 |
The welding head includes an element (17) for supporting a welding tool (16) capable of being heated by resistance heating (Joule effect), and a high-frequency current transformer (15) arranged in the immediate vicinity of the support element (17). At least one portion of the support element (17) is electrically connected in series in a secondary winding (loop) of this transformer. The support element (17) preferably forms a rigid structure produced by joining together the parts (11, 12) made of an electrically conducting material, and has a passage (14) for the magnetic circuit of the transformer (15). <IMAGE>
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