B - Operations – Transporting – 23 – K
Patent
B - Operations, Transporting
23
K
327/67
B23K 11/24 (2006.01) B23K 11/25 (2006.01) G05F 1/63 (2006.01)
Patent
CA 1239197
ABSTRACT OF THE DISCLOSURE A welding power supply for applying welding current to materials to be welded, particularly, for seam welding operations for thin materials, wherein the power loss of the unit is minimized, a wide range of welding conditions can be accommodated, and the welding quality is improved. The primary winding of a reactor having an iron core is connected between an AC power source and the welding electrodes, while the center-tapped secondary winding is connected to a current controlling unit. In the current controlling unit, when the welding current starts to exceed a predetermined value, the secondary winding is controlled so that the welding current cannot increase beyond the predetermined value.
487578
Mitsubishi Denki Kabushiki Kaisha
Riches Mckenzie & Herbert Llp
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