The current source for the welding to the arc, and in particular for the welding to the arc, under an inert gas, the tungsten

摘要

P a. the current source for the arc welding, and in particular for the arc welding under an inert gas of the tungsten. / p & & p & b. current source, characterized in that the transformer of a three-phase current has the primary windings preferably connected in a triangle and the secondary windings preferably connected in a star, each secondary winding being arranged in series with a set of two diffusers which can be controlled connected in antiparallel which are in connection with a part of the invention, the median point of the secondary windings being connected to a welding electrode. / p & & p & c. the invention applies in particular to the arc welding under an inert gas of the tungsten. / p