Welding power supply

Details Welding power supply Welding power supply

1981-06-26

1983-02-01

Shaw, C. C.

Electric heating

Metal heating

By arc

21913032, B23K 909

Patent

active

043717764

ABSTRACT:
A controllable A.C power supply for supplying quasi square waves of alternating current to a welding arc between an electrode and a metal workpiece such as aluminum, aluminum alloys and the like comprising a first controllable alternately conducting current path for providing for current flow from the electrode to the workpiece; a second controllable alternately conducting current path for providing for current flow from the workpiece to the electrode; inductor means connect in the first and second current paths for accumulating and dissipating energy to maintain the square waves of current; and commutating means for forcibly rendering the second current path nonconductive whereby energy stored in the inductor means provides a voltage sufficient to reestablish the welding current flow from the electrode to the workpiece.

REFERENCES:
patent: 4038515 (1977-01-01), Risberg

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