Electric heating – Metal heating – By arc
Patent
1992-12-17
1994-10-18
Shaw, Clifford C.
Electric heating
Metal heating
By arc
B23K 909
Patent
active
053570782
ABSTRACT:
A power supply for a consumable electrode arc welding system includes a power transformer adapted to be coupled to an AC source and having a rectified secondary coupled through a series inductor to the electrode. The rectified current is chopped by a MOSFET switch array controlled by a relatively high frequency pulse width modulator having a selectively variable pulse width to supply a pulsed unidirectional current flow to the welding gun. A bridge rectifier is connected across an auxiliary winding of the transformer to provide a supply voltage to the modulator.
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Snap-on Tools Corporation Owner's Manual for YA204C MIG Combination Unit.
Snap-on Tools Corporation Operators Guide and Instruction Manual for YA217 Professional Tote MIG.
Cook Gary L.
Smith Leonard S.
Shaw Clifford C.
Snap-on Incorporated
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