Electric heating – Metal heating – By arc
Reexamination Certificate
2006-02-07
2006-02-07
Shaw, Clifford C. (Department: 1725)
Electric heating
Metal heating
By arc
Reexamination Certificate
active
06995337
ABSTRACT:
In a power source for an electric arc welder including an inverter having two primary circuits connected in a series circuit across the DC bus of an input rectifier where each primary circuit comprises a capacitor parallel with a primary winding section and a switch to apply the voltage of the capacitor across the primary winding section, so that the primary circuits alternately create a voltage pulse in the primary winding sections to induce voltage pulses in a secondary circuit having a secondary winding coupled to said primary windings and connected by an output circuit to an output welding circuit. There is provided one improvement. The improvement is a soft ferrite saturable reactor in at least one of the series circuit or the output circuit to delay the voltage pulse in the primary winding sections.
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Blankenship George G.
Dodge Robert L.
Luo Lifeng
Fay Sharpe Fagan Minnich & McKee LLP
Lincoln Global Inc.
Shaw Clifford C.
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