Method and apparatus for welding with voltage control

Details Method and apparatus for welding with voltage control Method and apparatus for welding with voltage control

2008-04-01

2008-04-01

Shaw, Clifford C. (Department: 1793)

Electric heating

Metal heating

By arc

Reexamination Certificate

active

07351932

ABSTRACT:
A method and apparatus for providing welding-type power includes an input circuit, a switched circuit connected to the input circuit, and an output circuit connected to the switched circuit. A controller controls the system output in response to a setpoint and an output feedback signal. A first gain is used to control the output at start up, and a second gain is used to control the output during steady-state welding. The first gain is greater than the second gain.

REFERENCES:
patent: 4247752 (1981-01-01), Stringer
patent: 4665299 (1987-05-01), Iwata et al.
patent: 5783799 (1998-07-01), Geissler
patent: 6815639 (2004-11-01), Geissler
patent: 55-122679 (1980-09-01), None
patent: 55-147477 (1980-11-01), None
Miller® The Power of Blue Invision 456P And Phoenix 456 CC/CV (230/460 And 575 Volt Models) Owner's Manual Feb. 2001.
Miller® The Power of Blue Deltaweld Series Technical Manual Jul. 2000.

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