Arc welder
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United States of America Patent
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Oct 30, 2007
Grant Date -
Oct 21, 2004
app pub date -
Feb 20, 2004
filing date -
Feb 20, 2003
priority date (Note) -
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status (Latency Note)
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Abstract
An arc welder comprising: a rectifier circuit 2 which rectifies an alternating current 1 to a direct current; an inverter circuit 3; a transformer 4; a second rectifier circuit 5 which rectifies an output of the transformer 4 to a direct current; and a first reactor 6 which is connected to the second rectifier circuit 5. The arc welder further has a current circuit 10 which is connected in parallel to the second rectifier circuit 5 with a reactance that is larger than the reactance of the first reactor 6.
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