Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Haruhiko Manabe0
Toshimitsu Doi0
Keiki Morimoto0
Date of Patent
November 27, 2007
0Patent Application Number
111528320
Date Filed
June 14, 2005
0Patent Primary Examiner
Patent abstract
A power supply for performing arc-machining operation includes a primary rectifier connected to the commercial AC power source and an inverter coupled to the rectifier. A switching device is provided between the rectifier and the inverter. By controlling the power supplied from the rectifier to the inverter, the switching device prevents a large switching loss from occurring in the inverter.
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