B - Operations – Transporting – 23 – K
Patent
B - Operations, Transporting
23
K
B23K 9/00 (2006.01) B23K 9/10 (2006.01) B23K 9/16 (2006.01)
Patent
CA 2243258
An arc welding apparatus having output terminals of a constant current characteristic and a constant voltage characteristic is provided at low cost with a reactor appropriate for both characteristics. A current control circuit 2 controls a secondary output current of a welding transformer 1 by means of a current control device, while a first reactor 3 and a second reactor 4 are constructed so that magnetic flux formed by a first winding 3a and magnetic flux formed by a second winding 4a, which are wound around an annular iron core 7, overlap each other. The other terminal of the first reactor 3 is connected to a constant current characteristic output terminal 8, while the other terminal of the second reactor 4 is connected to a welding base metal use output terminal 10. A constant voltage characteristic output terminal 9 and one terminal of the first reactor 3 are connected to the positive side of the current control circuit 2, while one terminal of the second reactor 4 is connected to the negative side of the current control circuit 2.
Naruto Masafumi
Okubo Masayuki
Yasuhara Yoshimichi
Kirby Eades Gale Baker
Matsushita Electric Industrial Co. Ltd.
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