Title:
DC ARC WELDING MACHINE
Document Type and Number:
Japanese Patent JP3199169
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To prevent generation of arc break when a welding rod easy to generate the arc break is used, and to prevent the input capacity from being increased when the welding rod difficult or generate the arc break is used.
SOLUTION: In the welding machine, the DC power obtained by an input side rectification circuit 2 is converted into the high frequency power by an inverter 3, and the voltage is transformed by a transformer 15. The transformed high frequency voltage is rectified by rectification diode 16, 17, and supplied to an intermediate tap of a rector 18. An end part A of the reactor 18 is connected to a welding rod 20. A base metal 21 is connected to the intermediate tap of the seconded winding of the transformer 15. In addition, the base metal 21 is connected to an end part B of the reactor 18 through a flywheeling diode 19.
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Inventors:
Haruo Moriguchi
Kenzo Danjo
Shigeru Okamoto
Atsushi Kinoshita
Kenzo Danjo
Shigeru Okamoto
Atsushi Kinoshita
Application Number:
JP3835297A
Publication Date:
August 13, 2001
Filing Date:
February 05, 1997
Export Citation:
Assignee:
Sansha Electric Co., Ltd.
International Classes:
B23K9/073; H02M9/00; (IPC1-7): B23K9/073; H02M9/00
Domestic Patent References:
| JP5314143A | ||||
| JP819862A | ||||
| JP5536048A | ||||
| JP8192269A |
Attorney, Agent or Firm:
Hiroshi Tanaka (2 outside)