Title:
ARC-WELDING POWER SUPPLY AND OUTPUT VOLTAGE MONITOR METHOD FOR ARC-WELDING POWER SUPPLY
Document Type and Number:
Japanese Patent JP2014138948
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide an arc-welding power supply capable of monitoring output voltage properly even when a current flows into from other electrode during welding procedure by plural electrodes.SOLUTION: Threshold voltage used by a voltage monitor part 19f of a control circuit 19 is set based on output voltage E of a rectifier circuit 18 which varies as output voltage (arc voltage Vd) of a power supply 15. Thereby, when welding procedure by plural electrodes is performed with weldment machines 11, 21, even if current flows into an electrode 13 of a first weldment machine 11 from an electrode 23 of a second weldment machine 21, resulting in reduction of the output voltage (arc voltage Vd) of the power supply 15, monitoring of output voltage is performed properly.
Inventors:
ERA TETSUO
Application Number:
JP2013008608A
Publication Date:
July 31, 2014
Filing Date:
January 21, 2013
Export Citation:
Assignee:
DAIHEN CORP
International Classes:
B23K9/073; B23K9/167; B23K9/173
Domestic Patent References:
| JPH10263813A | 1998-10-06 | |||
| JPH0394977A | 1991-04-19 | |||
| JP2005349406A | 2005-12-22 | |||
| JP2009195952A | 2009-09-03 |
Attorney, Agent or Firm:
Hironobu Onda
Makoto Onda
Makoto Onda
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