Title:
POWER SUPPLY DEVICE AND POWER SUPPLY DEVICE FOR WELDING
Document Type and Number:
Japanese Patent JP2015220792
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a power supply device (power supply device for welding) capable of properly detecting output current value over a large current region and capable of performing proper output control in the whole region.SOLUTION: In a power supply device 10, a first current sensor ID1 having a specification of a large detectable current region and coarse resolution is selected when an output current value is large, a second current sensor ID2 having a specification of a small detectable current region and fine resolution is selected when the output current value is small, and output control (switching control of an inverter circuit 12) based on an output current value detected by each of the current sensors ID1 and ID2 is performed.
Inventors:
OHARA NAOYA
UMEZAWA ICHIRO
UMEZAWA ICHIRO
Application Number:
JP2014100776A
Publication Date:
December 07, 2015
Filing Date:
May 14, 2014
Export Citation:
Assignee:
DAIHEN CORP
International Classes:
H02M7/48; B23K9/073
Domestic Patent References:
| JPH02125597U | 1990-10-16 | |||
| JP2012135189A | 2012-07-12 | |||
| JPH02125597U | 1990-10-16 | |||
| JP2012135189A | 2012-07-12 | |||
| JPH025107A | 1990-01-10 | |||
| JPH025107A | 1990-01-10 |
Foreign References:
| US20120140524A1 | 2012-06-07 |
Attorney, Agent or Firm:
Makoto Onda
Hironobu Onda
Hironobu Onda