JPS55128371A - Welding power source unit - Google Patents
Welding power source unitInfo
- Publication number
- JPS55128371A JPS55128371A JP3544479A JP3544479A JPS55128371A JP S55128371 A JPS55128371 A JP S55128371A JP 3544479 A JP3544479 A JP 3544479A JP 3544479 A JP3544479 A JP 3544479A JP S55128371 A JPS55128371 A JP S55128371A
- Authority
- JP
- Japan
- Prior art keywords
- output
- load
- time
- voltage
- arc
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Arc Welding Control (AREA)
Abstract
PURPOSE: To stabilize the output of the feedback system at the following no-load time by directing the output of an SCR gate signal control circuit to the offset level at the time constant larger than the level before no-load at the time when no-load output is emitted owing to the arc break-off of a short time.
CONSTITUTION: The welding voltage controlled by the output control element connected to a main transformer is fed back and compared with a reference voltage. And the welding power supply unit is so constituted that the feedback signal controlling the input of the output control element according to its differential voltage is changed over to the specified voltage when welding arc stops. Hence, even if the no-load voltage owing to arc break-off is generated in a short time, the output at the arc starting does not change with said high no-load voltage and therefore the arc start is stabilized. Even if the no-load voltage of a long time is generated at such a time as starting, the conditions at the starting may be made constant by adjusting the offser level of the feedback circuit and therefore, the rush at the starting and output defficiency may be prevented and stable welding performed.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3544479A JPS55128371A (en) | 1979-03-28 | 1979-03-28 | Welding power source unit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3544479A JPS55128371A (en) | 1979-03-28 | 1979-03-28 | Welding power source unit |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS55128371A true JPS55128371A (en) | 1980-10-04 |
JPS6332544B2 JPS6332544B2 (en) | 1988-06-30 |
Family
ID=12441996
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3544479A Granted JPS55128371A (en) | 1979-03-28 | 1979-03-28 | Welding power source unit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55128371A (en) |
-
1979
- 1979-03-28 JP JP3544479A patent/JPS55128371A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS6332544B2 (en) | 1988-06-30 |
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