JPS561272A - Direct current welding electric power source device - Google Patents
Direct current welding electric power source deviceInfo
- Publication number
- JPS561272A JPS561272A JP7741879A JP7741879A JPS561272A JP S561272 A JPS561272 A JP S561272A JP 7741879 A JP7741879 A JP 7741879A JP 7741879 A JP7741879 A JP 7741879A JP S561272 A JPS561272 A JP S561272A
- Authority
- JP
- Japan
- Prior art keywords
- output
- direct current
- frequency
- transistors
- transformer
- 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.)
- Pending
Links
Landscapes
- Arc Welding Control (AREA)
Abstract
PURPOSE: To enable easy output controlling with simple circuits by inputting direct current after smoothing the same to make the frequency of the bridge inverter circuit having a transformer as its load constant and specifying the variable range of the quiescent time.
CONSTITUTION: Alternating current input is full-wave rectified by a diode and is smoothed by a capacitor C1. The resultant direct current output is connected to the bridge inverter circuit. Thereupon, alternating current is flowed to the primary side of a transformer Tr by the repetition of alternate ON and OFF of two sets of transistors and the secondary side output is connected to the arc load. The transistors Q1, Q4 are simultaneously turned ON by base circuits B1, B4 and are simultaneously turned OFF. When the inverter frequency is made constant, the periods when they can conduct become 0W1/2 period. The same holds ture of the elements Q2, Q3, thus by making the inverter quiescent time when all the elements go OFF variable to half the period of the maximum modulation frequency, the output is decreased from the maximum output state A showing conduction state S subsequently to B, C, thus output controlling may be performed.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7741879A JPS561272A (en) | 1979-06-18 | 1979-06-18 | Direct current welding electric power source device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7741879A JPS561272A (en) | 1979-06-18 | 1979-06-18 | Direct current welding electric power source device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS561272A true JPS561272A (en) | 1981-01-08 |
Family
ID=13633398
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7741879A Pending JPS561272A (en) | 1979-06-18 | 1979-06-18 | Direct current welding electric power source device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS561272A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58107266A (en) * | 1981-12-18 | 1983-06-25 | Hitachi Seiko Ltd | Electric power source for welding |
-
1979
- 1979-06-18 JP JP7741879A patent/JPS561272A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58107266A (en) * | 1981-12-18 | 1983-06-25 | Hitachi Seiko Ltd | Electric power source for welding |
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