JPS5752569A - Arc welding machine - Google Patents
Arc welding machineInfo
- Publication number
- JPS5752569A JPS5752569A JP12976780A JP12976780A JPS5752569A JP S5752569 A JPS5752569 A JP S5752569A JP 12976780 A JP12976780 A JP 12976780A JP 12976780 A JP12976780 A JP 12976780A JP S5752569 A JPS5752569 A JP S5752569A
- Authority
- JP
- Japan
- Prior art keywords
- thyristors
- primary
- primary windings
- welding machine
- arc welding
- 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 provide an arc welding machine which improves the safety and reliability of the thyristors used, namely which is highly reliable, by controlling output voltage or output current through phase controlling of the thyristors connected to the primary sides of a welding transformer.
CONSTITUTION: An anti-parallel circuit of thyristors 1, 2 is inserted and connected between the first primary and secondary windings 4a, 4b of a welding transformer 3. As a result, the primary windings 4a, 4b share the voltages of V1, V2(V0=V1+ V2) respectively with respect to source voltage V0, and therefore the margins for the dielectric strength of the thyristors 1, 2 increase. The surge current flowing between the electric power source and the earth will flow always through either of the primary windings 4a, 4b with respect to the thyristors 1, 2, without flowing directly through the thyristors 1, 2 from the power source as shown by a dotted line. Hence, the primary windings 4a, 4b servce as impedance elements, thereby suppressing the surge current and improving the safety of the thyristors 1, 2.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12976780A JPS5752569A (en) | 1980-09-16 | 1980-09-16 | Arc welding machine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12976780A JPS5752569A (en) | 1980-09-16 | 1980-09-16 | Arc welding machine |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5752569A true JPS5752569A (en) | 1982-03-29 |
Family
ID=15017694
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12976780A Pending JPS5752569A (en) | 1980-09-16 | 1980-09-16 | Arc welding machine |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5752569A (en) |
-
1980
- 1980-09-16 JP JP12976780A patent/JPS5752569A/en active Pending
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