JPS5752577A - Resistance welding machine - Google Patents
Resistance welding machineInfo
- Publication number
- JPS5752577A JPS5752577A JP12893480A JP12893480A JPS5752577A JP S5752577 A JPS5752577 A JP S5752577A JP 12893480 A JP12893480 A JP 12893480A JP 12893480 A JP12893480 A JP 12893480A JP S5752577 A JPS5752577 A JP S5752577A
- Authority
- JP
- Japan
- Prior art keywords
- welding
- transformer
- primary side
- voltage
- transformers
- 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
Abstract
PURPOSE: To provide a resistance welding machine of good rise characteristics of welding current by connecting the primary side of one of welding transformers to an AC-DC power source, and connecting the primary side of the other welding transformer to an AC power source via a bidirectional SCR at the polarity reversed from that of the primary side of the former transformer.
CONSTITUTION: While not in welding, the operator is simply required to turn thyristors 19, 20 off. Namely, voltage is induced on the secondary side of a welding transformer 10 but since the primary side of a welding transformer 11 is open, no voltage is induced in the secondary side. Moreover, the impedance viewed from the secondary side of the transformer 11 is extremely high and no welding current flows and no welding is carried out. On the other hand, at the welding, the operator turns the thyristors 19, 20 on. Namely, voltage is induced both in the secondary sides of the transformers 10, 11, and since they are connected to an AC power source 18 at the polarity reversed from the primary side of the transformer 11, the secondary side voltages of the transformers 10, 11 are added and this added voltage is applied to electrodes 14, 15, whereby the welding of objects 16, 17 to be welded is accomplished.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12893480A JPS5752577A (en) | 1980-09-16 | 1980-09-16 | Resistance welding machine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12893480A JPS5752577A (en) | 1980-09-16 | 1980-09-16 | Resistance welding machine |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5752577A true JPS5752577A (en) | 1982-03-29 |
Family
ID=14997010
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12893480A Pending JPS5752577A (en) | 1980-09-16 | 1980-09-16 | Resistance welding machine |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5752577A (en) |
-
1980
- 1980-09-16 JP JP12893480A patent/JPS5752577A/en active Pending
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