JPS6220770U - - Google Patents
Info
- Publication number
- JPS6220770U JPS6220770U JP11020085U JP11020085U JPS6220770U JP S6220770 U JPS6220770 U JP S6220770U JP 11020085 U JP11020085 U JP 11020085U JP 11020085 U JP11020085 U JP 11020085U JP S6220770 U JPS6220770 U JP S6220770U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- bridge
- output current
- control
- reference signal
- 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
- 238000003466 welding Methods 0.000 claims 4
- 238000010586 diagram Methods 0.000 description 7
Landscapes
- Arc Welding Control (AREA)
Description
第１図は、本考案の実施例を示す接続図、第２
図ａないしｃは第１図の実施例の動作を説明する
ための線図、第３図ａないしｆは別の実施例にお
ける動作を説明するための線図、第４図は従来の
装置の例を示す接続図、第５図ａないしｃは第４
図の従来装置の動作を説明するための線図である
。
１……直流電源、２，２′，４，４′……トラ
ンジスタ、３，５……スイツチング素子、６……
リアクトル、７……電極、８……被溶接物、１０
……電流検出器、１２……基準信号源、１３……
比較器、１４……制御回路。
Figure 1 is a connection diagram showing an embodiment of the present invention, Figure 2 is a connection diagram showing an embodiment of the present invention.
Figures a to c are diagrams for explaining the operation of the embodiment of Figure 1, Figures a to f are diagrams for explaining the operation of another embodiment, and Figure 4 is a diagram of the conventional device. Connection diagrams showing examples, Figures 5a to 5c are
FIG. 3 is a diagram for explaining the operation of the conventional device shown in the figure. 1... DC power supply, 2, 2', 4, 4'... Transistor, 3, 5... Switching element, 6...
Reactor, 7... Electrode, 8... Work to be welded, 10
...Current detector, 12...Reference signal source, 13...
Comparator, 14...control circuit.
Claims (1)
端子に受けるトランジスタブリツジ回路と、前記
ブリツジ回路の交流端子に接続されたリアクトル
と溶接負荷とからなる直列回路と、前記リアクト
ルと溶接負荷との直列回路に並列に接続された互
いに逆極性の２個のスイツチング素子と、前記ブ
リツジ回路の対応する２個のトランジスタをそれ
ぞれ１対として所定の順序で導通・遮断制御する
とともに前記２個のスイツチング素子を出力電流
の極性が反転する毎に出力電流と逆の極性のスイ
ツチング素子を導通させるための制御回路とを具
備したアーク溶接電源。 ２ 前記制御回路は、前記ブリツジを構成する各
トランジスタの導通時間率を出力電流の検出値と
基準信号との差により決定する回路である実用新
案登録請求の範囲第１項に記載のアーク溶接電源
。 ３ 前記制御回路は、出力電流の検出値Ｉｆと基
準信号Ｉｒとを比較しＩｆ＜Ｉｒのときには前記
ブリツジを構成するトランジスタを導通させ、Ｉ
ｆ＞Ｉｒのときには遮断させる制御を行う回路で
ある実用新案登録請求の範囲第１項に記載のアー
ク溶接電源。[Claims for Utility Model Registration] 1. A series circuit consisting of a DC power supply, a transistor bridge circuit whose DC input terminal receives the output of the DC power supply, a reactor connected to the AC terminal of the bridge circuit, and a welding load. , two switching elements of opposite polarity connected in parallel to the series circuit of the reactor and the welding load, and two corresponding transistors of the bridge circuit are each paired and conduction/cutoff control is performed in a predetermined order. and a control circuit for conducting the two switching elements each time the polarity of the output current is reversed. 2. The arc welding power source according to claim 1, wherein the control circuit is a circuit that determines the conduction time rate of each transistor constituting the bridge based on the difference between the detected value of the output current and the reference signal. . 3. The control circuit compares the detected value If of the output current with the reference signal Ir, and when If<Ir, makes the transistor constituting the bridge conductive, and
The arc welding power source according to claim 1, which is a circuit that performs control to shut off when f>Ir.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11020085U JPH0329013Y2 (en) | 1985-07-17 | 1985-07-17 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11020085U JPH0329013Y2 (en) | 1985-07-17 | 1985-07-17 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6220770U true JPS6220770U (en) | 1987-02-07 |
| JPH0329013Y2 JPH0329013Y2 (en) | 1991-06-20 |
Family
ID=30989002
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11020085U Expired JPH0329013Y2 (en) | 1985-07-17 | 1985-07-17 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0329013Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01133678A (en) * | 1987-11-18 | 1989-05-25 | Kobe Steel Ltd | Method for controlling output of power source for consumable electrode ac arc welding |
-
1985
- 1985-07-17 JP JP11020085U patent/JPH0329013Y2/ja not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01133678A (en) * | 1987-11-18 | 1989-05-25 | Kobe Steel Ltd | Method for controlling output of power source for consumable electrode ac arc welding |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0329013Y2 (en) | 1991-06-20 |
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