JPH02144267U - - Google Patents
Info
- Publication number
- JPH02144267U JPH02144267U JP5123989U JP5123989U JPH02144267U JP H02144267 U JPH02144267 U JP H02144267U JP 5123989 U JP5123989 U JP 5123989U JP 5123989 U JP5123989 U JP 5123989U JP H02144267 U JPH02144267 U JP H02144267U
- Authority
- JP
- Japan
- Prior art keywords
- capacitor
- welding
- power source
- arc
- reactor
- 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
- 239000003990 capacitor Substances 0.000 claims description 11
- 238000003466 welding Methods 0.000 claims description 11
- 238000007599 discharging Methods 0.000 claims 3
- 238000010586 diagram Methods 0.000 description 5
Landscapes
- Arc Welding Control (AREA)
Description
第１図は、本考案の第１の実施例を示す回路図
、第２図は本考案によるアークスタート時のコン
デンサの放電電流および主電流を示す波形図、第
３図は本考案の他の実施例を示す回路図、第４図
は従来の直流アーク溶接機を示す回路図、第５図
は従来の直流アーク溶接機によるアークスタート
時のコンデンサの放電電流および主電流を示す波
形図である。
２……直流電源、１１……充電回路、１３……
補助放電回路、３１……中間タツプ付きの直流リ
アクトル、３１，１２２……放電用リアクト
ル、９１……コンデンサ、１１２……スイツチン
グ素子（単方向サイリスタ）、１２１，１２２…
…放電回路、１２１ｄ，１２２ｄ……ダイオード
。
Fig. 1 is a circuit diagram showing the first embodiment of the present invention, Fig. 2 is a waveform diagram showing the discharge current and main current of the capacitor at arc start according to the present invention, and Fig. 3 is a waveform diagram showing another embodiment of the present invention. FIG. 4 is a circuit diagram showing a conventional DC arc welding machine; FIG. 5 is a waveform diagram showing the discharge current and main current of a capacitor at the time of arc start by a conventional DC arc welding machine. . 2...DC power supply, 11...Charging circuit, 13...
Auxiliary discharge circuit, 31... DC reactor with intermediate tap, 31, 122... Discharge reactor, 91... Capacitor, 112... Switching element (unidirectional thyristor), 121, 122...
...discharge circuit, 121d, 122d...diode.
Claims (1)
直流リアクトルと、コンデンサと、溶接アーク起
動前に前記直流電源の出力電圧で前記コンデンサ
を充電するスイツチング素子を有する充電回路と
、溶接アーク起動時に前記コンデンサの充電電荷
を溶接負荷に放電させるための極性のダイオード
を、前記中間タツプに接続したことによる前記ダ
イオードと前記直流リアクトルの一部との直列回
路からなる放電回路と、溶接停止時に前記コンデ
ンサの残留電荷を放電する補助放電回路とを具備
した直流アーク溶接機。 ２ 直流電源と、コンデンサと、溶接アーク起動
前に前記直流電源の出力電圧で前記コンデンサを
充電するスイツチング素子を有する充電回路と、
溶接アーク起動時に前記コンデンサの充電電荷を
溶接負荷に放電させるための極性に接続したダイ
オードと放電用リアクトルとの直列回路からなる
放電回路と、溶接停止時に前記コンデンサの残留
電荷を放電する補助放電回路とを具備した直流ア
ーク溶接機。[Claims for Utility Model Registration] 1. A charging device that includes a DC reactor with an intermediate tap provided on the output side of a DC power source, a capacitor, and a switching element that charges the capacitor with the output voltage of the DC power source before starting the welding arc. and a discharge circuit consisting of a series circuit of the diode and a part of the DC reactor by connecting a polar diode to the intermediate tap for discharging the charge in the capacitor to the welding load at the time of starting the welding arc. and an auxiliary discharge circuit that discharges residual charge in the capacitor when welding is stopped. 2. A charging circuit including a DC power source, a capacitor, and a switching element that charges the capacitor with the output voltage of the DC power source before starting the welding arc;
A discharge circuit consisting of a series circuit of a diode connected to the polarity and a discharge reactor for discharging the charge in the capacitor to the welding load when welding arc is started, and an auxiliary discharge circuit for discharging the residual charge in the capacitor when welding is stopped. A DC arc welding machine equipped with
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5123989U JPH0756124Y2 (en) | 1989-04-29 | 1989-04-29 | DC arc welder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5123989U JPH0756124Y2 (en) | 1989-04-29 | 1989-04-29 | DC arc welder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02144267U true JPH02144267U (en) | 1990-12-06 |
| JPH0756124Y2 JPH0756124Y2 (en) | 1995-12-25 |
Family
ID=31570495
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5123989U Expired - Lifetime JPH0756124Y2 (en) | 1989-04-29 | 1989-04-29 | DC arc welder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0756124Y2 (en) |
-
1989
- 1989-04-29 JP JP5123989U patent/JPH0756124Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0756124Y2 (en) | 1995-12-25 |
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