JPS57124570A - Dc arc welding machine - Google Patents

Dc arc welding machine

Info

Publication number
JPS57124570A
JPS57124570A JP1055881A JP1055881A JPS57124570A JP S57124570 A JPS57124570 A JP S57124570A JP 1055881 A JP1055881 A JP 1055881A JP 1055881 A JP1055881 A JP 1055881A JP S57124570 A JPS57124570 A JP S57124570A
Authority
JP
Japan
Prior art keywords
output
current
voltage
circuit
capacitor
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
Application number
JP1055881A
Other languages
Japanese (ja)
Other versions
JPH0113957B2 (en
Inventor
Tetsuo Hayashi
Saburo Okumura
Kazuhisa Wakiya
Hideo Ishii
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sansha Electric Manufacturing Co Ltd
Original Assignee
Sansha Electric Manufacturing Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sansha Electric Manufacturing Co Ltd filed Critical Sansha Electric Manufacturing Co Ltd
Priority to JP1055881A priority Critical patent/JPS57124570A/en
Publication of JPS57124570A publication Critical patent/JPS57124570A/en
Publication of JPH0113957B2 publication Critical patent/JPH0113957B2/ja
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00—Arc welding or cutting
    • B23K9/10—Other electric circuits therefor; Protective circuits; Remote controls

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Mechanical Engineering (AREA)
  • Arc Welding Control (AREA)

Abstract

PURPOSE:To reduce the size of the entire part of a titled device by so constituting the same that the waveform of output electric current can be controlled to a prescribed waveform in a short circuit state without using any DC reactor. CONSTITUTION:When the output terminal of an AC-DC converter 8 short-circuits, the output of a comparator 40 goes to the 0 level, and a capacitor 36 is charged, thence the successively increasing charging voltage is supplied to an adder 30. Hence, an error amplifier 26 makes error amplification of the charging voltage added with reference voltage Ss1 and the voltage of a shunt 28, and a control circuit 16 controls the switching transistor of a high frequency inverter 4 by means of this output. Thereupon if the vaues of a resistor 34 and the capacitor 36 are set at proper values, the output current can be controlled. The circuit 16 controls the switching transistor of the circuit 4 so as to make the output voltage constant in such a way that the output current of the value above the min. current for sustaining the arc is flowed by the output of an error amplifier 17 when the arc state is attained after the end of the short circuit state.
JP1055881A 1981-01-26 1981-01-26 Dc arc welding machine Granted JPS57124570A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1055881A JPS57124570A (en) 1981-01-26 1981-01-26 Dc arc welding machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1055881A JPS57124570A (en) 1981-01-26 1981-01-26 Dc arc welding machine

Publications (2)

Publication Number Publication Date
JPS57124570A true JPS57124570A (en) 1982-08-03
JPH0113957B2 JPH0113957B2 (en) 1989-03-08

Family

ID=11753574

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1055881A Granted JPS57124570A (en) 1981-01-26 1981-01-26 Dc arc welding machine

Country Status (1)

Country Link
JP (1) JPS57124570A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59150670A (en) * 1983-02-17 1984-08-28 Matsushita Electric Ind Co Ltd Controlling method of dc arc welding machine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59150670A (en) * 1983-02-17 1984-08-28 Matsushita Electric Ind Co Ltd Controlling method of dc arc welding machine

Also Published As

Publication number Publication date
JPH0113957B2 (en) 1989-03-08

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