JPS56126072A - Arc welding machine - Google Patents

Arc welding machine

Info

Publication number
JPS56126072A
JPS56126072A JP2991280A JP2991280A JPS56126072A JP S56126072 A JPS56126072 A JP S56126072A JP 2991280 A JP2991280 A JP 2991280A JP 2991280 A JP2991280 A JP 2991280A JP S56126072 A JPS56126072 A JP S56126072A
Authority
JP
Japan
Prior art keywords
turned
switch
main transformer
electromagnetic switch
thyristors
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
Application number
JP2991280A
Other languages
Japanese (ja)
Inventor
Koji Mizuno
Takao Shimizu
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP2991280A priority Critical patent/JPS56126072A/en
Publication of JPS56126072A publication Critical patent/JPS56126072A/en
Pending legal-status Critical Current

Links

Landscapes

  • Arc Welding Control (AREA)

Abstract

PURPOSE: To eliminae the no-load loss of the main transformer and the power loss due to the cooling fan, by providing the electromagnetic switch having an off delay circuit in the primary side of the main transformer in the arc welding machine of the system where the output is intermitted by the thyristor.
CONSTITUTION: Electromagnetic switch MC is provided in the primary side of the main transformer, and welding torch 20 is connected to the secondary side through thyristors 16aW16f, and trigger switch 24 which turns on thyristors and delay timer TD which is interlocked with switch 24 and is provided with the off delay function to control electromagnetic switch MC are installed. When trigger switch 24 is turned off, thyristors 16aW16f are turned off but electromagnetic switch MC is turned off with the delay of a fixed time; and therefore, if trigger switch 24 is not turned on again after a fixed time, the electromagnetic switch is turned off to eliminate the no-load loss of the main transformer and the power loss of colling fan 28.
COPYRIGHT: (C)1981,JPO&Japio
JP2991280A 1980-03-10 1980-03-10 Arc welding machine Pending JPS56126072A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2991280A JPS56126072A (en) 1980-03-10 1980-03-10 Arc welding machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2991280A JPS56126072A (en) 1980-03-10 1980-03-10 Arc welding machine

Publications (1)

Publication Number Publication Date
JPS56126072A true JPS56126072A (en) 1981-10-02

Family

ID=12289194

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2991280A Pending JPS56126072A (en) 1980-03-10 1980-03-10 Arc welding machine

Country Status (1)

Country Link
JP (1) JPS56126072A (en)

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