JPS5752569A - Arc welding machine - Google Patents

Arc welding machine

Info

Publication number
JPS5752569A
JPS5752569A JP12976780A JP12976780A JPS5752569A JP S5752569 A JPS5752569 A JP S5752569A JP 12976780 A JP12976780 A JP 12976780A JP 12976780 A JP12976780 A JP 12976780A JP S5752569 A JPS5752569 A JP S5752569A
Authority
JP
Japan
Prior art keywords
thyristors
primary
primary windings
welding machine
arc welding
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
JP12976780A
Other languages
Japanese (ja)
Inventor
Hideyuki Koyama
Junzo Tanimoto
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP12976780A priority Critical patent/JPS5752569A/en
Publication of JPS5752569A publication Critical patent/JPS5752569A/en
Pending legal-status Critical Current

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  • Arc Welding Control (AREA)

Abstract

PURPOSE: To provide an arc welding machine which improves the safety and reliability of the thyristors used, namely which is highly reliable, by controlling output voltage or output current through phase controlling of the thyristors connected to the primary sides of a welding transformer.
CONSTITUTION: An anti-parallel circuit of thyristors 1, 2 is inserted and connected between the first primary and secondary windings 4a, 4b of a welding transformer 3. As a result, the primary windings 4a, 4b share the voltages of V1, V2(V0=V1+ V2) respectively with respect to source voltage V0, and therefore the margins for the dielectric strength of the thyristors 1, 2 increase. The surge current flowing between the electric power source and the earth will flow always through either of the primary windings 4a, 4b with respect to the thyristors 1, 2, without flowing directly through the thyristors 1, 2 from the power source as shown by a dotted line. Hence, the primary windings 4a, 4b servce as impedance elements, thereby suppressing the surge current and improving the safety of the thyristors 1, 2.
COPYRIGHT: (C)1982,JPO&Japio
JP12976780A 1980-09-16 1980-09-16 Arc welding machine Pending JPS5752569A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12976780A JPS5752569A (en) 1980-09-16 1980-09-16 Arc welding machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12976780A JPS5752569A (en) 1980-09-16 1980-09-16 Arc welding machine

Publications (1)

Publication Number Publication Date
JPS5752569A true JPS5752569A (en) 1982-03-29

Family

ID=15017694

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12976780A Pending JPS5752569A (en) 1980-09-16 1980-09-16 Arc welding machine

Country Status (1)

Country Link
JP (1) JPS5752569A (en)

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