JPS561272A - Direct current welding electric power source device - Google Patents

Direct current welding electric power source device

Info

Publication number
JPS561272A
JPS561272A JP7741879A JP7741879A JPS561272A JP S561272 A JPS561272 A JP S561272A JP 7741879 A JP7741879 A JP 7741879A JP 7741879 A JP7741879 A JP 7741879A JP S561272 A JPS561272 A JP S561272A
Authority
JP
Japan
Prior art keywords
output
direct current
frequency
transistors
transformer
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
JP7741879A
Other languages
Japanese (ja)
Inventor
Yoriaki Nishida
Hisao Tsunaga
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 JP7741879A priority Critical patent/JPS561272A/en
Publication of JPS561272A publication Critical patent/JPS561272A/en
Pending legal-status Critical Current

Links

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  • Arc Welding Control (AREA)

Abstract

PURPOSE: To enable easy output controlling with simple circuits by inputting direct current after smoothing the same to make the frequency of the bridge inverter circuit having a transformer as its load constant and specifying the variable range of the quiescent time.
CONSTITUTION: Alternating current input is full-wave rectified by a diode and is smoothed by a capacitor C1. The resultant direct current output is connected to the bridge inverter circuit. Thereupon, alternating current is flowed to the primary side of a transformer Tr by the repetition of alternate ON and OFF of two sets of transistors and the secondary side output is connected to the arc load. The transistors Q1, Q4 are simultaneously turned ON by base circuits B1, B4 and are simultaneously turned OFF. When the inverter frequency is made constant, the periods when they can conduct become 0W1/2 period. The same holds ture of the elements Q2, Q3, thus by making the inverter quiescent time when all the elements go OFF variable to half the period of the maximum modulation frequency, the output is decreased from the maximum output state A showing conduction state S subsequently to B, C, thus output controlling may be performed.
COPYRIGHT: (C)1981,JPO&Japio
JP7741879A 1979-06-18 1979-06-18 Direct current welding electric power source device Pending JPS561272A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7741879A JPS561272A (en) 1979-06-18 1979-06-18 Direct current welding electric power source device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7741879A JPS561272A (en) 1979-06-18 1979-06-18 Direct current welding electric power source device

Publications (1)

Publication Number Publication Date
JPS561272A true JPS561272A (en) 1981-01-08

Family

ID=13633398

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7741879A Pending JPS561272A (en) 1979-06-18 1979-06-18 Direct current welding electric power source device

Country Status (1)

Country Link
JP (1) JPS561272A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58107266A (en) * 1981-12-18 1983-06-25 Hitachi Seiko Ltd Electric power source for welding

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58107266A (en) * 1981-12-18 1983-06-25 Hitachi Seiko Ltd Electric power source for welding

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