JPS54131548A - Power source for porality reversal pulse arc welder - Google Patents

Power source for porality reversal pulse arc welder

Info

Publication number
JPS54131548A
JPS54131548A JP3918978A JP3918978A JPS54131548A JP S54131548 A JPS54131548 A JP S54131548A JP 3918978 A JP3918978 A JP 3918978A JP 3918978 A JP3918978 A JP 3918978A JP S54131548 A JPS54131548 A JP S54131548A
Authority
JP
Japan
Prior art keywords
frequency pulse
low frequency
high frequency
porality
synchronized
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
JP3918978A
Other languages
Japanese (ja)
Inventor
Moritaka Shoji
Juichiro Usuki
Tomohiko Shida
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP3918978A priority Critical patent/JPS54131548A/en
Publication of JPS54131548A publication Critical patent/JPS54131548A/en
Pending legal-status Critical Current

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  • Arc Welding Control (AREA)

Abstract

PURPOSE: In transistor base bias, high frequency pulse and low frequency pulse are synchronized to remove the irregularity of high frequency pulse at porality reversal, thereby to eliminate arc extinguish so that good welding can be performed.
CONSTITUTION: Low frequency oscillator 10 generates low frequency pulse and high frequency oscillator 11 generates high frequency pulse. Both waveforms are synchronized by sychronizer 40 and insulated by insulator 41. The synchronized high and low frequency pulses are fed to standard voltage input terminals of comparators 14 and 16, respectively. Both waveforms are amplified by amplifiers 17, 18 and fed to the bases of transistors 3, 4 respectively where the currents are restricted. Welding current consists of SP time by constant-voltage source 1 and RP time by constant-current voltage source 2, SP pulse portion being superposed with d.c. as base current, and the current waveform is restricted by the transistors 3, 4.
COPYRIGHT: (C)1979,JPO&Japio
JP3918978A 1978-04-05 1978-04-05 Power source for porality reversal pulse arc welder Pending JPS54131548A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3918978A JPS54131548A (en) 1978-04-05 1978-04-05 Power source for porality reversal pulse arc welder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3918978A JPS54131548A (en) 1978-04-05 1978-04-05 Power source for porality reversal pulse arc welder

Publications (1)

Publication Number Publication Date
JPS54131548A true JPS54131548A (en) 1979-10-12

Family

ID=12546152

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3918978A Pending JPS54131548A (en) 1978-04-05 1978-04-05 Power source for porality reversal pulse arc welder

Country Status (1)

Country Link
JP (1) JPS54131548A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6018275A (en) * 1983-07-11 1985-01-30 Sansha Electric Mfg Co Ltd Power source device for arc welding machine
JPS6320168A (en) * 1986-07-15 1988-01-27 Nippon Steel Corp Power source feeder for both ac and dc for arc welding
US6225598B1 (en) 1997-07-09 2001-05-01 Hitachi, Ltd. Method of high frequency pulse arc welding and apparatus therefor
EP3244522A1 (en) * 2016-05-10 2017-11-15 Beihang University Ultrasonic-frequency pulsed gmaw welding power source device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6018275A (en) * 1983-07-11 1985-01-30 Sansha Electric Mfg Co Ltd Power source device for arc welding machine
JPS6320168A (en) * 1986-07-15 1988-01-27 Nippon Steel Corp Power source feeder for both ac and dc for arc welding
JPH0371940B2 (en) * 1986-07-15 1991-11-15 Nippon Steel Corp
US6225598B1 (en) 1997-07-09 2001-05-01 Hitachi, Ltd. Method of high frequency pulse arc welding and apparatus therefor
EP3244522A1 (en) * 2016-05-10 2017-11-15 Beihang University Ultrasonic-frequency pulsed gmaw welding power source device

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