JPS574379A - Power source device for welding - Google Patents

Power source device for welding

Info

Publication number
JPS574379A
JPS574379A JP7818380A JP7818380A JPS574379A JP S574379 A JPS574379 A JP S574379A JP 7818380 A JP7818380 A JP 7818380A JP 7818380 A JP7818380 A JP 7818380A JP S574379 A JPS574379 A JP S574379A
Authority
JP
Japan
Prior art keywords
current
pulse
goes
transistor
transistors
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
JP7818380A
Other languages
Japanese (ja)
Other versions
JPS6253270B2 (en
Inventor
Bunzo Ando
Giichiro Shimizu
Hisashi Asakura
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.)
Via Mechanics Ltd
Original Assignee
Hitachi Seiko 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 Seiko Ltd filed Critical Hitachi Seiko Ltd
Priority to JP7818380A priority Critical patent/JPS574379A/en
Publication of JPS574379A publication Critical patent/JPS574379A/en
Publication of JPS6253270B2 publication Critical patent/JPS6253270B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Arc Welding Control (AREA)

Abstract

PURPOSE: To obtain the stable arc without damaging transistors by using a switching element which conducts during the pulse time of a required pulse frequency or the time until the peak current of required pulses is attained.
CONSTITUTION: When a transistor Q2 is turned off by the signal from a pulse generator 16 transistors Q3, Q4 go on, and a switching transistor 9 goes on. Therefore, the pulse current of a high peak current value flows in the TR9 by a pulse generator 16 while the TRQ2 is off, ad this current is supplied between an electrode 6 and base metals 7. When overcurrent flows in the TR9, it is detected by a current detector 12, a comparing amplifier 14 produces an output, and a transistor Q1 goes on. The TRs Q3, Q4 go on, the TR9 goes on, and the output current of the TR9 is cut off.
COPYRIGHT: (C)1982,JPO&Japio
JP7818380A 1980-06-10 1980-06-10 Power source device for welding Granted JPS574379A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7818380A JPS574379A (en) 1980-06-10 1980-06-10 Power source device for welding

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7818380A JPS574379A (en) 1980-06-10 1980-06-10 Power source device for welding

Publications (2)

Publication Number Publication Date
JPS574379A true JPS574379A (en) 1982-01-09
JPS6253270B2 JPS6253270B2 (en) 1987-11-10

Family

ID=13654851

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7818380A Granted JPS574379A (en) 1980-06-10 1980-06-10 Power source device for welding

Country Status (1)

Country Link
JP (1) JPS574379A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4928010A (en) * 1986-11-28 1990-05-22 Nippon Telegraph And Telephone Corp. Observing a surface using a charged particle beam

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5440500A (en) * 1977-09-05 1979-03-29 Kato Kouji Airfield

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5440500A (en) * 1977-09-05 1979-03-29 Kato Kouji Airfield

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4928010A (en) * 1986-11-28 1990-05-22 Nippon Telegraph And Telephone Corp. Observing a surface using a charged particle beam

Also Published As

Publication number Publication date
JPS6253270B2 (en) 1987-11-10

Similar Documents

Publication Publication Date Title
JPS5620313A (en) Electric power amplifier
JPS56117409A (en) Amplifying device
JPS574379A (en) Power source device for welding
JPS5425145A (en) Detection circuit for unbalanced dc voltage of output amplifier on two-power- supply system
JPS51127671A (en) Power supply for electron gun
JPS5719164A (en) Pulse arc welding device
JPS5719171A (en) Pulse arc welding device
JPS5719182A (en) Pulse arc welding machine
JPS5597875A (en) Transistor direct current power supply for welding
JPS53104549A (en) Arc welder
JPS566790A (en) Controlling method of flash welding machine
JPS57165177A (en) Method and device for controlling electric power source for pulse arc welding
JPS57106915A (en) Constant current circuit
JPS5416345A (en) Automatic welding method for holding constant arc length
JPS5484845A (en) Control method and apparatus for welding arc heat
JPS5414282A (en) Battery voltage detecting circuit
JPS5719162A (en) Pulse arc welding machine
JPS5719179A (en) Pulse arc welding machine
JPS5379243A (en) Current detecting circuit for constant current supplying board
JPS55161474A (en) Initial channel set unit
JPS53149143A (en) Method and apparatus for holding constant arc length in pulsed arc welding
JPS5371337A (en) Arc furnace controlling device
JPS56114580A (en) Arc welding power supplying device
JPS5619306A (en) Controller for electric rolling stock
JPS5577976A (en) Pulse arc welding method