JPS5736071A - Electric power source device for welding machine - Google Patents

Electric power source device for welding machine

Info

Publication number
JPS5736071A
JPS5736071A JP11026280A JP11026280A JPS5736071A JP S5736071 A JPS5736071 A JP S5736071A JP 11026280 A JP11026280 A JP 11026280A JP 11026280 A JP11026280 A JP 11026280A JP S5736071 A JPS5736071 A JP S5736071A
Authority
JP
Japan
Prior art keywords
thyristors
converter
constant voltage
period
output
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
JP11026280A
Other languages
Japanese (ja)
Other versions
JPS622910B2 (en
Inventor
Daisaku Morinaga
Nobunori Matsudaira
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 JP11026280A priority Critical patent/JPS5736071A/en
Publication of JPS5736071A publication Critical patent/JPS5736071A/en
Publication of JPS622910B2 publication Critical patent/JPS622910B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Control Of Voltage And Current In General (AREA)

Abstract

PURPOSE: To make the circuit constitution of a titled device simple and make the constant voltage controlling of fast response speeds possible by obtaining the feedback voltage for the purpose of performing the constant voltage controlling from the input side of thyristors, and inputting the output of a service interruption detecting circuit directly to an A/D converter.
CONSTITUTION: The output from a service interruption detecting circuit 11 is inputted directly to an A/D converter 19. This input signal to the converter 19 does not have zero voltage even in the period when thyristors 2, 3 are not conducting and assumes a sine waveform. With respect to constant voltage control operation, the taking-in operation of voltage is accomplished only in the period when the thyristors 2, 3 are actually conducting. The period when the thyristors 2, 3 conduct and electric current is flowed to load by a welding machine 8 via a welding transformer 7 is discriminated by a transformer 5 which detects the voltages across the thyristors 2, 3. The feedback output from the converter 19 is inputted to the thyristors 2, 3 via a pulse amplifier circuit 13 at prescribed short sampling periods, to change the phases of the firing pulses of the thyristors 2, 3, whereby constant voltage controlling is accomplished.
COPYRIGHT: (C)1982,JPO&Japio
JP11026280A 1980-08-13 1980-08-13 Electric power source device for welding machine Granted JPS5736071A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11026280A JPS5736071A (en) 1980-08-13 1980-08-13 Electric power source device for welding machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11026280A JPS5736071A (en) 1980-08-13 1980-08-13 Electric power source device for welding machine

Publications (2)

Publication Number Publication Date
JPS5736071A true JPS5736071A (en) 1982-02-26
JPS622910B2 JPS622910B2 (en) 1987-01-22

Family

ID=14531226

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11026280A Granted JPS5736071A (en) 1980-08-13 1980-08-13 Electric power source device for welding machine

Country Status (1)

Country Link
JP (1) JPS5736071A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2023160421A (en) 2022-04-22 2023-11-02 サントリーホールディングス株式会社 Collection equipment and material supply system

Also Published As

Publication number Publication date
JPS622910B2 (en) 1987-01-22

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