FR2238557A1 - Welding current supply circuit - bridge circuit has two thyristor stages to control feed current and rectify A.C. current - Google Patents

Welding current supply circuit - bridge circuit has two thyristor stages to control feed current and rectify A.C. current

Info

Publication number
FR2238557A1
FR2238557A1 FR7425586A FR7425586A FR2238557A1 FR 2238557 A1 FR2238557 A1 FR 2238557A1 FR 7425586 A FR7425586 A FR 7425586A FR 7425586 A FR7425586 A FR 7425586A FR 2238557 A1 FR2238557 A1 FR 2238557A1
Authority
FR
France
Prior art keywords
current
thyristor
rectify
circuit
control
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
FR7425586A
Other languages
French (fr)
Other versions
FR2238557B3 (en
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.)
Union Carbide Corp
Original Assignee
Union Carbide Corp
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 Union Carbide Corp filed Critical Union Carbide Corp
Publication of FR2238557A1 publication Critical patent/FR2238557A1/en
Application granted granted Critical
Publication of FR2238557B3 publication Critical patent/FR2238557B3/fr
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00—Arc welding or cutting
    • B23K9/10—Other electric circuits therefor; Protective circuits; Remote controls
    • B23K9/1006—Power supply

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Mechanical Engineering (AREA)
  • Arc Welding Control (AREA)

Abstract

Welding current supply with a transformer to convert an applied high a.c. voltage into a low a.c. current of up to 400 amps, has also a full-wave bridge rectifier circuit to convert the low voltage a.c. current into an output d.c. current. The bridge rectifier circuit has at least two thyristors to control the current feed to the bridge circuit and simultaneously to rectify the low voltage a.c. current. A drive arrangement acts on a control signal to control each of the thyristor stages during each a.c. cycle and cuts off the thyristor stages after the fading of the control signal. Each thyristor stage has an anode, a cathode and a control electrode and the drive arrangement has a further thyristor for each thyristor stage.
FR7425586A 1973-07-24 1974-07-23 Welding current supply circuit - bridge circuit has two thyristor stages to control feed current and rectify A.C. current Granted FR2238557A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US38206473A 1973-07-24 1973-07-24

Publications (2)

Publication Number Publication Date
FR2238557A1 true FR2238557A1 (en) 1975-02-21
FR2238557B3 FR2238557B3 (en) 1977-05-20

Family

ID=23507394

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7425586A Granted FR2238557A1 (en) 1973-07-24 1974-07-23 Welding current supply circuit - bridge circuit has two thyristor stages to control feed current and rectify A.C. current

Country Status (4)

Country Link
JP (1) JPS5044143A (en)
DE (1) DE2435442A1 (en)
ES (1) ES428529A1 (en)
FR (1) FR2238557A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5373949A (en) * 1976-12-13 1978-06-30 Fujitsu Ltd Supply circuit of square wave large current pulse

Also Published As

Publication number Publication date
ES428529A1 (en) 1976-08-16
FR2238557B3 (en) 1977-05-20
JPS5044143A (en) 1975-04-21
DE2435442A1 (en) 1975-02-13

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Legal Events

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