FR2220922A1 - Switch triggering indicating controller - for supply of max. power pulses to resistance welder - Google Patents

Switch triggering indicating controller - for supply of max. power pulses to resistance welder

Info

Publication number
FR2220922A1
FR2220922A1 FR7307887A FR7307887A FR2220922A1 FR 2220922 A1 FR2220922 A1 FR 2220922A1 FR 7307887 A FR7307887 A FR 7307887A FR 7307887 A FR7307887 A FR 7307887A FR 2220922 A1 FR2220922 A1 FR 2220922A1
Authority
FR
France
Prior art keywords
switch
terminals
impedance
half cycle
resistance welder
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
FR7307887A
Other languages
French (fr)
Other versions
FR2220922B1 (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.)
ARO SA
Original Assignee
ARO SA
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 ARO SA filed Critical ARO SA
Priority to FR7307887A priority Critical patent/FR2220922A1/en
Publication of FR2220922A1 publication Critical patent/FR2220922A1/en
Application granted granted Critical
Publication of FR2220922B1 publication Critical patent/FR2220922B1/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
    • H02M5/02—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc
    • H02M5/04—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters
    • H02M5/22—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M5/25—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means
    • H02M5/257—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only
    • H02M5/2573—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only with control circuit

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Arc Welding Control (AREA)

Abstract

Indicating control device is for the instant in each half cycle of an alternating potential supplied by a source, at which triggering takes place of a switch arranged in series with an impedance, which together with the switch is connected to the terminals of the a.c. source. Control is secured as a function of the lag or time dephasing, w.r.t. the alternating potential, of the current intensity in the impedance when the controlled switches are permanent conductors, partic. where the impedance is the prim. of a transformer, the sec. of which supplies welding pulses to a resistance welder. Indicating devices consist of an indicating element and means for connecting this to the terminals of the switch means, the indicating element being designed to emit (1) a signal of a first value when an alternating potential appears at the switch terminals for a time during each half cycle, at least equal to a predetermined period and (ii) a signal of a second value differing from the first when the potential across the terminals of the switch is not zero in each half cycle, for a time at most equal to the predetermined period.
FR7307887A 1973-03-06 1973-03-06 Switch triggering indicating controller - for supply of max. power pulses to resistance welder Granted FR2220922A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7307887A FR2220922A1 (en) 1973-03-06 1973-03-06 Switch triggering indicating controller - for supply of max. power pulses to resistance welder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7307887A FR2220922A1 (en) 1973-03-06 1973-03-06 Switch triggering indicating controller - for supply of max. power pulses to resistance welder

Publications (2)

Publication Number Publication Date
FR2220922A1 true FR2220922A1 (en) 1974-10-04
FR2220922B1 FR2220922B1 (en) 1977-04-22

Family

ID=9115833

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7307887A Granted FR2220922A1 (en) 1973-03-06 1973-03-06 Switch triggering indicating controller - for supply of max. power pulses to resistance welder

Country Status (1)

Country Link
FR (1) FR2220922A1 (en)

Also Published As

Publication number Publication date
FR2220922B1 (en) 1977-04-22

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Legal Events

Date Code Title Description
ST Notification of lapse