JPS56166764A - Turn-off controlling circuit for gto thyristor - Google Patents

Turn-off controlling circuit for gto thyristor

Info

Publication number
JPS56166764A
JPS56166764A JP6845680A JP6845680A JPS56166764A JP S56166764 A JPS56166764 A JP S56166764A JP 6845680 A JP6845680 A JP 6845680A JP 6845680 A JP6845680 A JP 6845680A JP S56166764 A JPS56166764 A JP S56166764A
Authority
JP
Japan
Prior art keywords
current
turn
thyristor
transistor
gate
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
JP6845680A
Other languages
Japanese (ja)
Inventor
Tetsuo Sueoka
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.)
Meidensha Electric Manufacturing Co Ltd
Original Assignee
Meidensha Electric Manufacturing Co 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 Meidensha Electric Manufacturing Co Ltd filed Critical Meidensha Electric Manufacturing Co Ltd
Priority to JP6845680A priority Critical patent/JPS56166764A/en
Publication of JPS56166764A publication Critical patent/JPS56166764A/en
Pending 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
    • H02M1/00—Details of apparatus for conversion
    • H02M1/06—Circuits specially adapted for rendering non-conductive gas discharge tubes or equivalent semiconductor devices, e.g. thyratrons, thyristors

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Power Conversion In General (AREA)
  • Thyristor Switches And Gates (AREA)

Abstract

PURPOSE:To maintain the turn-off gain of a GTO thyristor constantly by controlling the reverse voltage applied between the gate and the cathode of the thyristor to a value proportional to the main current of the thyristor and supplying the turn-off current. CONSTITUTION:When a turn-off controlling pulse is given, a base current controlling circuit 17 serves to control a transistor 15 in response to the detected current of a current detector 16. The transistor 15 is controlled at its base current to operate as a variable resistor, the current flowed from a DC power source 14 to the gate of a GTO thyristor 1 is limited by the transistor 15, and thus becomes a gate current corresponding to the main current of the thyristor 11, thereby maintaining the turn- off gain of the thyristor constantly.
JP6845680A 1980-05-23 1980-05-23 Turn-off controlling circuit for gto thyristor Pending JPS56166764A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6845680A JPS56166764A (en) 1980-05-23 1980-05-23 Turn-off controlling circuit for gto thyristor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6845680A JPS56166764A (en) 1980-05-23 1980-05-23 Turn-off controlling circuit for gto thyristor

Publications (1)

Publication Number Publication Date
JPS56166764A true JPS56166764A (en) 1981-12-22

Family

ID=13374211

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6845680A Pending JPS56166764A (en) 1980-05-23 1980-05-23 Turn-off controlling circuit for gto thyristor

Country Status (1)

Country Link
JP (1) JPS56166764A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61113321A (en) * 1984-11-07 1986-05-31 Toyo Electric Mfg Co Ltd Gate control for electrostatic induction thyristor

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS424909Y1 (en) * 1964-06-03 1967-03-14
JPS54127269A (en) * 1978-03-27 1979-10-03 Toshiba Corp Gate circuit of gate turn-off thyristor

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS424909Y1 (en) * 1964-06-03 1967-03-14
JPS54127269A (en) * 1978-03-27 1979-10-03 Toshiba Corp Gate circuit of gate turn-off thyristor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61113321A (en) * 1984-11-07 1986-05-31 Toyo Electric Mfg Co Ltd Gate control for electrostatic induction thyristor

Similar Documents

Publication Publication Date Title
JPS56166764A (en) Turn-off controlling circuit for gto thyristor
FR2208753A1 (en) Welding current generator circuit - with regulation and control system
JPS5362974A (en) Gate control circuit of gate turn off thyristor
JPS5510267A (en) Switching circuit
JPS5775033A (en) Gate circuit for gate turn-off thyristor
JPS5543657A (en) Variable voltage output circuit
JPS5333346A (en) Controlling power supply circuit
JPS5775032A (en) Gate circuit for gate turn-off thyristor
JPS57137910A (en) Lamp supply voltage controller of copying machine
JPS5669908A (en) Field effect transistor circuit with protecting circuit
CS557186A1 (en) Device for magnetic-pulse acting on ferromagnetic materials
JPS57127214A (en) Temperature controlling device
JPS57153571A (en) Controller for inverter
JPS57189446A (en) High-voltage generating power source
JPS57134726A (en) Conduction controller for lattice control rectifying element
JPS56159969A (en) Transistor driving circuit
JPS54113833A (en) Power converter
JPS558222A (en) Dc motor drive controller
FR2267654A1 (en) Power supply and control assembly
JPS57134725A (en) Conduction controller for lattice control rectifying element
JPS5454263A (en) A.c. power regulator circuit
JPS5627420A (en) Constant-voltage electric power source circuit
JPS57211979A (en) Variable output voltage type dc/dc converter
JPS5360156A (en) Gate control system for gate turn-off thyristor
JPS57204164A (en) Protective device for gate turn-off thyristor