JPS57151264A - Gate circuit for gate turn-off thyristor - Google Patents

Gate circuit for gate turn-off thyristor

Info

Publication number
JPS57151264A
JPS57151264A JP56036504A JP3650481A JPS57151264A JP S57151264 A JPS57151264 A JP S57151264A JP 56036504 A JP56036504 A JP 56036504A JP 3650481 A JP3650481 A JP 3650481A JP S57151264 A JPS57151264 A JP S57151264A
Authority
JP
Japan
Prior art keywords
gate
cathode
gto
voltage
thyristor
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
JP56036504A
Other languages
Japanese (ja)
Inventor
Kenji Koga
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 JP56036504A priority Critical patent/JPS57151264A/en
Publication of JPS57151264A publication Critical patent/JPS57151264A/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 reduce the capacity of a gate power source and to prevent the damage of a gate circuit by detecting a voltage between the gate and the cathode of a gate turn-off thyristor (GTO) connected in anti-parallel to a diode and flowing a gate current only when a gate voltage is higher than the cathode voltage. CONSTITUTION:One input terminal of an arithmetic amplifier 13 is connected to the gate of a GTO 4 through a resistor 17, and the other input is connected to the cathode of the GTO 4. The output terminal of the amplifier 13 is connected to one input terminal through a resistor 18, and is connected to the other input terminal of the amplifier 13 through resistors 19, 20. The base of a transistor (TR) 14 is connected to the connecting point of resistors 19, 20 through a resistor 21, and is connected to the cathode of a diode 22. In this manner, a gate current is flowed only when the voltage between the anode and the cathode of the GTO becomes forward, thereby reducing the capacity of a power source for the gate.
JP56036504A 1981-03-16 1981-03-16 Gate circuit for gate turn-off thyristor Pending JPS57151264A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56036504A JPS57151264A (en) 1981-03-16 1981-03-16 Gate circuit for gate turn-off thyristor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56036504A JPS57151264A (en) 1981-03-16 1981-03-16 Gate circuit for gate turn-off thyristor

Publications (1)

Publication Number Publication Date
JPS57151264A true JPS57151264A (en) 1982-09-18

Family

ID=12471647

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56036504A Pending JPS57151264A (en) 1981-03-16 1981-03-16 Gate circuit for gate turn-off thyristor

Country Status (1)

Country Link
JP (1) JPS57151264A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5077487A (en) * 1989-09-08 1991-12-31 Toyo Denki Seizo Kabushiki Kaisha Driver circuit for a large capacity switching element

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5077487A (en) * 1989-09-08 1991-12-31 Toyo Denki Seizo Kabushiki Kaisha Driver circuit for a large capacity switching element

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