JPS5775565A - Preventing circuit for erroneous operation of gate turn-off thyristor - Google Patents

Preventing circuit for erroneous operation of gate turn-off thyristor

Info

Publication number
JPS5775565A
JPS5775565A JP55149479A JP14947980A JPS5775565A JP S5775565 A JPS5775565 A JP S5775565A JP 55149479 A JP55149479 A JP 55149479A JP 14947980 A JP14947980 A JP 14947980A JP S5775565 A JPS5775565 A JP S5775565A
Authority
JP
Japan
Prior art keywords
circuit
gate
erroneous operation
signal
high level
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
JP55149479A
Other languages
Japanese (ja)
Inventor
Katsuo Kobari
Keiji Sakamoto
Yoshiaki Hachisuga
Toshio Kobayashi
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.)
Fanuc Corp
Original Assignee
Fanuc Corp
Fujitsu Fanuc 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 Fanuc Corp, Fujitsu Fanuc Ltd filed Critical Fanuc Corp
Priority to JP55149479A priority Critical patent/JPS5775565A/en
Publication of JPS5775565A publication Critical patent/JPS5775565A/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
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
    • H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
    • H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M3/125—Conversion of dc power input into dc power output without intermediate conversion into ac 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
    • H02M3/135—Conversion of dc power input into dc power output without intermediate conversion into ac 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

Landscapes

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

Abstract

PURPOSE:To prevent the erroneous operation of a GTO thyristor by connecting the output terminal of a conductive time generator and the output of a timer circuit through an OR circuit to a gate trigger circuit. CONSTITUTION:When a GTO1 is transferred from a conductive state to non-conductive state in the state that the high level period of the output signal V3 of a conductive time signal generator 3 that a DC motor M is controlled at a low speed is shorter than a low level period, the output signal V3 of the generator 3 is maintained in high level state during special period of time in which the output signal of a timer circuit 4 is inhibited to apply an OFF signal to the gate of the GTO. Therefore, this high level signal is inputted through an OR circuit 5 to a gate trigger circuit 2, so that the gate trigger circuit 2 may not produce a negative pulse to the gate G. In this manner, the erroneous operation of the GTO can be effectively prevented.
JP55149479A 1980-10-27 1980-10-27 Preventing circuit for erroneous operation of gate turn-off thyristor Pending JPS5775565A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55149479A JPS5775565A (en) 1980-10-27 1980-10-27 Preventing circuit for erroneous operation of gate turn-off thyristor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55149479A JPS5775565A (en) 1980-10-27 1980-10-27 Preventing circuit for erroneous operation of gate turn-off thyristor

Publications (1)

Publication Number Publication Date
JPS5775565A true JPS5775565A (en) 1982-05-12

Family

ID=15476043

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55149479A Pending JPS5775565A (en) 1980-10-27 1980-10-27 Preventing circuit for erroneous operation of gate turn-off thyristor

Country Status (1)

Country Link
JP (1) JPS5775565A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007049900A (en) * 2006-11-27 2007-02-22 Toshiba Mitsubishi-Electric Industrial System Corp Controller of single-pulse single-phase bridge voltage self-exciting converter

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5388561A (en) * 1977-01-13 1978-08-04 Meidensha Electric Mfg Co Ltd Protecting method for gate turn-off thyristor

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5388561A (en) * 1977-01-13 1978-08-04 Meidensha Electric Mfg Co Ltd Protecting method for gate turn-off thyristor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007049900A (en) * 2006-11-27 2007-02-22 Toshiba Mitsubishi-Electric Industrial System Corp Controller of single-pulse single-phase bridge voltage self-exciting converter

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