JPS5725158A - Synchronous pulse generating circuit for driving thyristor - Google Patents

Synchronous pulse generating circuit for driving thyristor

Info

Publication number
JPS5725158A
JPS5725158A JP9746180A JP9746180A JPS5725158A JP S5725158 A JPS5725158 A JP S5725158A JP 9746180 A JP9746180 A JP 9746180A JP 9746180 A JP9746180 A JP 9746180A JP S5725158 A JPS5725158 A JP S5725158A
Authority
JP
Japan
Prior art keywords
synchronous pulse
generating circuit
constant current
pulse generating
circuit
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
JP9746180A
Other languages
Japanese (ja)
Inventor
Yoshitoku Kozai
Katsuo Kobari
Keiji Sakamoto
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 JP9746180A priority Critical patent/JPS5725158A/en
Publication of JPS5725158A publication Critical patent/JPS5725158A/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
    • H02M1/08—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Power Conversion In General (AREA)

Abstract

PURPOSE:To obtain a synchronous pulse generating circuit which does not cause an erroneous operation by integrating the constant current of the waveform superposed with noise. CONSTITUTION:The power voltage of an input terminal 36 is compared with zero volt potential by a comparator 31. The output of the comparator 31 is supplied via a constant current integrating circuit 32 to comparators 33, 34, and is comapred with reference voltages Vref1 and Vref2. Then, a synchronous pulse can be obtained by an OR gate 35 from the logic sum of the outputs of the comparators 33, 34. Even if noise is superposed, it is reduced by the constant current integration by this circuit, and less affects the influence to the output synchronous pulse.
JP9746180A 1980-07-18 1980-07-18 Synchronous pulse generating circuit for driving thyristor Pending JPS5725158A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9746180A JPS5725158A (en) 1980-07-18 1980-07-18 Synchronous pulse generating circuit for driving thyristor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9746180A JPS5725158A (en) 1980-07-18 1980-07-18 Synchronous pulse generating circuit for driving thyristor

Publications (1)

Publication Number Publication Date
JPS5725158A true JPS5725158A (en) 1982-02-09

Family

ID=14192937

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9746180A Pending JPS5725158A (en) 1980-07-18 1980-07-18 Synchronous pulse generating circuit for driving thyristor

Country Status (1)

Country Link
JP (1) JPS5725158A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5317262A (en) * 1976-08-02 1978-02-17 Hitachi Ltd Automatic pulse phase shifter
JPS5423952A (en) * 1977-07-25 1979-02-22 Fuji Electric Co Ltd Firing angle control circuit

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5317262A (en) * 1976-08-02 1978-02-17 Hitachi Ltd Automatic pulse phase shifter
JPS5423952A (en) * 1977-07-25 1979-02-22 Fuji Electric Co Ltd Firing angle control circuit

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