JPS5722374A - Trigger circuit for thyristor - Google Patents

Trigger circuit for thyristor

Info

Publication number
JPS5722374A
JPS5722374A JP9564680A JP9564680A JPS5722374A JP S5722374 A JPS5722374 A JP S5722374A JP 9564680 A JP9564680 A JP 9564680A JP 9564680 A JP9564680 A JP 9564680A JP S5722374 A JPS5722374 A JP S5722374A
Authority
JP
Japan
Prior art keywords
trigger
thyristor
power source
electric power
source voltage
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
JP9564680A
Other languages
Japanese (ja)
Inventor
Osamu Motoyoshi
Shigeo Konishi
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.)
Fuji Electric Co Ltd
Original Assignee
Fuji Electric 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 Fuji Electric Co Ltd filed Critical Fuji Electric Co Ltd
Priority to JP9564680A priority Critical patent/JPS5722374A/en
Publication of JPS5722374A publication Critical patent/JPS5722374A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
    • H03K17/78—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used using opto-electronic devices, i.e. light-emitting and photoelectric devices electrically- or optically-coupled
    • H03K17/79—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used using opto-electronic devices, i.e. light-emitting and photoelectric devices electrically- or optically-coupled controlling bipolar semiconductor switches with more than two PN-junctions, or more than three electrodes, or more than one electrode connected to the same conductivity region

Landscapes

  • Power Conversion In General (AREA)
  • Thyristor Switches And Gates (AREA)

Abstract

PURPOSE:To obtain a gate current having sufficient quantity and width for the trigger circuit of a thyristor by a method wherein an electric power source voltage for trigger is obtained from both ends of the capacitor in an RC snubber circuit, and moreover a Zener diode is connected between the gate and cathode of the main thyristor. CONSTITUTION:When a photo auxiliary thyristor PTH is conducting by optical control and the main thyristor TH is not triggered, a voltage stored in the capacitor C in the RC snubber circuit is supplied to the gate electrode of the main thyristor TH through protective resistors RD, RG to insure constantly the necessary electric power source voltage for trigger. Moreover because the electric power source voltage for trigger is held at the necessary constant voltage value by the Zener diode ZD, the gate pulse current having constantly sufficient quantity and width can be obtained irrelevant to phase deviation of the electric power source voltage for trigger.
JP9564680A 1980-07-15 1980-07-15 Trigger circuit for thyristor Pending JPS5722374A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9564680A JPS5722374A (en) 1980-07-15 1980-07-15 Trigger circuit for thyristor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9564680A JPS5722374A (en) 1980-07-15 1980-07-15 Trigger circuit for thyristor

Publications (1)

Publication Number Publication Date
JPS5722374A true JPS5722374A (en) 1982-02-05

Family

ID=14143261

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9564680A Pending JPS5722374A (en) 1980-07-15 1980-07-15 Trigger circuit for thyristor

Country Status (1)

Country Link
JP (1) JPS5722374A (en)

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