JPS5586374A - Gate phase control circuit for thyristor - Google Patents

Gate phase control circuit for thyristor

Info

Publication number
JPS5586374A
JPS5586374A JP16040478A JP16040478A JPS5586374A JP S5586374 A JPS5586374 A JP S5586374A JP 16040478 A JP16040478 A JP 16040478A JP 16040478 A JP16040478 A JP 16040478A JP S5586374 A JPS5586374 A JP S5586374A
Authority
JP
Japan
Prior art keywords
thyristor
voltage
gate
zener
diode
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
JP16040478A
Other languages
Japanese (ja)
Inventor
Yozo Sanaka
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP16040478A priority Critical patent/JPS5586374A/en
Publication of JPS5586374A publication Critical patent/JPS5586374A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To prevent the faulty ignition of a bidirectional triode thyristor, by connecting a phototransistor between the gate of the thyristor and a gate power source and opening or closing the phototransistor synchronously with AC power applied to terminals of the thyristor.
CONSTITUTION: A full-wave-rectified voltage synchronized with the voltage of AC power 1 is supplied from a full wave rectification circuit B to a series circuit comprising a Zener diode 19, a light emitting diode of a photocoupler 21 and a resistor 20. When the full-wave-rectified voltage exceeds the Zener voltage of the Zener diode 19, this diode is closed and a current shown in (d) of Fig. flows through the light emitting diode of the photocoupler 21. A float angle θ, at which a gate signal which is supplied to the gate of a triode AC switch 3 before a voltage applied to the switch becomes zero is cut off, depends on the Zener voltage of the Zener diode 19 and the resistance of the resistor 20.
COPYRIGHT: (C)1980,JPO&Japio
JP16040478A 1978-12-25 1978-12-25 Gate phase control circuit for thyristor Pending JPS5586374A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16040478A JPS5586374A (en) 1978-12-25 1978-12-25 Gate phase control circuit for thyristor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16040478A JPS5586374A (en) 1978-12-25 1978-12-25 Gate phase control circuit for thyristor

Publications (1)

Publication Number Publication Date
JPS5586374A true JPS5586374A (en) 1980-06-30

Family

ID=15714198

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16040478A Pending JPS5586374A (en) 1978-12-25 1978-12-25 Gate phase control circuit for thyristor

Country Status (1)

Country Link
JP (1) JPS5586374A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57206930A (en) * 1981-06-15 1982-12-18 Matsushita Electric Works Ltd Phase controlling circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57206930A (en) * 1981-06-15 1982-12-18 Matsushita Electric Works Ltd Phase controlling circuit

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