JPS5629463A - Ac zerovolt switching circuit - Google Patents

Ac zerovolt switching circuit

Info

Publication number
JPS5629463A
JPS5629463A JP10382279A JP10382279A JPS5629463A JP S5629463 A JPS5629463 A JP S5629463A JP 10382279 A JP10382279 A JP 10382279A JP 10382279 A JP10382279 A JP 10382279A JP S5629463 A JPS5629463 A JP S5629463A
Authority
JP
Japan
Prior art keywords
photo
gate
transistor
oscillation element
switching 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
JP10382279A
Other languages
Japanese (ja)
Inventor
Yukio Iitaka
Toshiro Abe
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.)
Panasonic Electric Works Co Ltd
Original Assignee
Matsushita Electric Works 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 Matsushita Electric Works Ltd filed Critical Matsushita Electric Works Ltd
Priority to JP10382279A priority Critical patent/JPS5629463A/en
Publication of JPS5629463A publication Critical patent/JPS5629463A/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
    • H03K17/13—Modifications for switching at zero crossing
    • H03K17/136—Modifications for switching at zero crossing in thyristor switches

Landscapes

  • Power Conversion In General (AREA)
  • Electronic Switches (AREA)

Abstract

PURPOSE:To prevent the circuit from erroneous operation in response to noises from the outside and surges etc. by a method wherein a phototransistor or relay for prevention of erroneous working is inserted between the emittor of a photo-oscillation element and the gate of an auxiliary thyristor. CONSTITUTION:When an input signal is received, the phototransistor 11 is in ON condition, and a transistor 14 is put in OFF condition. When a source voltage drops under Zener voltage and a photo-oscillation element 6 turn on, the currents flow into the gate of the auxiliary thyristor 5 through a resistor 13 to turn the switching circuit on. When no input signal is received, the phototransistor 11 is put in OFF condition. At this time, even if the photo-oscillation element 6 makes an errneous works caused by the outside noises and serges, part of the currents flowing into the gate turns transistor 14 on passing thru a transistor 15 and the transistor 14 absorbs most of currents flow into the photo-oscillation element 6, so that no current flows into the gate of auxiliary thyristor 5 nor the switching circuit is erroneously operated.
JP10382279A 1979-08-15 1979-08-15 Ac zerovolt switching circuit Pending JPS5629463A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10382279A JPS5629463A (en) 1979-08-15 1979-08-15 Ac zerovolt switching circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10382279A JPS5629463A (en) 1979-08-15 1979-08-15 Ac zerovolt switching circuit

Publications (1)

Publication Number Publication Date
JPS5629463A true JPS5629463A (en) 1981-03-24

Family

ID=14364096

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10382279A Pending JPS5629463A (en) 1979-08-15 1979-08-15 Ac zerovolt switching circuit

Country Status (1)

Country Link
JP (1) JPS5629463A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20200006009A (en) 2018-07-09 2020-01-17 도요타 지도샤（주） Compression-ignition internal combustion engine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20200006009A (en) 2018-07-09 2020-01-17 도요타 지도샤（주） Compression-ignition internal combustion engine

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