JPS55138927A - Photo-coupling semiconductor switch device - Google Patents

Photo-coupling semiconductor switch device

Info

Publication number
JPS55138927A
JPS55138927A JP4780179A JP4780179A JPS55138927A JP S55138927 A JPS55138927 A JP S55138927A JP 4780179 A JP4780179 A JP 4780179A JP 4780179 A JP4780179 A JP 4780179A JP S55138927 A JPS55138927 A JP S55138927A
Authority
JP
Japan
Prior art keywords
current
transistor
photo
light
turning
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.)
Granted
Application number
JP4780179A
Other languages
Japanese (ja)
Other versions
JPS6348208B2 (en
Inventor
Masahiko Akamatsu
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP4780179A priority Critical patent/JPS55138927A/en
Publication of JPS55138927A publication Critical patent/JPS55138927A/en
Publication of JPS6348208B2 publication Critical patent/JPS6348208B2/ja
Granted 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
    • H03K17/795—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 transistors
    • H03K17/7955—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 transistors using phototransistors

Landscapes

  • Electronic Switches (AREA)

Abstract

PURPOSE:To make it possible to elevate a turn ON switching speed, by reinforcing light emission from the light emitting means at the first stage in which a photo- sensitive semiconductor switch conducts. CONSTITUTION:Current i4 is delivered to the light emitting element 4 from the light emission control means 50 which causes conduction between the main switch terminals C-E, the light is emitted from the element 4, the light is irradiated to the photo-transistor 3, the current of the photo-transistor 3 is amplified by the amplifying transistor 2, and is delivered to the base of the main transistor 1. When the transistor 55 is made conducting in order to make the current i4A flow into the light emitting element 4, the current which has added the continuous current i42 and the first stage reinforcing current i41 which is an electric discharging current from the capacitor 54 flows at the first stage of turning ON, therefore it is possible to prevent the breakdown caused by a switching loss when turning ON in the high voltage circuit, reducing a drop of turning ON speed.
JP4780179A 1979-04-17 1979-04-17 Photo-coupling semiconductor switch device Granted JPS55138927A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4780179A JPS55138927A (en) 1979-04-17 1979-04-17 Photo-coupling semiconductor switch device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4780179A JPS55138927A (en) 1979-04-17 1979-04-17 Photo-coupling semiconductor switch device

Publications (2)

Publication Number Publication Date
JPS55138927A true JPS55138927A (en) 1980-10-30
JPS6348208B2 JPS6348208B2 (en) 1988-09-28

Family

ID=12785464

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4780179A Granted JPS55138927A (en) 1979-04-17 1979-04-17 Photo-coupling semiconductor switch device

Country Status (1)

Country Link
JP (1) JPS55138927A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5930326A (en) * 1982-08-12 1984-02-17 Mitsubishi Electric Corp Signal transmission circuit
JPS6378615A (en) * 1986-09-22 1988-04-08 Mitsubishi Electric Corp Driving circuit for light emitting element
JPS6388915A (en) * 1986-10-02 1988-04-20 Mitsubishi Electric Corp Light emitting element driving circuit
JPH01137824A (en) * 1987-11-25 1989-05-30 Matsushita Electric Works Ltd Switching device
JPH052452U (en) * 1991-02-21 1993-01-14 三菱電機株式会社 Semiconductor circuit breaker
JP2007150003A (en) * 2005-11-29 2007-06-14 Fuji Electric Device Technology Co Ltd Insulated signal transmission circuit

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5930326A (en) * 1982-08-12 1984-02-17 Mitsubishi Electric Corp Signal transmission circuit
JPS6378615A (en) * 1986-09-22 1988-04-08 Mitsubishi Electric Corp Driving circuit for light emitting element
JPS6388915A (en) * 1986-10-02 1988-04-20 Mitsubishi Electric Corp Light emitting element driving circuit
JPH01137824A (en) * 1987-11-25 1989-05-30 Matsushita Electric Works Ltd Switching device
JPH052452U (en) * 1991-02-21 1993-01-14 三菱電機株式会社 Semiconductor circuit breaker
JP2007150003A (en) * 2005-11-29 2007-06-14 Fuji Electric Device Technology Co Ltd Insulated signal transmission circuit

Also Published As

Publication number Publication date
JPS6348208B2 (en) 1988-09-28

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