JPS5524406A - Photosemiconductor switch circuit - Google Patents

Photosemiconductor switch circuit

Info

Publication number
JPS5524406A
JPS5524406A JP9614078A JP9614078A JPS5524406A JP S5524406 A JPS5524406 A JP S5524406A JP 9614078 A JP9614078 A JP 9614078A JP 9614078 A JP9614078 A JP 9614078A JP S5524406 A JPS5524406 A JP S5524406A
Authority
JP
Japan
Prior art keywords
ignition
luminous
scr1
cathode
gate
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
JP9614078A
Other languages
Japanese (ja)
Inventor
Akio Sagawa
Masayoshi Suzuki
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP9614078A priority Critical patent/JPS5524406A/en
Publication of JPS5524406A publication Critical patent/JPS5524406A/en
Pending legal-status Critical Current

Links

Landscapes

  • Photo Coupler, Interrupter, Optical-To-Optical Conversion Devices (AREA)

Abstract

PURPOSE: To hold ignition sensitivity and dv/dt capacity compatible each other where resistance between gate and cathode of photo SCR is not given high at giving light ignition signals.
CONSTITUTION: A luminous element 3 is ignited and SCR1 is radiated to ignition from applying a negative pulse signal to the input of logical element for ignition of photo SCR 1. In this case a luminous element 6 is not luminous due to a presence of inverter 7, and a phototransistor 5 is kept off. There works only a resistance RGK consequently between gate and cathode of SCR1, and hence it operates at high light ignition sensitivity from keeping the resistance RGK high. When input signal C does not work, the element 3 is not luminous but the element 6 gets luminous. The phototransistor 5 is therefore turned on, SCR1 is shortcircuited between cathode and gate, and thus dv/dt capacity is extremely improved. The dv/dt capacity can therefore be ketp high without deteriorating ignition sensitivity.
COPYRIGHT: (C)1980,JPO&Japio
JP9614078A 1978-08-09 1978-08-09 Photosemiconductor switch circuit Pending JPS5524406A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9614078A JPS5524406A (en) 1978-08-09 1978-08-09 Photosemiconductor switch circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9614078A JPS5524406A (en) 1978-08-09 1978-08-09 Photosemiconductor switch circuit

Publications (1)

Publication Number Publication Date
JPS5524406A true JPS5524406A (en) 1980-02-21

Family

ID=14157074

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9614078A Pending JPS5524406A (en) 1978-08-09 1978-08-09 Photosemiconductor switch circuit

Country Status (1)

Country Link
JP (1) JPS5524406A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4656539A (en) * 1984-01-25 1987-04-07 Sony Corporation Method and apparatus with improved tracking control for recording a digital signal
JPH01110780A (en) * 1988-09-08 1989-04-27 Semiconductor Res Found Photocoupler
JPH036849U (en) * 1990-06-22 1991-01-23
US5017991A (en) * 1984-03-22 1991-05-21 Jun-Ichi Nishizawa Light quenchable thyristor device
US5027020A (en) * 1989-10-10 1991-06-25 Teledyne Industries, Inc. Zero voltage switching AC relay circuit

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4656539A (en) * 1984-01-25 1987-04-07 Sony Corporation Method and apparatus with improved tracking control for recording a digital signal
US5017991A (en) * 1984-03-22 1991-05-21 Jun-Ichi Nishizawa Light quenchable thyristor device
JPH01110780A (en) * 1988-09-08 1989-04-27 Semiconductor Res Found Photocoupler
US5027020A (en) * 1989-10-10 1991-06-25 Teledyne Industries, Inc. Zero voltage switching AC relay circuit
JPH036849U (en) * 1990-06-22 1991-01-23
JPH0347336Y2 (en) * 1990-06-22 1991-10-08

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