JPS6447123A - Solid-state relay - Google Patents

Solid-state relay

Info

Publication number
JPS6447123A
JPS6447123A JP62203410A JP20341087A JPS6447123A JP S6447123 A JPS6447123 A JP S6447123A JP 62203410 A JP62203410 A JP 62203410A JP 20341087 A JP20341087 A JP 20341087A JP S6447123 A JPS6447123 A JP S6447123A
Authority
JP
Japan
Prior art keywords
triac
photo
turned
main
vth
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
JP62203410A
Other languages
Japanese (ja)
Inventor
Yoshiaki Kato
Tatsuo Yamazaki
Seizo Sato
Masahiro Naito
Taiichiro Hida
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
Hitachi Power Semiconductor Device Ltd
Original Assignee
Hitachi Ltd
Hitachi Haramachi Electronics 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, Hitachi Haramachi Electronics Ltd filed Critical Hitachi Ltd
Priority to JP62203410A priority Critical patent/JPS6447123A/en
Publication of JPS6447123A publication Critical patent/JPS6447123A/en
Pending legal-status Critical Current

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Abstract

PURPOSE:To ensure turn-off of a photo triac in a photocoupler when a main triac is turned on by inserting an anti-parallel circuit of semiconductor elements in series between the triac and the photo triac. CONSTITUTION:With a signal VIN is inputted, a lightemitting diode 13 of a photocoupler 4 is lighted, a photo triac 14 is turned on and a current ig flows as a gate current of the main triac. Thus, the main triac 7 is triggered and turned on and power is supplied to a load 3 from an AC power supply 2. In this case, the threshold voltage (VTH) of the circuit at the side of the photo triac 14 is the sum of the VTH of the photo triac 14 and the VTH of the diodes 6 connected in anti-parallel and is increased more than the on-voltage of the main triac, no current ig flows. Thus, no commutation mode exists in the photo triac 14 at the voltage inversion of the power supply 2 and the photo triac 14 is surely turned off without mis-ignition.
JP62203410A 1987-08-18 1987-08-18 Solid-state relay Pending JPS6447123A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62203410A JPS6447123A (en) 1987-08-18 1987-08-18 Solid-state relay

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62203410A JPS6447123A (en) 1987-08-18 1987-08-18 Solid-state relay

Publications (1)

Publication Number Publication Date
JPS6447123A true JPS6447123A (en) 1989-02-21

Family

ID=16473606

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62203410A Pending JPS6447123A (en) 1987-08-18 1987-08-18 Solid-state relay

Country Status (1)

Country Link
JP (1) JPS6447123A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19710484C2 (en) * 1996-03-13 2001-07-19 Omron Tateisi Electronics Co Contactless relay

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19710484C2 (en) * 1996-03-13 2001-07-19 Omron Tateisi Electronics Co Contactless relay

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