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JPS6444621A - Solid-state relay - Google Patents

Solid-state relay

Info

Publication number
JPS6444621A
JPS6444621A JP62200789A JP20078987A JPS6444621A JP S6444621 A JPS6444621 A JP S6444621A JP 62200789 A JP62200789 A JP 62200789A JP 20078987 A JP20078987 A JP 20078987A JP S6444621 A JPS6444621 A JP S6444621A
Authority
JP
Japan
Prior art keywords
diode
cathode
resistance
power source
flows
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
JP62200789A
Other languages
Japanese (ja)
Inventor
Seiji 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.)
Nihon Inter Electronics Corp
Original Assignee
Nihon Inter Electronics 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 Nihon Inter Electronics Corp filed Critical Nihon Inter Electronics Corp
Priority to JP62200789A priority Critical patent/JPS6444621A/en
Publication of JPS6444621A publication Critical patent/JPS6444621A/en
Pending legal-status Critical Current

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Abstract

PURPOSE:To prevent destruction due to a lack of dielectric strength of a photo transistor TR, by preventing the voltage of an AC power source from being applied to the photo TR in a photocoupler as it is when an input signal is not supplied to a solid relay and the solid relay is turned off. CONSTITUTION:A diode D1 is interposed between the collector and the emitter of a photo TR P.T in a photocoupler P.C, and a gate control TR Q is inserted between the gate and the cathode of a main switching element thyristor T, and the base of the TR Q is connected to the cathode of the diode D1. When the input signal is not supplied between signal input terminals 1a and 1b, the current controlled by a resistance r3 flows from an AC power source A.C to turn on the TR Q because the TR P.T is turned off, and a current Io flows. Then, a voltage is not applied between the gate and the cathode of the thyristor T and the turning-off state is kept. At the time of the next half cycle of AC, a current flows through the diode D1, the resistance r3, a diode D2, and a resistance r2. Thus, the voltage itself of the AC power source A.C is not applied to the TR P.T.
JP62200789A 1987-08-13 1987-08-13 Solid-state relay Pending JPS6444621A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62200789A JPS6444621A (en) 1987-08-13 1987-08-13 Solid-state relay

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62200789A JPS6444621A (en) 1987-08-13 1987-08-13 Solid-state relay

Publications (1)

Publication Number Publication Date
JPS6444621A true JPS6444621A (en) 1989-02-17

Family

ID=16430219

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62200789A Pending JPS6444621A (en) 1987-08-13 1987-08-13 Solid-state relay

Country Status (1)

Country Link
JP (1) JPS6444621A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07201660A (en) * 1993-12-28 1995-08-04 Nec Corp Solid electrolytic chip capacitor

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5698029A (en) * 1979-12-30 1981-08-07 Matsushita Electric Works Ltd Contactless relay

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5698029A (en) * 1979-12-30 1981-08-07 Matsushita Electric Works Ltd Contactless relay

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07201660A (en) * 1993-12-28 1995-08-04 Nec Corp Solid electrolytic chip capacitor

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