JPS57148426A - Solid-state relay circuit - Google Patents

Solid-state relay circuit

Info

Publication number
JPS57148426A
JPS57148426A JP3314281A JP3314281A JPS57148426A JP S57148426 A JPS57148426 A JP S57148426A JP 3314281 A JP3314281 A JP 3314281A JP 3314281 A JP3314281 A JP 3314281A JP S57148426 A JPS57148426 A JP S57148426A
Authority
JP
Japan
Prior art keywords
circuit
tra1
terminals
resistance
solid
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
JP3314281A
Other languages
Japanese (ja)
Inventor
Takehiko Kobayashi
Toshiyuki Miyata
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP3314281A priority Critical patent/JPS57148426A/en
Publication of JPS57148426A publication Critical patent/JPS57148426A/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
    • H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
    • H03K17/56—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices
    • H03K17/72—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices having more than two PN junctions; having more than three electrodes; having more than one electrode connected to the same conductivity region
    • H03K17/725—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices having more than two PN junctions; having more than three electrodes; having more than one electrode connected to the same conductivity region for ac voltages or currents

Landscapes

  • Power Conversion In General (AREA)
  • Thyristor Switches And Gates (AREA)

Abstract

PURPOSE:To improve breakdown strength against the surge of a solid-state relay circuit by setting the breakdown voltage of a circuit for gate control over a triac lower than that of the triac. CONSTITUTION:A solid-state relay SSR circuit is applied with an input signal through terminals A and B, and an AC power source is connected between terminals C and D. Between the terminals C and D, a triac TRA1 is connected in parallel to a snubber circuit composed of a capacitor C1 and a resistance R1, and a rectifying bridge composed of a current control resistance R2 and diodes D1-D4, and a gate control circuit 2 composed of an SCR coupler 2', etc, are connected to the TRA1, whose gate is connected to the terminal D through a resistance R3 and is inputted to the rectifying bridge. When a surge voltage is applied between the terminals C and D, the SCR coupler 2' is broken down before the TRA1, so a discharging current from the C1 flows to the circuit 2 through the resistance R2 to lower the peak value of the discharging current, preventing the TRA1 and SCR3' from being broken down.
JP3314281A 1981-03-10 1981-03-10 Solid-state relay circuit Pending JPS57148426A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3314281A JPS57148426A (en) 1981-03-10 1981-03-10 Solid-state relay circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3314281A JPS57148426A (en) 1981-03-10 1981-03-10 Solid-state relay circuit

Publications (1)

Publication Number Publication Date
JPS57148426A true JPS57148426A (en) 1982-09-13

Family

ID=12378333

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3314281A Pending JPS57148426A (en) 1981-03-10 1981-03-10 Solid-state relay circuit

Country Status (1)

Country Link
JP (1) JPS57148426A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5338991A (en) * 1992-12-28 1994-08-16 Lu Chao Cheng High power solid state relay with input presence and polarity indication

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5338991A (en) * 1992-12-28 1994-08-16 Lu Chao Cheng High power solid state relay with input presence and polarity indication

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