JPS6079837U - Overvoltage protection circuit for semiconductor devices - Google Patents

Overvoltage protection circuit for semiconductor devices

Info

Publication number
JPS6079837U
JPS6079837U JP17222483U JP17222483U JPS6079837U JP S6079837 U JPS6079837 U JP S6079837U JP 17222483 U JP17222483 U JP 17222483U JP 17222483 U JP17222483 U JP 17222483U JP S6079837 U JPS6079837 U JP S6079837U
Authority
JP
Japan
Prior art keywords
protection circuit
overvoltage protection
semiconductor devices
overvoltage
semiconductor device
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
JP17222483U
Other languages
Japanese (ja)
Inventor
加藤　広賢
Original Assignee
富士電機株式会社
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 富士電機株式会社 filed Critical 富士電機株式会社
Priority to JP17222483U priority Critical patent/JPS6079837U/en
Publication of JPS6079837U publication Critical patent/JPS6079837U/en
Pending legal-status Critical Current

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  • Protection Of Static Devices (AREA)
  • Electronic Switches (AREA)

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は従来のサージアブソーバを用いた回路箔 構成図、第２図は本考案の実施例による過電圧保護回路
の回路構成図、第３図は各部のタイミングチャートを示
す。 １・・・Ｆｌｆｉｊｔ電源、２・・・パワートランジス
タ、３゜１０・・・抵抗、４・・・サージアブソーバ、
５，８・・・コンデンサ、６・・・パワートランジスタ
制御回路、７・・・過電圧検出回路、９・・・ダイオー
ド、１１・・・切換スイッチ、ＶＯ川用源電圧、Ｖｓ・
・・サージ電圧、ＶＣ・・・両端電圧、■１・・・電圧
、Ｖ２・・・破壊電圧、Ｉ１、Ｉ２・・・電流。 ＭFIG. 1 is a circuit diagram of a circuit foil using a conventional surge absorber, FIG. 2 is a circuit diagram of an overvoltage protection circuit according to an embodiment of the present invention, and FIG. 3 is a timing chart of each part. 1... Flfijt power supply, 2... power transistor, 3°10... resistor, 4... surge absorber,
5, 8... Capacitor, 6... Power transistor control circuit, 7... Overvoltage detection circuit, 9... Diode, 11... Changeover switch, VO river source voltage, Vs.
...Surge voltage, VC...Voltage at both ends, ■1...Voltage, V2...Breakdown voltage, I1, I2...Current. M

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 負荷のスイッチング手段に用いられる半導体素子に、抵
抗とダイオードの並列接続回路にコンデンサを直列に接
続してなる保護回路を並列に接続し、過電圧が印加され
たことを検出し前記半導体素子を開閉させる手段を直流
電源間と前記半導体素子に接続したことを特徴とする半
導体素子の過電圧保護回路。A protection circuit consisting of a parallel connection circuit of a resistor and a diode and a capacitor connected in series is connected in parallel to a semiconductor element used as a load switching means, and the semiconductor element is opened and closed when overvoltage is detected. 1. An overvoltage protection circuit for a semiconductor device, characterized in that means is connected between a DC power source and the semiconductor device.
JP17222483U 1983-11-07 1983-11-07 Overvoltage protection circuit for semiconductor devices Pending JPS6079837U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17222483U JPS6079837U (en) 1983-11-07 1983-11-07 Overvoltage protection circuit for semiconductor devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17222483U JPS6079837U (en) 1983-11-07 1983-11-07 Overvoltage protection circuit for semiconductor devices

Publications (1)

Publication Number Publication Date
JPS6079837U true JPS6079837U (en) 1985-06-03

Family

ID=30375465

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17222483U Pending JPS6079837U (en) 1983-11-07 1983-11-07 Overvoltage protection circuit for semiconductor devices

Country Status (1)

Country Link
JP (1) JPS6079837U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999041835A1 (en) * 1998-02-12 1999-08-19 Omron Corporation Solid-state relay

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999041835A1 (en) * 1998-02-12 1999-08-19 Omron Corporation Solid-state relay

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