JPS60155213U - Input stage transistor protection circuit for electronic circuits - Google Patents

Input stage transistor protection circuit for electronic circuits

Info

Publication number
JPS60155213U
JPS60155213U JP4251284U JP4251284U JPS60155213U JP S60155213 U JPS60155213 U JP S60155213U JP 4251284 U JP4251284 U JP 4251284U JP 4251284 U JP4251284 U JP 4251284U JP S60155213 U JPS60155213 U JP S60155213U
Authority
JP
Japan
Prior art keywords
input stage
stage transistor
protection circuit
electronic circuits
transistor protection
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
JP4251284U
Other languages
Japanese (ja)
Inventor
田近　徹
Original Assignee
株式会社クボタ
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 株式会社クボタ filed Critical 株式会社クボタ
Priority to JP4251284U priority Critical patent/JPS60155213U/en
Publication of JPS60155213U publication Critical patent/JPS60155213U/en
Pending legal-status Critical Current

Links

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図は従来例の回路図、第２図はその入力段トランジ
スタの電源オフ時のベース時のベース電圧およびコレク
タ電圧の特性線図、第３図は本考案の一実施例の回路図
、第４図はその入力段トラ、ンジスタの電源オフ時のベ
ース電圧およびコレクタ電圧の特性線図である。FIG. 1 is a circuit diagram of a conventional example, FIG. 2 is a characteristic diagram of base voltage and collector voltage at the base of the input stage transistor when the power is turned off, and FIG. 3 is a circuit diagram of an embodiment of the present invention. FIG. 4 is a characteristic diagram of the base voltage and collector voltage of the input stage transistor and the transistor when the power is turned off.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 時定数回路３が外付けされる電子回路１の入力端子２に
入力段トランジスタ４のベースを接続し、該トランジス
タ４のコレクタが接続される高電位電源ライン５と上記
入力端子２とを該入力端子２から高電位電源ライン５へ
の電流を導通する一方向性半導体素子６を介して接続し
たことを特徴とする、電子回路の入力段トランジスタ保
護回路。The base of the input stage transistor 4 is connected to the input terminal 2 of the electronic circuit 1 to which the time constant circuit 3 is externally connected, and the input terminal 2 is connected to the high potential power supply line 5 to which the collector of the transistor 4 is connected. 1. An input stage transistor protection circuit for an electronic circuit, characterized in that the circuit is connected via a unidirectional semiconductor element 6 that conducts current from a terminal 2 to a high potential power supply line 5.
JP4251284U 1984-03-23 1984-03-23 Input stage transistor protection circuit for electronic circuits Pending JPS60155213U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4251284U JPS60155213U (en) 1984-03-23 1984-03-23 Input stage transistor protection circuit for electronic circuits

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4251284U JPS60155213U (en) 1984-03-23 1984-03-23 Input stage transistor protection circuit for electronic circuits

Publications (1)

Publication Number Publication Date
JPS60155213U true JPS60155213U (en) 1985-10-16

Family

ID=30553333

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4251284U Pending JPS60155213U (en) 1984-03-23 1984-03-23 Input stage transistor protection circuit for electronic circuits

Country Status (1)

Country Link
JP (1) JPS60155213U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006040935A1 (en) * 2004-10-15 2006-04-20 Rohm Co., Ltd Operational amplifier

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006040935A1 (en) * 2004-10-15 2006-04-20 Rohm Co., Ltd Operational amplifier

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