JPH0282132U - - Google Patents

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Publication number
JPH0282132U
JPH0282132U JP16196388U JP16196388U JPH0282132U JP H0282132 U JPH0282132 U JP H0282132U JP 16196388 U JP16196388 U JP 16196388U JP 16196388 U JP16196388 U JP 16196388U JP H0282132 U JPH0282132 U JP H0282132U
Authority
JP
Japan
Prior art keywords
light
voltage level
receiving
receiving voltage
receiving element
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
JP16196388U
Other languages
English (en)
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 filed Critical
Priority to JP16196388U priority Critical patent/JPH0282132U/ja
Publication of JPH0282132U publication Critical patent/JPH0282132U/ja
Pending legal-status Critical Current

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Description

【図面の簡単な説明】
図面はこの考案の一実施例を示し、第1図は無
接点スイツチの概念図、第2図は第1図要部の回
路図である。 1……発光素子、2……受光素子、7……モニ
タ受光素子、8……フイードバツク制御回路、9
……自己診断回路、10……比較器、13……オ
ペアンプ、14……トランジスタ。

Claims (1)

  1. 【実用新案登録請求の範囲】 光信号の授受によりON・OFFする無接点ス
    イツチであつて、 受光素子とは別に発光素子の発光量を検出する
    モニタ用受光素子を設けて、モニタ用受光素子の
    受光電圧レベルを、適正な受光電圧レベルと比較
    して発光素子の発光量をフイードバツク制御する
    回路と、 上記モニタ用受光素子の受光電圧レベルを上記
    適正受光電圧レベルよりも低く設定された使用下
    限値の受光電圧レベルと比較して、使用下限値の
    受光電圧レベルよりもモニタ用受光素子の受光電
    圧レベルが低下した際に自己診断信号を出力する
    と共に、自己診断表示灯を点灯させる回路とを備
    えた無接点スイツチ。
JP16196388U 1988-12-14 1988-12-14 Pending JPH0282132U (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16196388U JPH0282132U (ja) 1988-12-14 1988-12-14

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16196388U JPH0282132U (ja) 1988-12-14 1988-12-14

Publications (1)

Publication Number Publication Date
JPH0282132U true JPH0282132U (ja) 1990-06-25

Family

ID=31445362

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16196388U Pending JPH0282132U (ja) 1988-12-14 1988-12-14

Country Status (1)

Country Link
JP (1) JPH0282132U (ja)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52122876A (en) * 1976-04-09 1977-10-15 Tokyo Shibaura Electric Co Photoelectric relay with fault detection device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52122876A (en) * 1976-04-09 1977-10-15 Tokyo Shibaura Electric Co Photoelectric relay with fault detection device

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