JPH0359733U - - Google Patents

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Publication number
JPH0359733U
JPH0359733U JP12030989U JP12030989U JPH0359733U JP H0359733 U JPH0359733 U JP H0359733U JP 12030989 U JP12030989 U JP 12030989U JP 12030989 U JP12030989 U JP 12030989U JP H0359733 U JPH0359733 U JP H0359733U
Authority
JP
Japan
Prior art keywords
led
circuit
malfunction detection
voltage
smoothing circuit
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
JP12030989U
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 JP12030989U priority Critical patent/JPH0359733U/ja
Publication of JPH0359733U publication Critical patent/JPH0359733U/ja
Pending legal-status Critical Current

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Description

【図面の簡単な説明】
第1図は、この考案の一実施例を示す光電スイ
ツチの投光回路のLED誤動作検出装置の回路図
、第2図、第3図は、同LED誤動作検出装置の
動作を説明するための各部波形図、第4図は、他
の実施例を示す誤動作検知回路の回路図、第5図
は、従来のLED誤動作検出装置を示す回路図で
ある。 21……LED、24……LED駆動回路、2
7……平滑回路、36……誤動作検知回路。

Claims (1)

    【実用新案登録請求の範囲】
  1. LEDと、パルス信号を受けて、前記LEDを
    駆動するLED駆動回路と、前記LEDに流れる
    電流に応じた電圧を平滑化する平滑回路と、この
    平滑回路よりの電圧と基準電圧とを比較し、前記
    LEDの平均電流が所定範囲を越えた場合に警告
    信号を出力する誤動作検知回路とからなることを
    特徴とするLED誤動作検出装置。
JP12030989U 1989-10-13 1989-10-13 Pending JPH0359733U (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12030989U JPH0359733U (ja) 1989-10-13 1989-10-13

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12030989U JPH0359733U (ja) 1989-10-13 1989-10-13

Publications (1)

Publication Number Publication Date
JPH0359733U true JPH0359733U (ja) 1991-06-12

Family

ID=31668392

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12030989U Pending JPH0359733U (ja) 1989-10-13 1989-10-13

Country Status (1)

Country Link
JP (1) JPH0359733U (ja)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59103969A (ja) * 1982-12-06 1984-06-15 Nissan Motor Co Ltd 内燃機関の点火装置
JPS6118640B2 (ja) * 1981-04-15 1986-05-13 Nippon Rotsukuraapaipu Kk

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6118640B2 (ja) * 1981-04-15 1986-05-13 Nippon Rotsukuraapaipu Kk
JPS59103969A (ja) * 1982-12-06 1984-06-15 Nissan Motor Co Ltd 内燃機関の点火装置

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