JPH0358795U - - Google Patents

Info

Publication number
JPH0358795U
JPH0358795U JP11799489U JP11799489U JPH0358795U JP H0358795 U JPH0358795 U JP H0358795U JP 11799489 U JP11799489 U JP 11799489U JP 11799489 U JP11799489 U JP 11799489U JP H0358795 U JPH0358795 U JP H0358795U
Authority
JP
Japan
Prior art keywords
projector
smoke detector
light receiver
voltage
photoelectric smoke
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
JP11799489U
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 JP11799489U priority Critical patent/JPH0358795U/ja
Publication of JPH0358795U publication Critical patent/JPH0358795U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Fire-Detection Mechanisms (AREA)

Description

【図面の簡単な説明】
第1図は本考案の実施例を示す光電式煙検知器
の全体構成図、第2図は従来の光電式煙検知器の
構成図、第3図は従来の光電式煙検知器の断面図
、第4図は従来の光電式煙検知器の送信出力及び
受信アンプ出力を示す図、第5図は従来の他の光
電式煙検知器の構成図である。 20……投光回路、21……パルス発生器、2
2,33……NPNトランジスタ、23,32,
41……電源端子、24,25,29,31,3
6,43,45,47,48,50,52,53
……抵抗、26……投光器(LED)、27,3
0,34,44,49……コンデンサ、28……
インバータ、35……可変抵抗器、40……受光
回路、42……受光トランジスタ、46,51…
…オペアンプ、54……整流回路、55……幅検
波回路、56……出力回路。

Claims (1)

  1. 【実用新案登録請求の範囲】 (1) (a) パルス発生器の出力に応じて駆動され
    る投光器と、 (b) 該投光器を流れる電流に比例した電圧を
    得る手段と、 (c) 前記投光器からの光を受ける受光器と、 (d) 該受光器の出力段に前記電圧を印加して
    受信バイアスを得る手段とを具備することを特徴
    とする光電式煙検知器。 (2) 前記受光器の出力段は、該受光器からの出
    力信号が印加されるとともに、前記電圧が印加さ
    れる増幅抵抗を有するオペアンプを含む請求項1
    記載の光電式煙検知器。
JP11799489U 1989-10-09 1989-10-09 Pending JPH0358795U (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11799489U JPH0358795U (ja) 1989-10-09 1989-10-09

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11799489U JPH0358795U (ja) 1989-10-09 1989-10-09

Publications (1)

Publication Number Publication Date
JPH0358795U true JPH0358795U (ja) 1991-06-07

Family

ID=31666188

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11799489U Pending JPH0358795U (ja) 1989-10-09 1989-10-09

Country Status (1)

Country Link
JP (1) JPH0358795U (ja)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007321325A (ja) * 2006-05-31 2007-12-13 Mieko Saito ポケット付き首巻き
JP2013529296A (ja) * 2010-04-21 2013-07-18 スプルー・セーフティー・プロダクツ・リミテッド 光学式煙検知器

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51136471A (en) * 1975-05-21 1976-11-25 Nittan Co Ltd Photocell smoke sensor

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51136471A (en) * 1975-05-21 1976-11-25 Nittan Co Ltd Photocell smoke sensor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007321325A (ja) * 2006-05-31 2007-12-13 Mieko Saito ポケット付き首巻き
JP2013529296A (ja) * 2010-04-21 2013-07-18 スプルー・セーフティー・プロダクツ・リミテッド 光学式煙検知器

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