JPS59118095U - gas alarm - Google Patents

gas alarm

Info

Publication number
JPS59118095U
JPS59118095U JP900983U JP900983U JPS59118095U JP S59118095 U JPS59118095 U JP S59118095U JP 900983 U JP900983 U JP 900983U JP 900983 U JP900983 U JP 900983U JP S59118095 U JPS59118095 U JP S59118095U
Authority
JP
Japan
Prior art keywords
gas alarm
comparison signal
signal
alarm
detection signal
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.)
Granted
Application number
JP900983U
Other languages
Japanese (ja)
Other versions
JPH021667Y2 (en
Inventor
敏 永田
Original Assignee
矢崎総業株式会社
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 矢崎総業株式会社 filed Critical 矢崎総業株式会社
Priority to JP900983U priority Critical patent/JPS59118095U/en
Publication of JPS59118095U publication Critical patent/JPS59118095U/en
Application granted granted Critical
Publication of JPH021667Y2 publication Critical patent/JPH021667Y2/ja
Granted legal-status Critical Current

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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 drawings]

第１図は従来のガス警報器を例示する回路図、第２図は
本考案によるガス警報器を示す回路図、第３図はツェナ
ー電圧と比較電圧変動率との関係を示す図、第４図はガ
ス濃度とセンサ出力との関係を示す図である。 １・・・半導体ガスセンサ、３・・・変圧器、９・・・
比較器、１１・・・ブザー、１３・・・ツェナーダイオ
ード。FIG. 1 is a circuit diagram illustrating a conventional gas alarm, FIG. 2 is a circuit diagram illustrating a gas alarm according to the present invention, FIG. 3 is a diagram showing the relationship between Zener voltage and comparative voltage fluctuation rate, and FIG. The figure is a diagram showing the relationship between gas concentration and sensor output. 1... Semiconductor gas sensor, 3... Transformer, 9...
Comparator, 11... Buzzer, 13... Zener diode.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 一方の入力に半導体ガスセンサからの検出信号を受は他
方の入力には警報すべき濃度に相当する比較信号を受け
て、検出信号が比較信号を越えたとき警報信号を発生す
る比較器を備えたガス警報器において、前記比較信号を
発生する装置は前記検出信号の基準電位側に接続された
抵抗と、非安定電源に接続されたツェナーダイオードと
より構成され、前記比較信号はこれら抵抗とツェナーダ
イオードとの接続点より得るようにしたことを特徴とす
るガス警報器。One input receives a detection signal from the semiconductor gas sensor, the other input receives a comparison signal corresponding to the concentration to be alarmed, and is equipped with a comparator that generates an alarm signal when the detection signal exceeds the comparison signal. In the gas alarm, the device that generates the comparison signal is composed of a resistor connected to the reference potential side of the detection signal and a Zener diode connected to an unstable power supply, and the comparison signal is generated by connecting the resistor and the Zener diode. A gas alarm characterized in that the gas alarm is obtained from a connection point with a gas alarm.
JP900983U 1983-01-27 1983-01-27 gas alarm Granted JPS59118095U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP900983U JPS59118095U (en) 1983-01-27 1983-01-27 gas alarm

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP900983U JPS59118095U (en) 1983-01-27 1983-01-27 gas alarm

Publications (2)

Publication Number Publication Date
JPS59118095U true JPS59118095U (en) 1984-08-09
JPH021667Y2 JPH021667Y2 (en) 1990-01-16

Family

ID=30140482

Family Applications (1)

Application Number Title Priority Date Filing Date
JP900983U Granted JPS59118095U (en) 1983-01-27 1983-01-27 gas alarm

Country Status (1)

Country Link
JP (1) JPS59118095U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62105598U (en) * 1985-12-19 1987-07-06

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62105598U (en) * 1985-12-19 1987-07-06

Also Published As

Publication number Publication date
JPH021667Y2 (en) 1990-01-16

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