JPS59134891U - gas leak alarm - Google Patents
gas leak alarmInfo
- Publication number
- JPS59134891U JPS59134891U JP2707383U JP2707383U JPS59134891U JP S59134891 U JPS59134891 U JP S59134891U JP 2707383 U JP2707383 U JP 2707383U JP 2707383 U JP2707383 U JP 2707383U JP S59134891 U JPS59134891 U JP S59134891U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- constant voltage
- switching regulator
- gas leak
- leak alarm
- 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
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
第１図は従来のガスもれ警報器を例示した図１、 第２
図は本考案によるガスもれ警報器を例示した図、第３図
は定電圧スイッチングレギュレータの入力特性を示す図
である。Figure 1 shows an example of a conventional gas leak alarm;
This figure is a diagram illustrating a gas leak alarm according to the present invention, and FIG. 3 is a diagram showing input characteristics of a constant voltage switching regulator.
Claims (1)
器を含む検出およびスイッチング回路と、この回路の出
力を外部の集中監視盤へ伝達させる外部出力回路とを備
えたガスもれ警報器において、前記定電圧スイッチング
レギュレータの直流電圧入力側に過電流検出回路を備え
、電源電圧降下による定電圧スイッチングレギュレータ
への入力電流増加および前記外部出力回路の信号線短絡
による定電圧スイッチングレギュレータへの入力電流増
加を検出して前記外部出力回路の出力信号を故障信号を
表わすゼロボルトの信号に切換えるようにしたことを特
徴とするガスもれ警報器。A gas leak alarm comprising a constant voltage switching regulator, a detection and switching circuit including a sensor and a comparator, and an external output circuit that transmits the output of this circuit to an external central monitoring board, wherein the constant voltage switching regulator An overcurrent detection circuit is provided on the DC voltage input side of the circuit, and detects an increase in the input current to the constant voltage switching regulator due to a drop in the power supply voltage and an increase in the input current to the constant voltage switching regulator due to a short circuit of the signal line of the external output circuit. A gas leak alarm characterized in that the output signal of an external output circuit is switched to a zero volt signal representing a failure signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2707383U JPS59134891U (en) | 1983-02-28 | 1983-02-28 | gas leak alarm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2707383U JPS59134891U (en) | 1983-02-28 | 1983-02-28 | gas leak alarm |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59134891U true JPS59134891U (en) | 1984-09-08 |
| JPH0241746Y2 JPH0241746Y2 (en) | 1990-11-07 |
Family
ID=30157968
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2707383U Granted JPS59134891U (en) | 1983-02-28 | 1983-02-28 | gas leak alarm |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59134891U (en) |
-
1983
- 1983-02-28 JP JP2707383U patent/JPS59134891U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0241746Y2 (en) | 1990-11-07 |
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