JPS5844692U - Power supply line disconnection detection circuit for fire detectors, etc. - Google Patents
Power supply line disconnection detection circuit for fire detectors, etc.Info
- Publication number
- JPS5844692U JPS5844692U JP5716081U JP5716081U JPS5844692U JP S5844692 U JPS5844692 U JP S5844692U JP 5716081 U JP5716081 U JP 5716081U JP 5716081 U JP5716081 U JP 5716081U JP S5844692 U JPS5844692 U JP S5844692U
- Authority
- JP
- Japan
- Prior art keywords
- power supply
- supply line
- detection circuit
- disconnection detection
- fire detectors
- 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
Links
Landscapes
- Alarm Systems (AREA)
- Fire Alarms (AREA)
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
図は、本考案の一実施例を示す回路図である。
図において、Ｅｌ・・・第１電源、Ｅ２・・・第２電源
、Ｐｌ・・・電源供給線、Ｐ２・・・監視線、Ｄ□〜Ｄ
ｎ・・・感知器、Ｒ□・・・抵抗、ｚｌｌ ｚ２・・・
ツェナーダイオード、Ｑ□。
Ｑ２・・・トランジスタ。The figure is a circuit diagram showing an embodiment of the present invention. In the figure, El...first power supply, E2...second power supply, Pl...power supply line, P2...monitoring line, D□~D
n...sensor, R□...resistance, zll z2...
Zener diode, Q□. Q2...transistor.
Claims (1)
動作用第１電源を供給する電源供給線と、該電源供給線
の端末部を受信機側に折返し接続する監視線と、前記第
１電源の電圧より低い電圧の第２電源と、前記第１電源
電圧でオンし前記第２電源電圧でオフするスイッチ回路
とを備え、前記監視線の受信機側を該スイッチ回路の制
御入力端子に接続すると共にダイオードを介して前記第
２電源に接続したことを特徴とする火災感知器等の電源
供給線断線検出回路。A power supply line for supplying a first power source for operation of a plurality of fire detectors etc. arranged in a warning area from the receiver, a monitoring line for connecting a terminal part of the power supply line back to the receiver side, and a monitoring line for connecting the terminal part of the power supply line to the receiver side; a second power supply having a voltage lower than the voltage of the first power supply; and a switch circuit that is turned on at the first power supply voltage and turned off at the second power supply voltage, and the receiver side of the monitoring line is connected to a control input terminal of the switch circuit. 1. A power supply line disconnection detection circuit for a fire detector or the like, characterized in that the circuit is connected to the second power source via a diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5716081U JPS5844692U (en) | 1981-04-22 | 1981-04-22 | Power supply line disconnection detection circuit for fire detectors, etc. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5716081U JPS5844692U (en) | 1981-04-22 | 1981-04-22 | Power supply line disconnection detection circuit for fire detectors, etc. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5844692U true JPS5844692U (en) | 1983-03-25 |
Family
ID=29853640
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5716081U Pending JPS5844692U (en) | 1981-04-22 | 1981-04-22 | Power supply line disconnection detection circuit for fire detectors, etc. |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5844692U (en) |
-
1981
- 1981-04-22 JP JP5716081U patent/JPS5844692U/en active Pending
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