JPS534498A - Instantaneous continuity testing circuit of fire sensor circuits in fire alarming systems - Google Patents

Instantaneous continuity testing circuit of fire sensor circuits in fire alarming systems

Info

Publication number
JPS534498A
JPS534498A JP15944175A JP15944175A JPS534498A JP S534498 A JPS534498 A JP S534498A JP 15944175 A JP15944175 A JP 15944175A JP 15944175 A JP15944175 A JP 15944175A JP S534498 A JPS534498 A JP S534498A
Authority
JP
Japan
Prior art keywords
fire
instantaneous
sensor circuits
testing circuit
continuity testing
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
JP15944175A
Other languages
Japanese (ja)
Other versions
JPS5845759B2 (en
Inventor
Kazumasa Murakami
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Electric Works Co Ltd
Original Assignee
Matsushita Electric Works Ltd
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 Matsushita Electric Works Ltd filed Critical Matsushita Electric Works Ltd
Priority to JP15944175A priority Critical patent/JPS5845759B2/en
Publication of JPS534498A publication Critical patent/JPS534498A/en
Publication of JPS5845759B2 publication Critical patent/JPS5845759B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Alarm Systems (AREA)
  • Fire Alarms (AREA)

Abstract

PURPOSE: To automatically perform the disconnection supervision of fire sensing circuits at all times by lowering the circuit voltage down to a specified value even in a short time of several 100μS, in the circuit of performing automatic checking of fire sensor circuits.
COPYRIGHT: (C)1978,JPO&Japio
JP15944175A 1975-12-30 1975-12-30 Kahoukeihousouchiniokeru Expired JPS5845759B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15944175A JPS5845759B2 (en) 1975-12-30 1975-12-30 Kahoukeihousouchiniokeru

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15944175A JPS5845759B2 (en) 1975-12-30 1975-12-30 Kahoukeihousouchiniokeru

Publications (2)

Publication Number Publication Date
JPS534498A true JPS534498A (en) 1978-01-17
JPS5845759B2 JPS5845759B2 (en) 1983-10-12

Family

ID=15693813

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15944175A Expired JPS5845759B2 (en) 1975-12-30 1975-12-30 Kahoukeihousouchiniokeru

Country Status (1)

Country Link
JP (1) JPS5845759B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6054096A (en) * 1983-09-02 1985-03-28 株式会社東芝 Alarm
JPS60117398A (en) * 1983-11-29 1985-06-24 松下電工株式会社 Disconnection detecting circuit for fire alarm receiver
JP2017130048A (en) * 2016-01-20 2017-07-27 パナソニックＩｐマネジメント株式会社 Fire receiver and disaster prevention system using the same

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6054096A (en) * 1983-09-02 1985-03-28 株式会社東芝 Alarm
JPS60117398A (en) * 1983-11-29 1985-06-24 松下電工株式会社 Disconnection detecting circuit for fire alarm receiver
JPH0215110B2 (en) * 1983-11-29 1990-04-11 Matsushita Electric Works Ltd
JP2017130048A (en) * 2016-01-20 2017-07-27 パナソニックＩｐマネジメント株式会社 Fire receiver and disaster prevention system using the same

Also Published As

Publication number Publication date
JPS5845759B2 (en) 1983-10-12

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