JPS5213799A - Disconnection detection method - Google Patents

Disconnection detection method

Info

Publication number
JPS5213799A
JPS5213799A JP8995575A JP8995575A JPS5213799A JP S5213799 A JPS5213799 A JP S5213799A JP 8995575 A JP8995575 A JP 8995575A JP 8995575 A JP8995575 A JP 8995575A JP S5213799 A JPS5213799 A JP S5213799A
Authority
JP
Japan
Prior art keywords
disconnection detection
detection method
circuit
changeover
keyboard
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
JP8995575A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5422760B2 (ref
Inventor
Akio Adachi
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.)
Hochiki Corp
Original Assignee
Hochiki Corp
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 Hochiki Corp filed Critical Hochiki Corp
Priority to JP8995575A priority Critical patent/JPS5213799A/ja
Publication of JPS5213799A publication Critical patent/JPS5213799A/ja
Publication of JPS5422760B2 publication Critical patent/JPS5422760B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Monitoring And Testing Of Transmission In General (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)
  • Alarm Systems (AREA)
JP8995575A 1975-07-23 1975-07-23 Disconnection detection method Granted JPS5213799A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8995575A JPS5213799A (en) 1975-07-23 1975-07-23 Disconnection detection method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8995575A JPS5213799A (en) 1975-07-23 1975-07-23 Disconnection detection method

Publications (2)

Publication Number Publication Date
JPS5213799A true JPS5213799A (en) 1977-02-02
JPS5422760B2 JPS5422760B2 (ref) 1979-08-08

Family

ID=13985106

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8995575A Granted JPS5213799A (en) 1975-07-23 1975-07-23 Disconnection detection method

Country Status (1)

Country Link
JP (1) JPS5213799A (ref)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5787094A (en) * 1980-09-17 1982-05-31 Aerospatiale Device for inspecting plural indicator lamps
JPS58167425A (ja) * 1982-03-24 1983-10-03 Showa Koki Kk アルミン酸アルカリの苛性アルカリ水溶液中の鉄などの酸化防止法
JPS59223223A (ja) * 1983-05-27 1984-12-15 Kao Corp アルミナゾルの製造法
JPS60694U (ja) * 1983-06-17 1985-01-07 ホーチキ株式会社 火災報知機の回線指定装置

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5787094A (en) * 1980-09-17 1982-05-31 Aerospatiale Device for inspecting plural indicator lamps
JPS58167425A (ja) * 1982-03-24 1983-10-03 Showa Koki Kk アルミン酸アルカリの苛性アルカリ水溶液中の鉄などの酸化防止法
JPS59223223A (ja) * 1983-05-27 1984-12-15 Kao Corp アルミナゾルの製造法
JPS60694U (ja) * 1983-06-17 1985-01-07 ホーチキ株式会社 火災報知機の回線指定装置

Also Published As

Publication number Publication date
JPS5422760B2 (ref) 1979-08-08

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