JPS54160198A - Stand-by system for alarm circuit - Google Patents

Stand-by system for alarm circuit

Info

Publication number
JPS54160198A
JPS54160198A JP6966278A JP6966278A JPS54160198A JP S54160198 A JPS54160198 A JP S54160198A JP 6966278 A JP6966278 A JP 6966278A JP 6966278 A JP6966278 A JP 6966278A JP S54160198 A JPS54160198 A JP S54160198A
Authority
JP
Japan
Prior art keywords
relay
alarm circuit
fuse
fusing
case
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
JP6966278A
Other languages
Japanese (ja)
Other versions
JPH0114637B2 (en
Inventor
Matsushiro Oba
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP6966278A priority Critical patent/JPS54160198A/en
Publication of JPS54160198A publication Critical patent/JPS54160198A/en
Publication of JPH0114637B2 publication Critical patent/JPH0114637B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Alarm Systems (AREA)

Abstract

PURPOSE: To realize switching between the using and spare alarm circuits in case the fusing occurs to the power supply fuse of the relay functioning as the using alarm circuit by connecting the power supply to the relay for the spare alarm circuit.
CONSTITUTION: In case fuse FO of the using alarm circuit is normal and when either one of contacts fe and f1Wfn which close by the fusing occurring at fuse FE of the spare alarm circuit and fuse F1WFn of circuit parts A1WAn plus contacts a1W an which close by the fault occurring at parts A1WAn is closed, relay RL3 is actuated to transmit outside alarm signal a m via contact r 3. While in case fuse FO has the fusing, contact fo closes and relay RL5 operates. As a result, contact r 5 closes to actuate relay RL4. Accordingly, the function of the alarm circuit can be maintained even in case fuse FO of the using alarm circuit may have the fusing since relay RL4 becomes active.
COPYRIGHT: (C)1979,JPO&Japio
JP6966278A 1978-06-09 1978-06-09 Stand-by system for alarm circuit Granted JPS54160198A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6966278A JPS54160198A (en) 1978-06-09 1978-06-09 Stand-by system for alarm circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6966278A JPS54160198A (en) 1978-06-09 1978-06-09 Stand-by system for alarm circuit

Publications (2)

Publication Number Publication Date
JPS54160198A true JPS54160198A (en) 1979-12-18
JPH0114637B2 JPH0114637B2 (en) 1989-03-13

Family

ID=13409256

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6966278A Granted JPS54160198A (en) 1978-06-09 1978-06-09 Stand-by system for alarm circuit

Country Status (1)

Country Link
JP (1) JPS54160198A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4886777U (en) * 1972-01-24 1973-10-20
JPS50116381U (en) * 1974-03-04 1975-09-22

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4886777U (en) * 1972-01-24 1973-10-20
JPS50116381U (en) * 1974-03-04 1975-09-22

Also Published As

Publication number Publication date
JPH0114637B2 (en) 1989-03-13

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