JPS54160198A - Stand-by system for alarm circuit - Google Patents
Stand-by system for alarm circuitInfo
- 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
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
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4886777U (en) * | 1972-01-24 | 1973-10-20 | ||
JPS50116381U (en) * | 1974-03-04 | 1975-09-22 |
-
1978
- 1978-06-09 JP JP6966278A patent/JPS54160198A/en active Granted
Patent Citations (2)
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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