JPS5463334A - Spare power source monitor - Google Patents
Spare power source monitorInfo
- Publication number
- JPS5463334A JPS5463334A JP13127477A JP13127477A JPS5463334A JP S5463334 A JPS5463334 A JP S5463334A JP 13127477 A JP13127477 A JP 13127477A JP 13127477 A JP13127477 A JP 13127477A JP S5463334 A JPS5463334 A JP S5463334A
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- circuit
- battery
- informing
- terminal voltage
- 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
- Protection Of Static Devices (AREA)
- Stand-By Power Supply Arrangements (AREA)
Abstract
PURPOSE: To permint a trouble of a battery to be imformed of when power is being supplied from an AC source to a load circuit with a simple circuit construction.
CONSTITUTION: Normally, the output voltage of a rectifying circuit 5 is supplied to a load with a manual switch 8 and contacts 9a and 9c of a manual select switch 9 respectively closed. In this state, in which charging current is flowing through a protective resistor 13, there is a voltage drop across the resistor 13, so that the terminal voltage across an informing circuit 16 is lower than the voltage between the opposite terminals 4a and 4b secondary winding 4 by the afore-mentioned voltage drop and is equal to the terminal voltage across a battery 11. When a fuse 12 is burnt away or when the battery 11 is deteriorated, the charging current to the battery 11 ceases, whereby the terminal voltage across the informing circuit 16 becomes equal to the voltage between the opposite terminals 4a and 4b of the secondary winding 4. As a result, the informing circuit 16 is operated to produce an alarm.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13127477A JPS5463334A (en) | 1977-10-31 | 1977-10-31 | Spare power source monitor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13127477A JPS5463334A (en) | 1977-10-31 | 1977-10-31 | Spare power source monitor |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5463334A true JPS5463334A (en) | 1979-05-22 |
Family
ID=15054091
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13127477A Pending JPS5463334A (en) | 1977-10-31 | 1977-10-31 | Spare power source monitor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5463334A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59161357U (en) * | 1983-04-13 | 1984-10-29 | ニツタン株式会社 | Fire alarm power circuit |
-
1977
- 1977-10-31 JP JP13127477A patent/JPS5463334A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59161357U (en) * | 1983-04-13 | 1984-10-29 | ニツタン株式会社 | Fire alarm power circuit |
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