JPS5537913A - Exchange time informing device for battery - Google Patents
Exchange time informing device for batteryInfo
- Publication number
- JPS5537913A JPS5537913A JP11051878A JP11051878A JPS5537913A JP S5537913 A JPS5537913 A JP S5537913A JP 11051878 A JP11051878 A JP 11051878A JP 11051878 A JP11051878 A JP 11051878A JP S5537913 A JPS5537913 A JP S5537913A
- Authority
- JP
- Japan
- Prior art keywords
- battery
- comparator
- load
- exchange time
- time
- 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
- Tests Of Electric Status Of Batteries (AREA)
Abstract
PURPOSE: To inform the exchange time of the battery effectively and stably by providing a series circuit of load resistor and automatic iteration switch and a comparator between the positve and negative electrodes of the using battery.
CONSTITUTION: Between the negative and the positive electrodes of the using battery, the series circuit comprising a load resistor RL2 and a transistor Q3 operating as an automatic iteration switch 3 and a comparator 4 are connected. In case the internal resistance of the battery 1 is increased more than the value within the employable limit, in accordance with the difference voltage between the terminal voltage at the time of load of the battery and the terminal voltage at the time of non-load thereof generated from the comparator 4, the electronic buzzer 5 is driven to inform that the life of the battery 1 comes near to the employable limit by alarm.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11051878A JPS5537913A (en) | 1978-09-08 | 1978-09-08 | Exchange time informing device for battery |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11051878A JPS5537913A (en) | 1978-09-08 | 1978-09-08 | Exchange time informing device for battery |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5537913A true JPS5537913A (en) | 1980-03-17 |
Family
ID=14537818
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11051878A Pending JPS5537913A (en) | 1978-09-08 | 1978-09-08 | Exchange time informing device for battery |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5537913A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5281330A (en) * | 1990-04-20 | 1994-01-25 | Nippondenso Co., Ltd. | Water purifier |
-
1978
- 1978-09-08 JP JP11051878A patent/JPS5537913A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5281330A (en) * | 1990-04-20 | 1994-01-25 | Nippondenso Co., Ltd. | Water purifier |
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