JPS5681475A - Electronic wrist watch - Google Patents
Electronic wrist watchInfo
- Publication number
- JPS5681475A JPS5681475A JP15840679A JP15840679A JPS5681475A JP S5681475 A JPS5681475 A JP S5681475A JP 15840679 A JP15840679 A JP 15840679A JP 15840679 A JP15840679 A JP 15840679A JP S5681475 A JPS5681475 A JP S5681475A
- Authority
- JP
- Japan
- Prior art keywords
- battery
- secondary battery
- circuit
- terminal voltage
- occurrence
- 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
Classifications
-
- G—PHYSICS
- G04—HOROLOGY
- G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
- G04C10/00—Arrangements of electric power supplies in time pieces
- G04C10/02—Arrangements of electric power supplies in time pieces the power supply being a radioactive or photovoltaic source
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electromechanical Clocks (AREA)
- Secondary Cells (AREA)
Abstract
PURPOSE:To prevent the occurrence of excessive charging of the secondary battery by discharging the secondary battery at the time when the terminal voltage of the prescribed secondary battery such as a silver battery exceeds a prescribed value. CONSTITUTION:The terminal voltage of the secondary battery 3 formed of the silver oxide, in which anode and cathode active materials charged by a solar battery 1 are silver oxide, zonc or the like, is detected by a battery voltage detecting circuit 4. And, when the terminal voltage exceeds 1,85V, the transistor, etc. of a discharging circuit 5 is made conductive by the output of detection of the circuit 4 and the battery 3 is discharged with larger current than the charging current, whereby the occurrence of the excessive charging of the battery 3 is prevented and a watch functioning electronic circuit 6, etc. is driven by the battery 3 in a stable fashion.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15840679A JPS5681475A (en) | 1979-12-06 | 1979-12-06 | Electronic wrist watch |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15840679A JPS5681475A (en) | 1979-12-06 | 1979-12-06 | Electronic wrist watch |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5681475A true JPS5681475A (en) | 1981-07-03 |
Family
ID=15671047
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15840679A Pending JPS5681475A (en) | 1979-12-06 | 1979-12-06 | Electronic wrist watch |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5681475A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011520409A (en) * | 2008-04-02 | 2011-07-14 | インフィニット パワー ソリューションズ, インコーポレイテッド | Control and protection of passive over and under voltage for energy storage devices associated with energy intake |
-
1979
- 1979-12-06 JP JP15840679A patent/JPS5681475A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011520409A (en) * | 2008-04-02 | 2011-07-14 | インフィニット パワー ソリューションズ, インコーポレイテッド | Control and protection of passive over and under voltage for energy storage devices associated with energy intake |
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