JPS551557A - Electronic watch - Google Patents
Electronic watchInfo
- Publication number
- JPS551557A JPS551557A JP7464578A JP7464578A JPS551557A JP S551557 A JPS551557 A JP S551557A JP 7464578 A JP7464578 A JP 7464578A JP 7464578 A JP7464578 A JP 7464578A JP S551557 A JPS551557 A JP S551557A
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- capacitors
- capacitor
- capacity
- becomes
- 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
Abstract
PURPOSE:To perform temperature correction of high accuracy over a wide range by changing over two or more capacitors having non-linear temperature characteristics within a constant limited temperature range. CONSTITUTION:This watch has a piezoelectric vibrator as its time reference signal generating source and corrects the temperature change of its oscillation frequency through temperature change of a capacity, and this comprises providing two or more capacitors having non-linear temperature characteristics, e.g., capacitors 8, 9, as said capacity, detecting temperatures by dividing the temperature region with a signal generating mechanism 10 and selecting the ceramics capacitors 8, 9 by changing over an electronic switch 11. For example, at 16 deg.C or under, the electornic switch 11 so actuates that the ceramic capacitor 8 becomes an input capacity and the ceramics capacitor 9 becomes open. At above 16 deg.C, the capacitor 9 becomes an input capacity and the capacitor 8 becomes open. And the temperature characteristics of the frequency in the entire temperature region become flat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7464578A JPS551557A (en) | 1978-06-20 | 1978-06-20 | Electronic watch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7464578A JPS551557A (en) | 1978-06-20 | 1978-06-20 | Electronic watch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS551557A true JPS551557A (en) | 1980-01-08 |
Family
ID=13553155
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7464578A Pending JPS551557A (en) | 1978-06-20 | 1978-06-20 | Electronic watch |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS551557A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01202178A (en) * | 1988-02-08 | 1989-08-15 | Res Dev Corp Of Japan | Characteristic linearizing method for piezoelectric actuator |
-
1978
- 1978-06-20 JP JP7464578A patent/JPS551557A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01202178A (en) * | 1988-02-08 | 1989-08-15 | Res Dev Corp Of Japan | Characteristic linearizing method for piezoelectric actuator |
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