JPS5479548A - Oscillation circuit using piezoelectic vibrator - Google Patents
Oscillation circuit using piezoelectic vibratorInfo
- Publication number
- JPS5479548A JPS5479548A JP14748477A JP14748477A JPS5479548A JP S5479548 A JPS5479548 A JP S5479548A JP 14748477 A JP14748477 A JP 14748477A JP 14748477 A JP14748477 A JP 14748477A JP S5479548 A JPS5479548 A JP S5479548A
- Authority
- JP
- Japan
- Prior art keywords
- frequency
- curve
- beta1
- temperature coefficient
- beta2
- 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
- Electric Clocks (AREA)
- Oscillators With Electromechanical Resonators (AREA)
Abstract
PURPOSE:To make it possible to mass-produce hihg-precision wirstwatches by obtaining excellent frequency-temperatuer characteristics by electrically series-connecting two piezoelectric vibrarors under fixed conditions between the secondary temperature coefficient and equivalent capacity. CONSTITUTION:Frequency-temperature characteristics (curve 2) of tuning fork type bent crystal vibrator 5 is the secondary concave cirve and although secondary temperature coefficient (beta1) varies with a segmentation angle, (beta1) is equal to - 0.04 (ppm/ deg.C<2>). Frequency-temperature characteristics (curve 3) of lithium tantalate tuning fork type vibtator 6, on the other hand, draw the secondary concave curve and its secondary temperature coefficient (beta2) is nearly equal to + 0.08 (ppm/ deg.C<2>). Under the conditions of ¦beta2¦/¦beta1¦ C11/C12 denoting equivalent capacities of vibrators 5 and 6 by C11 and C12 respecitvely, two vibrators 5 and 6 are connected in series, so that the oscillation frequency of the oscillation circuit will vary according to extremely flat frequency-temperature characteristics like curve 4.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14748477A JPS5479548A (en) | 1977-12-08 | 1977-12-08 | Oscillation circuit using piezoelectic vibrator |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14748477A JPS5479548A (en) | 1977-12-08 | 1977-12-08 | Oscillation circuit using piezoelectic vibrator |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5479548A true JPS5479548A (en) | 1979-06-25 |
Family
ID=15431427
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14748477A Pending JPS5479548A (en) | 1977-12-08 | 1977-12-08 | Oscillation circuit using piezoelectic vibrator |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5479548A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5698907A (en) * | 1980-01-10 | 1981-08-08 | Seikosha Co Ltd | Oscillation circuit using piezoelectric oscillator |
JP2012124677A (en) * | 2010-12-07 | 2012-06-28 | Seiko Epson Corp | Vibrating device, oscillator and electronic apparatus |
-
1977
- 1977-12-08 JP JP14748477A patent/JPS5479548A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5698907A (en) * | 1980-01-10 | 1981-08-08 | Seikosha Co Ltd | Oscillation circuit using piezoelectric oscillator |
JP2012124677A (en) * | 2010-12-07 | 2012-06-28 | Seiko Epson Corp | Vibrating device, oscillator and electronic apparatus |
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