JPS54102889A - Crystal oscillator of diapason type - Google Patents
Crystal oscillator of diapason typeInfo
- Publication number
- JPS54102889A JPS54102889A JP757778A JP757778A JPS54102889A JP S54102889 A JPS54102889 A JP S54102889A JP 757778 A JP757778 A JP 757778A JP 757778 A JP757778 A JP 757778A JP S54102889 A JPS54102889 A JP S54102889A
- Authority
- JP
- Japan
- Prior art keywords
- diapason
- oscillation
- taking
- resonant frequency
- axis
- 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
- 239000013078 crystal Substances 0.000 title abstract 3
- 230000010355 oscillation Effects 0.000 abstract 5
- 238000005452 bending Methods 0.000 abstract 3
- 230000008878 coupling Effects 0.000 abstract 1
- 238000010168 coupling process Methods 0.000 abstract 1
- 238000005859 coupling reaction Methods 0.000 abstract 1
- 230000005684 electric field Effects 0.000 abstract 1
- 239000004575 stone Substances 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
- H03H9/15—Constructional features of resonators consisting of piezoelectric or electrostrictive material
- H03H9/21—Crystal tuning forks
Landscapes
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
Abstract
PURPOSE:To improve the temperature performance of resonant frequency, by coupling the fundamental diapason oscillation of the diapason type crystal oscillator having comparatively lower resonant frequency with the fundamental bending oscillation orthogonal to it. CONSTITUTION:The oscillator is made of the crystal plate rotating the Z axis around X axis counterclockwise by phi and taking an angle of theta from the Z axis counterclockwise, taking Y' axis as the center. The electrodes 62 to 65 opposing up and down are placed on the arm of diapason of the oscillator (lateral cross section) and the bending oscillation in X'Y' and Y'Z' plane is oscillated with the electric fields 66 to 69 caused by it. Taking the resonant frequency of the diapason oscillation a bending oscillation is taken respectively as f1 and f2, the width of the arm of diapason as W and the thickness as t, the primary coefficient alpha of the temperature characteristics of f1-f2 and f1 is changed with the variation of W/t, and alpha=0 at a certain W/t. Further, when the cut angles phi and theta from raw stone are changed, the angle minimizing the secondary coefficient beta relating to the temperature is present. The temperature characteristics of f1 can remarkably be improved with these results.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP757778A JPS54102889A (en) | 1978-01-26 | 1978-01-26 | Crystal oscillator of diapason type |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP757778A JPS54102889A (en) | 1978-01-26 | 1978-01-26 | Crystal oscillator of diapason type |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS54102889A true JPS54102889A (en) | 1979-08-13 |
Family
ID=11669657
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP757778A Pending JPS54102889A (en) | 1978-01-26 | 1978-01-26 | Crystal oscillator of diapason type |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS54102889A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5942839A (en) * | 1995-08-31 | 1999-08-24 | Alps Electric Co., Ltd. | Piezoelectric vibrator and vibratory gyroscope using the same |
| JP2010233204A (en) * | 2009-03-02 | 2010-10-14 | Seiko Epson Corp | Resonator element and oscillator |
-
1978
- 1978-01-26 JP JP757778A patent/JPS54102889A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5942839A (en) * | 1995-08-31 | 1999-08-24 | Alps Electric Co., Ltd. | Piezoelectric vibrator and vibratory gyroscope using the same |
| JP2010233204A (en) * | 2009-03-02 | 2010-10-14 | Seiko Epson Corp | Resonator element and oscillator |
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