JPS5687910A - Tuning fork type quartz oscillator - Google Patents
Tuning fork type quartz oscillatorInfo
- Publication number
- JPS5687910A JPS5687910A JP16526779A JP16526779A JPS5687910A JP S5687910 A JPS5687910 A JP S5687910A JP 16526779 A JP16526779 A JP 16526779A JP 16526779 A JP16526779 A JP 16526779A JP S5687910 A JPS5687910 A JP S5687910A
- Authority
- JP
- Japan
- Prior art keywords
- tuning fork
- quartz
- axes
- axis
- mode
- 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
- 239000010453 quartz Substances 0.000 title abstract 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 title abstract 5
- 238000005452 bending Methods 0.000 abstract 3
- 230000008878 coupling Effects 0.000 abstract 2
- 238000010168 coupling process Methods 0.000 abstract 2
- 238000005859 coupling reaction Methods 0.000 abstract 2
- 230000010355 oscillation Effects 0.000 abstract 2
- 238000010276 construction Methods 0.000 abstract 1
- 230000003287 optical effect Effects 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
- H03H9/215—Crystal tuning forks consisting of quartz
Abstract
PURPOSE:To subminiaturize the size and to obtain an oscillator excellent in the frequency temperature characteristics at low frequency, by making possible the coupling between the bending mode oscillation and torsional mode oscillation, through the optimum selection of the size of tuning fork of a quartz oscillator. CONSTITUTION:Taking the length of tuning fork arm of a tuning fork type quartz 1 as L, arm width of tuning fork as W, thickness of tuning fork as T, electric axis, mechanical axis and optical axis of the quartz as X, Y, Z respectively and other new axes when the axes are turned by theta degrees around the X axis, as Y' and Z' axes. Further, the electrode on the surface of the quartz 1 is taken as the two-terminal construction of poles A and B. By applying AC voltage to the two-terminal electrodes A, B, the bending and torsion mode can continuously be excited. Taking the resonant frequency of torsion mode as f1 and that of bending mode as f2 with the thickness of T1, f2 is almost on the FM line not subjected to f1, and if T is further taken greater, f2 is not present on the FM line, showing the state of coupling. By selecting W<2>/L.T in the range of 1.32-3.20, both modes can be sufficiently coupled to increase the characteristics.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16526779A JPS5687910A (en) | 1979-12-19 | 1979-12-19 | Tuning fork type quartz oscillator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16526779A JPS5687910A (en) | 1979-12-19 | 1979-12-19 | Tuning fork type quartz oscillator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5687910A true JPS5687910A (en) | 1981-07-17 |
Family
ID=15809073
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16526779A Pending JPS5687910A (en) | 1979-12-19 | 1979-12-19 | Tuning fork type quartz oscillator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5687910A (en) |
-
1979
- 1979-12-19 JP JP16526779A patent/JPS5687910A/en active Pending
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