CH646033GA3 - Quartz-crystal vibrator working in bending, especially for timepiece - Google Patents
Quartz-crystal vibrator working in bending, especially for timepiece Download PDFInfo
- Publication number
- CH646033GA3 CH646033GA3 CH134180A CH134180A CH646033GA3 CH 646033G A3 CH646033G A3 CH 646033GA3 CH 134180 A CH134180 A CH 134180A CH 134180 A CH134180 A CH 134180A CH 646033G A3 CH646033G A3 CH 646033GA3
- Authority
- CH
- Switzerland
- Prior art keywords
- arm
- vibrator
- electrodes
- tuning
- angle
- Prior art date
Links
- 238000005452 bending Methods 0.000 title abstract 2
- 239000013078 crystal Substances 0.000 title abstract 2
- 230000005284 excitation Effects 0.000 abstract 2
- 230000003534 oscillatory 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 elements; 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
-
- G—PHYSICS
- G04—HOROLOGY
- G04F—TIME-INTERVAL MEASURING
- G04F5/00—Apparatus for producing preselected time intervals for use as timing standards
- G04F5/04—Apparatus for producing preselected time intervals for use as timing standards using oscillators with electromechanical resonators producing electric oscillations or timing pulses
- G04F5/06—Apparatus for producing preselected time intervals for use as timing standards using oscillators with electromechanical resonators producing electric oscillations or timing pulses using piezoelectric resonators
- G04F5/063—Constructional details
Landscapes
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Acoustics & Sound (AREA)
- General Physics & Mathematics (AREA)
- Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
Abstract
With a view to allowing oscillatory excitation in bending according to a particularly advantageous mode of application of the electric excitation field, the tuning-fork shaped quartz-crystal vibrator comprises, on at least one face of each of its arms, first and second electrodes (12, 13), the first, median ones passing centrally through the arm and the second, lateral ones passing along the edge of the arm. The first electrodes on one arm are connected to the second electrodes on the other arm, and vice versa. The vibrator tuning-fork is made of a thin plate (11) and its cut plane results from rotating the plane of an X cut vibrator by an angle ( alpha ) not greater than 10 DEG about the X axis, then by an angle ( gamma ) lying between 70 DEG and 90 DEG , about the Y axis. This vibrator is particularly suitable as a time standard in a small-sized electronic wristwatch required to have a good temperature characteristic. <IMAGE>
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP48042927A JPS49131088A (en) | 1973-04-16 | 1973-04-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH646033GA3 true CH646033GA3 (en) | 1984-11-15 |
Family
ID=12649642
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH134180A CH646033GA3 (en) | 1973-04-16 | 1980-02-19 | Quartz-crystal vibrator working in bending, especially for timepiece |
Country Status (3)
| Country | Link |
|---|---|
| CH (1) | CH646033GA3 (en) |
| HK (1) | HK54278A (en) |
| MY (1) | MY7800396A (en) |
-
1978
- 1978-09-14 HK HK542/78A patent/HK54278A/en unknown
- 1978-12-30 MY MY396/78A patent/MY7800396A/en unknown
-
1980
- 1980-02-19 CH CH134180A patent/CH646033GA3/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| MY7800396A (en) | 1978-12-31 |
| HK54278A (en) | 1978-09-22 |
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