CH628203GA3 - - Google Patents
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- Publication number
- CH628203GA3 CH628203GA3 CH1287977A CH1287977A CH628203GA3 CH 628203G A3 CH628203G A3 CH 628203GA3 CH 1287977 A CH1287977 A CH 1287977A CH 1287977 A CH1287977 A CH 1287977A CH 628203G A3 CH628203G A3 CH 628203GA3
- Authority
- CH
- Switzerland
- Prior art keywords
- tines
- tuning fork
- voltage
- polarity
- electrodes
- Prior art date
Links
- 239000013078 crystal Substances 0.000 abstract 2
- 230000005684 electric field Effects 0.000 abstract 2
- 239000010453 quartz Substances 0.000 abstract 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract 2
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
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)
- Oscillators With Electromechanical Resonators (AREA)
Abstract
A quartz crystal tuning fork vibrator comprises a monolithic quartz crystal vibrator having a tuning fork shape with a plurality of vibratable tines. A set of electrodes are adhered to opposite surfaces of the tuning fork vibrator and are arranged in such a manner that when suitable alternating voltage is applied thereto, the tines undergo flexural vibration in their fundamental or resonance mode. The electrodes on each tine surface are preferably arranged in groups of four with the center two being applied with voltage of one polarity when the outer two are applied with voltage of the other polarity thereby establishing electric fields within the tines at the outside portions thereof while no electric field is established at the center portion of the tines. All of the flexural strain is thus confined to the outside portions of the tines thereby lowering the amplitude of vibration of the tine ends to the order of 5 mu -10 mu .
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP51126878A JPS5851687B2 (en) | 1976-10-22 | 1976-10-22 | Tuning fork crystal oscillator |
| JP3142277A JPS53116797A (en) | 1976-10-22 | 1977-03-22 | Tuning fork crystal vibrator |
| US84482777A | 1977-10-25 | 1977-10-25 | |
| US05/856,756 US4178527A (en) | 1976-10-22 | 1977-12-01 | Quartz crystal tuning fork vibrator with unexcited tine centers for reduced flexural amplitudes |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CH628203B CH628203B (en) | |
| CH628203GA3 true CH628203GA3 (en) | 1982-02-26 |
Family
ID=27459433
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH1287977A CH628203B (en) | 1976-10-22 | 1977-10-21 | QUARTZ CRYSTAL DIAPASON VIBRATOR. |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US4178527A (en) |
| JP (2) | JPS5851687B2 (en) |
| CH (1) | CH628203B (en) |
| DE (1) | DE2746154A1 (en) |
| FR (1) | FR2368801A1 (en) |
| GB (1) | GB1570834A (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS554176A (en) * | 1978-06-27 | 1980-01-12 | Seiko Instr & Electronics Ltd | Crystal vibrator |
| US4320320A (en) * | 1978-12-01 | 1982-03-16 | Kabushiki Kaisha Suwa Seikosha | Coupled mode tuning fork type quartz crystal vibrator |
| JPS5577222A (en) * | 1978-12-06 | 1980-06-10 | Seiko Epson Corp | Tuning-fork type vibrator |
| NL8000297A (en) * | 1980-01-17 | 1981-08-17 | Philips Nv | Piezoelectric vibrator. |
| US4531073A (en) * | 1983-05-31 | 1985-07-23 | Ohaus Scale Corporation | Piezoelectric crystal resonator with reduced impedance and sensitivity to change in humidity |
| JPH0222659U (en) * | 1988-07-28 | 1990-02-15 | ||
| JPH02140454A (en) * | 1988-11-22 | 1990-05-30 | Kubota Ltd | Internal combustion engine exhaust gas circulation system |
| JP4715652B2 (en) * | 2006-06-30 | 2011-07-06 | セイコーエプソン株式会社 | Piezoelectric vibrating piece |
| US8096264B2 (en) * | 2007-11-30 | 2012-01-17 | Illinois Tool Works Inc. | Repulsion ring |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE420034A (en) * | 1936-02-21 | |||
| JPS539917B2 (en) * | 1973-05-02 | 1978-04-10 | Suwa Seikosha Kk | |
| JPS49131088A (en) * | 1973-04-16 | 1974-12-16 | Suwa Seikosha Kk | |
| JPS5334875B2 (en) * | 1973-07-10 | 1978-09-22 | ||
| DE2504552A1 (en) * | 1974-07-01 | 1976-01-22 | Citizen Watch Co Ltd | MICRORESONATOR |
| JPS5323589A (en) * | 1976-08-18 | 1978-03-04 | Seiko Epson Corp | Crystal vibrator |
-
1976
- 1976-10-22 JP JP51126878A patent/JPS5851687B2/en not_active Expired
-
1977
- 1977-03-22 JP JP3142277A patent/JPS53116797A/en active Granted
- 1977-10-14 DE DE19772746154 patent/DE2746154A1/en not_active Withdrawn
- 1977-10-19 FR FR7731501A patent/FR2368801A1/en active Granted
- 1977-10-20 GB GB43718/77A patent/GB1570834A/en not_active Expired
- 1977-10-21 CH CH1287977A patent/CH628203B/en not_active IP Right Cessation
- 1977-12-01 US US05/856,756 patent/US4178527A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| FR2368801A1 (en) | 1978-05-19 |
| JPS5352088A (en) | 1978-05-12 |
| US4178527A (en) | 1979-12-11 |
| JPS5851687B2 (en) | 1983-11-17 |
| FR2368801B1 (en) | 1982-06-04 |
| JPS53116797A (en) | 1978-10-12 |
| GB1570834A (en) | 1980-07-09 |
| JPS6117171B2 (en) | 1986-05-06 |
| CH628203B (en) | |
| DE2746154A1 (en) | 1978-04-27 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PL | Patent ceased |