GB289471A - Improvements relating to piezo-electric crystals - Google Patents
Improvements relating to piezo-electric crystalsInfo
- Publication number
- GB289471A GB289471A GB12138/28A GB1213828A GB289471A GB 289471 A GB289471 A GB 289471A GB 12138/28 A GB12138/28 A GB 12138/28A GB 1213828 A GB1213828 A GB 1213828A GB 289471 A GB289471 A GB 289471A
- Authority
- GB
- United Kingdom
- Prior art keywords
- piezo
- axis
- crystal
- frequency
- parallel
- 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.)
- Expired
Links
- 239000013078 crystal Substances 0.000 title abstract 5
- 230000003287 optical effect Effects 0.000 abstract 2
- 239000010453 quartz Substances 0.000 abstract 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 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
- H03H9/17—Constructional features of resonators consisting of piezoelectric or electrostrictive material having a single resonator
- H03H9/19—Constructional features of resonators consisting of piezoelectric or electrostrictive material having a single resonator consisting of quartz
Landscapes
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
Abstract
289,471. Metropolitan-Vickers Electrical Co., Ltd., (Assignees of Little, D. G.). April 28, 1927, [Convention date]. Piezo-electric crystals. - A quartz section for use in connection with constant-frequency oscillation-generators is cut from the mother crystal in such a way that the electrode surfaces 24 - - 27 and 28, 30, 31, 32 respectively are parallel both to the optical axis 2, 2 and to one of the principal piezoelectric axes 5, 5, instead of being parallel to the optical axis and the principal crystallographic axis 3, 3 as usual. The fundamental crystal frequency then depends upon the thickness 27, 32 coincident with the crystallographic axis 3, 3 and perpendicular to the piezo-electric axis 5, 5, so that a comparatively large electrode area is made available in a crystal section of high fundamental frequency.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US289471XA | 1927-04-28 | 1927-04-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB289471A true GB289471A (en) | 1929-06-20 |
Family
ID=21846393
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB12138/28A Expired GB289471A (en) | 1927-04-28 | 1928-04-25 | Improvements relating to piezo-electric crystals |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB289471A (en) |
-
1928
- 1928-04-25 GB GB12138/28A patent/GB289471A/en not_active Expired
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