GB1284343A - Improvements in piezoelectric vibrators - Google Patents
Improvements in piezoelectric vibratorsInfo
- Publication number
- GB1284343A GB1284343A GB42304/70A GB4230470A GB1284343A GB 1284343 A GB1284343 A GB 1284343A GB 42304/70 A GB42304/70 A GB 42304/70A GB 4230470 A GB4230470 A GB 4230470A GB 1284343 A GB1284343 A GB 1284343A
- Authority
- GB
- United Kingdom
- Prior art keywords
- temperature coefficient
- crystal
- coefficient
- area
- piezo
- 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 abstract 5
- 230000008878 coupling Effects 0.000 abstract 3
- 238000010168 coupling process Methods 0.000 abstract 3
- 238000005859 coupling reaction Methods 0.000 abstract 3
- 238000013459 approach Methods 0.000 abstract 1
- 230000001939 inductive effect Effects 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N30/00—Piezoelectric or electrostrictive devices
- H10N30/80—Constructional details
- H10N30/85—Piezoelectric or electrostrictive active materials
Landscapes
- Crystals, And After-Treatments Of Crystals (AREA)
- Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
Abstract
1284343 Piezo-electric crystals NIPPON ELECTRIC CO Ltd 3 Sept 1970 [3 Sept 1969 13 Dec 1969] 42304/70 Heading HIE A piezo-electric vibration comprises an LiTaO 3 single crystal plate having an orientation (zxtwl)#/#/# in which the z axis is parallel to one of the three axes of symmetry of the crystal # in which 68<#<113; 22<#<57; and 0<#<50À4 or 130À5<#<180. The temperature coefficient for crystal orientations within these ranges can be <20 p.p.m./ C. and the electromagnetic coupling coefficient can exceed 10%. The temperature coefficient is within 20 p.p.m./ C. where # and # lie within the polygonal area ABCDEFG, and within the area HIJKLMNO the temperature coefficient is within 10 p.p.m./ C. Within the hatched area the temperature coefficient is less than 1 p.p.m./ C. The electromechanical coupling factor becomes larger as # approaches zero and in a preferred range 0<#<1À5. Tables are given of electromechanical coupling coefficient, temperature coefficient # specific inductive capacity for different orientation crystal plates.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7020169 | 1969-09-03 | ||
JP10030769A JPS504116B1 (en) | 1969-12-13 | 1969-12-13 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1284343A true GB1284343A (en) | 1972-08-09 |
Family
ID=26411362
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB42304/70A Expired GB1284343A (en) | 1969-09-03 | 1970-09-03 | Improvements in piezoelectric vibrators |
Country Status (2)
Country | Link |
---|---|
GB (1) | GB1284343A (en) |
NL (1) | NL172013C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100452470C (en) * | 2004-10-29 | 2009-01-14 | 杰富意矿物股份有限公司 | Piezoelectric single crystal device |
-
1970
- 1970-09-01 NL NLAANVRAGE7012955,A patent/NL172013C/en not_active IP Right Cessation
- 1970-09-03 GB GB42304/70A patent/GB1284343A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100452470C (en) * | 2004-10-29 | 2009-01-14 | 杰富意矿物股份有限公司 | Piezoelectric single crystal device |
Also Published As
Publication number | Publication date |
---|---|
DE2043762B2 (en) | 1976-09-30 |
NL172013C (en) | 1983-06-16 |
NL7012955A (en) | 1971-03-05 |
DE2043762A1 (en) | 1971-04-08 |
NL172013B (en) | 1983-01-17 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PE20 | Patent expired after termination of 20 years |