GB713618A - Piezoelectric elements for electromechanical transducers - Google Patents
Piezoelectric elements for electromechanical transducersInfo
- Publication number
- GB713618A GB713618A GB27669/52A GB2766952A GB713618A GB 713618 A GB713618 A GB 713618A GB 27669/52 A GB27669/52 A GB 27669/52A GB 2766952 A GB2766952 A GB 2766952A GB 713618 A GB713618 A GB 713618A
- Authority
- GB
- United Kingdom
- Prior art keywords
- unit
- electric
- piezo
- layers
- layer
- 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 3
- LFVGISIMTYGQHF-UHFFFAOYSA-N ammonium dihydrogen phosphate Chemical compound [NH4+].OP(O)([O-])=O LFVGISIMTYGQHF-UHFFFAOYSA-N 0.000 abstract 1
- 229910000387 ammonium dihydrogen phosphate Inorganic materials 0.000 abstract 1
- 239000002305 electric material Substances 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 235000019837 monoammonium phosphate Nutrition 0.000 abstract 1
- 230000007935 neutral effect Effects 0.000 abstract 1
- LJCNRYVRMXRIQR-OLXYHTOASA-L potassium sodium L-tartrate Chemical compound [Na+].[K+].[O-]C(=O)[C@H](O)[C@@H](O)C([O-])=O LJCNRYVRMXRIQR-OLXYHTOASA-L 0.000 abstract 1
- 235000011006 sodium potassium tartrate Nutrition 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R17/00—Piezoelectric transducers; Electrostrictive transducers
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
713,618. Piezo-electric crystals. STANDARD TELEPHONES & CABLES, Ltd. Nov. 3, 1952 [Nov. 3, 1951], No. 27669/52. Drawings to Specification. Class 40 (8) A piezo-electric unit is built up from a number of layers of piezo-electric material arranged about the neutral axis of the flexure of the unit, and the thickness of the layers or the electric intensity across them is so arranged that, when energizing voltage is applied to the unit, each layer is caused to bend by the same amount as a corresponding layer of the same dimensions, but forming part of a homogenous crystal element, would be bent if the homogenous layer was subjected to an equivalent mechanical stress. The layers may be formed of ammonium dihydrogen phosphate or Rochelle salt or one unit may be formed from several different piezoelectric materials. Units constructed as above can be arranged to have impedances which could not be obtained with homogenous crystal units.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE713618X | 1951-11-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB713618A true GB713618A (en) | 1954-08-11 |
Family
ID=6624046
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB27669/52A Expired GB713618A (en) | 1951-11-03 | 1952-11-03 | Piezoelectric elements for electromechanical transducers |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB713618A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5834879A (en) * | 1996-01-11 | 1998-11-10 | Wac Data Services Co., Ltd. | Stacked piezoelectric actuator |
-
1952
- 1952-11-03 GB GB27669/52A patent/GB713618A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5834879A (en) * | 1996-01-11 | 1998-11-10 | Wac Data Services Co., Ltd. | Stacked piezoelectric actuator |
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