DE738063C - Piezoelectric device - Google Patents
Piezoelectric deviceInfo
- Publication number
- DE738063C DE738063C DEA85220D DEA0085220D DE738063C DE 738063 C DE738063 C DE 738063C DE A85220 D DEA85220 D DE A85220D DE A0085220 D DEA0085220 D DE A0085220D DE 738063 C DE738063 C DE 738063C
- Authority
- DE
- Germany
- Prior art keywords
- crystal
- piezoelectric
- piezoelectric device
- plates
- crystal plates
- 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 claims description 16
- 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 claims description 2
- 235000011006 sodium potassium tartrate Nutrition 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 241001465754 Metazoa Species 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 239000012182 japan wax Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 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)
- Piezo-Electric Transducers For Audible Bands (AREA)
Description
Piezoelektrisches Gerät Die Erfindung bezieht sich auf piezoelektrische Geräte, deren piezoelektrische Elemente aus zwei sich nach Art einer Sattel- bzw. Schraubenfläche deformierenden Seignette-Salz-Kristallen bevorzugter Wachstumsrichtung bestehen, insbesondere auf Mikrophone oder Lautsprecher.Piezoelectric Device The invention relates to piezoelectric devices Devices, the piezoelectric elements of which are made up of two Helical deforming Seignette salt crystals with a preferred growth direction insist, especially on microphones or speakers.
Die bisher üblichen piezoelektrischen Lautsprecher und Mikrophone verwenden als schwingendes Kristallsystem Platten, die aus einem großen Kristall tierausgesägt sind. Die Festigkeit dieser ausgesägten Kristallplatten ist jedoch gering, da oft auch Platten senkrecht oder schräg zur c-Achse tierausgesägt werden müssen. Diese geringe Festigkeit der senkrecht zur c-Achse tierausgesägten Platten beruht auf Schichtbildungen während der Entstehung der Kristalle.The piezoelectric loudspeakers and microphones commonly used up to now use plates made of one large crystal as the oscillating crystal system are sawn out of animals. However, the strength of these sawed-out crystal plates is low, as panels are often sawn out vertically or at an angle to the c-axis have to. This low strength of the panels sawn out perpendicular to the c-axis is based on the formation of layers during the formation of the crystals.
Gemäß der Erfindung werden diese Nachteile dadurch vermieden, daß als schwingendes Plattensystem Kristallplatten Verwendung finden, die nur in der c-Richtung gewachsen sind und den Keimling nicht mehr enthalten. Derartige Platten arbeiten besonders günstig und stabil. Sie besitzen einen guten Wirkungsgrad und große Verzerrungsfreiheit. Die günstige Wirkung solcher Kristallplatten beruht offenbar darauf, daß sie eine besonders große Homogenität und Festigkeit aufweisen.According to the invention, these disadvantages are avoided in that as a vibrating plate system crystal plates are used, which are only used in the c-direction have grown and no longer contain the seedling. Such plates work particularly cheaply and stably. They have good efficiency and great freedom from distortion. The beneficial effect of such crystal plates is apparently based on the fact that they have a particularly great homogeneity and strength.
Es ist an sich bekannt, piezoelektrische Kristalle in der Weise herzustellen, daß das Ausgangsgebilde nicht im Fertigkristall eingeschlossen ist.It is known per se to produce piezoelectric crystals in such a way that that the initial structure is not included in the finished crystal.
Die obenbeschriebenen Kristallplatten lassen sich in allen bisher bekannten piezoelektrischen Vorrichtungen verwenden. Zwei sich nach Art einer Sattel- und Schraubenfläche deformierende, künstlich gewachsene Kristallplatten sind auf beiden Seiten mit aufgedampften Silberelektroden versehen und die beiden Kristallplatten durch ein Bindemittel, beispielsweise. Japanwachs, miteinander unverschiebbar verklebt. Die inneren Elektroden sind miteinander verbunden und erhalten das entgegengesetzte Potential gegenüber den außen miteinander verbundenen Elektroden. Die Vorteile der erfindungsgemäßen Verwendung der künstlich gewachsenen Kristallplatten liegen neben der verzerrungs- und oberschwingungsfreien Wiedergabe vor allem in der billigeren und leichteren Herstellung der Kristallsysteme, die außerdem an Lautstärke und Empfindlichkeit den bisherigen weit überlegen sind.The above-described crystal plates can be used in all so far use known piezoelectric devices. Two in the manner of a saddle and helical deforming, artificially grown crystal plates are on Both sides are provided with vapor-deposited silver electrodes and the two crystal plates by a binder, for example. Japan wax, mutually immovable glued. The inner electrodes are connected to each other and receive the opposite Potential in relation to the electrodes connected to one another on the outside. The advantages of Use according to the invention of the artificially grown crystal plates are adjacent the distortion-free and harmonic-free playback, especially in the cheaper and easier production of the crystal systems, which also increases in volume and sensitivity are far superior to the previous ones.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEA85220D DE738063C (en) | 1937-12-18 | 1937-12-18 | Piezoelectric device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEA85220D DE738063C (en) | 1937-12-18 | 1937-12-18 | Piezoelectric device |
Publications (1)
Publication Number | Publication Date |
---|---|
DE738063C true DE738063C (en) | 1943-08-03 |
Family
ID=6949413
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEA85220D Expired DE738063C (en) | 1937-12-18 | 1937-12-18 | Piezoelectric device |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE738063C (en) |
-
1937
- 1937-12-18 DE DEA85220D patent/DE738063C/en not_active Expired
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