DE2121609A1 - Electrostatic sound transducer with counter electrode made of sintered metal - Google Patents
Electrostatic sound transducer with counter electrode made of sintered metalInfo
- Publication number
- DE2121609A1 DE2121609A1 DE19712121609 DE2121609A DE2121609A1 DE 2121609 A1 DE2121609 A1 DE 2121609A1 DE 19712121609 DE19712121609 DE 19712121609 DE 2121609 A DE2121609 A DE 2121609A DE 2121609 A1 DE2121609 A1 DE 2121609A1
- Authority
- DE
- Germany
- Prior art keywords
- counter electrode
- electrostatic
- sound transducer
- sintered metal
- sound
- 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.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R19/00—Electrostatic transducers
Description
Elektrostatischer Schallwandler mit Gegenelektrode aus Sintermetall Elektrostatische Wandler finden in letzter Zeit sowohl im Lautsprecher- als auch im Mikrofonbetrieb immer mehr Anwendung. Die Tendenz geht hier zu einer wesentlich einfacheren und rationelleren Fertigung ohne dabei jedoch Qualität an akustischen Eigenschaften einbu6sen zu müssen.Electrostatic sound transducer with counter electrode made of sintered metal Electrostatic converters are found in both speaker and speaker systems lately more and more applications in microphone operation. The tendency here is towards a substantial one simpler and more efficient production without compromising acoustic quality Having to lose properties.
Normalerweise bestehen solche Kapseln aus mehreren Drehteilen, die über die geeigneten Isolatoren miteinander verbunden sind.Usually such capsules consist of several turned parts that are connected to one another via the appropriate isolators.
Die Gegenelektrode erhält dann in einer bestimmten Eonfiguration Bohrungen zur Bestimmung der akustischen Eigenschaften. Dies führt zu einer relativ aufwendigen Fertigung.The counter electrode is then bored in a specific configuration to determine the acoustic properties. This leads to a relatively complex Production.
Die nachstehend genannte Erfindung beseitigt diesen Nachteil dadurch, dass die Gegenelektrode aus einem vorgefertigten Sintermetallplättchen besteht, das in bekannter Weise luftdurchlässig ist und dessen Luftdurchlässe durch die Körnung des Sintermetalls beeinflusst werden können.The invention mentioned below overcomes this disadvantage by that the counter electrode consists of a prefabricated sintered metal plate, which is air-permeable in a known manner and its air passages through the grain of the sintered metal can be influenced.
Beiliegende Zeichnung Nr. 191 zeigt beispielsweise den erfindungsgemäss en Gegenstand.Attached drawing no. 191 shows, for example, the according to the invention en subject.
Entsprechend der Abbildung besteht die Kapsel aus einem Gehäuse a , in das die entsprechenden Elemente der gapsel eingebracht werden. Auf einen Haltering b ist die metallbedampfte Kunststofffolie ¢ aufgeklebt. Vber diesen Haltering b wird auch der elektrische Kontakt zwischen der metallischen Schicht der Folie c und dem Gehäuse a hergestellt. Die Sintergegenelektrode d wird mit dem Isolationskörper e im Gehäuse a gehalten und gegenüber diesem isoliert. Sintergegenelektrode d und Isolationskörper e werden mit dem Sprengring f im Gehäuse a halten.According to the figure, the capsule consists of a housing a , in which the corresponding elements of the gap are introduced. On a retaining ring b the metallized plastic film ¢ is glued on. About this retaining ring b the electrical contact between the metallic layer of the foil c and the housing a is made. The sintered counter electrode d is with the insulating body e held in the housing a and isolated from this. Sintered counter electrode d and Isolation body e will hold with snap ring f in housing a.
Die Kontaktierung der Gegenelektrode d erfolgt über die Kontaktfahne g , die zwischen Sintergegenelektrode d und Isolationskörper e gespannt-ist.The counterelectrode d is contacted via the contact tab g, which is stretched between the sintered counter-electrode d and the insulation body e.
Entsprechend einer weiteren Ausgestaltung der Erfindung ist es möglich, den Isolationskörper e akustisch nach hinten zu öffnen, um damit eine bestimmte Richtcharakteristik zu erreichen. Dies entspricht einer Verwendung der Kapsel als z.B. Eondensator-Mikrofon mit Nierencharakt erist ik, Die akustischen Eigenschaften der Kapsel lassen sich in bekannter Weise durch die Dimensionierung des Vorfeldes der Membrane und ebenso durch die Dimensionierung des Hohlraumes-hinter der Gegenelektrode beeinflussen.According to a further embodiment of the invention, it is possible to open the insulation body e acoustically to the rear in order to achieve a certain To achieve directional characteristics. This corresponds to a use of the capsule as E.g. condenser microphone with cardioid characteristics, the acoustic properties the capsule can be adjusted in a known manner by the dimensioning of the apron the membrane and also through the dimensioning of the cavity behind the counter electrode influence.
Claims (5)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19712121609 DE2121609A1 (en) | 1971-05-03 | 1971-05-03 | Electrostatic sound transducer with counter electrode made of sintered metal |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19712121609 DE2121609A1 (en) | 1971-05-03 | 1971-05-03 | Electrostatic sound transducer with counter electrode made of sintered metal |
Publications (1)
Publication Number | Publication Date |
---|---|
DE2121609A1 true DE2121609A1 (en) | 1972-11-09 |
Family
ID=5806613
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19712121609 Pending DE2121609A1 (en) | 1971-05-03 | 1971-05-03 | Electrostatic sound transducer with counter electrode made of sintered metal |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE2121609A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3242555A1 (en) * | 1981-11-20 | 1983-05-26 | Western Electric Co., Inc., 10038 New York, N.Y. | ACOUSTIC ELECTRIC TRANSFORMER |
-
1971
- 1971-05-03 DE DE19712121609 patent/DE2121609A1/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3242555A1 (en) * | 1981-11-20 | 1983-05-26 | Western Electric Co., Inc., 10038 New York, N.Y. | ACOUSTIC ELECTRIC TRANSFORMER |
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