High pressure low impedance electrostatic transducer

H - Electricity – 04 – R

Patent

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Details

H04R 19/02 (2006.01) B06B 1/02 (2006.01) G01H 11/06 (2006.01) H02N 1/00 (2006.01)

Patent

CA 2159900

An electrostatic transducer in which two sheets (40, 42) are separated by a gas-filled gap. The sheets have conductive surfaces for imposing electric fields within the gap when an electrical potential is applied across the sheets. A flexible mechanism (43) maintains the gap at a desired time-averaged thickness. The gap is made up of a plurality of thick regions (47) and a plurality of thin regions (48). Both regions have a total projected area which is a substantial portion of the total area of one of the sheets. The average thickness of the gap in the thick regions greatly exceeds (by at least ten times) the gap's average thickness in the thin regions. The electrostatic field energy of the electric fields is concentrated in the thin regions.

L'invention concerne un transducteur électrostatique dans lequel deux feuilles (40, 42) sont séparées par un espace rempli de gaz. Les feuilles ont des surfaces conductrices afin d'imposer des champs électriques dans l'espace lorsqu'un potentiel électrique est appliqué dans les feuilles. Un mécanisme de positionnement flexible (43) maintient l'espace à une épaisseur moyenne désirée. L'espace est constitué d'une pluralité de régions épaisses (47) et d'une pluralité de régions minces (48). Les deux régions ont une surface totale saillante qui représente une partie importante de la surface totale d'une des feuilles. L'épaisseur moyenne de l'espace des régions minces dépasse largement (d'au moins dix fois) l'épaisseur moyenne de l'espace des régions minces. L'énergie de champ électrostatique des champs électriques est concentrée dans les régions minces.

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