Electro-acoustic transducer
AssigneeKabushiki Kaisha Audio-Technica
InventorHiroshi Akino
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Abstract
In an electro-acoustic transducer including a needle electrode and a counter electrode facing the needle electrode and inducing electric discharge between the needle electrode and the counter electrode for electro-acoustic conversion by an RF voltage applied across the needle electrode and the counter electrode, the counter electrode has a cylindrical surface surrounding plasma extending from the needle electrode and has a cutout in a part of the cylindrical surface. This configuration prevents a short circuit between the needle electrode and the counter electrode due to plasma.
Claims6
An electro-acoustic transducer comprising a needle electrode and a counter electrode facing the needle electrode and inducing electric discharge between the needle electrode and the counter electrode for electro-acoustic conversion by an RF voltage applied across the needle electrode and the counter electrode, wherein
- the counter electrode has a cylindrical surface surrounding plasma extending from the needle electrode and has a cutout in a part of the cylindrical surface.
Dependencies are inferred from the claim text.