PLANAR ELECTRODYNAMIC ELECTROACOUSTIC CONVERTER WITH MATRIX STRUCTURE BASED ON EQUILATERAL TRIANGLES Russian patent published in 2021 - IPC H04R9/04 

FIELD: acoustic systems.

SUBSTANCE: invention relates to the field of acoustic systems, in particular to isodynamic emitters, it is intended for use in acoustic sound reproduction systems for household and professional purposes. The technical result is achieved in a planar electrodynamic electroacoustic converter with a matrix structure based on equilateral triangles, containing a diaphragm and magnets located at a distance from the diaphragm with their electromagnetic field acting on the diaphragm. The magnets are arranged so that the magnets nearby to each other differ in the location of the polarities relatively to the diaphragm. On the diaphragm, in the gaps between the above-mentioned magnets, there is a conductive path with the formation of a continuous current path. The shape of the conductive path forms a matrix of triangular equilateral cells of two types, which are located close to each other so that each cell of one type borders on each side with the cells of the other type. The sections of the conductive path that limit each cell of the first type have a clockwise current direction, and the sections of the conductive path that limit each cell of the second type have a counterclockwise current direction. The permanent magnets of the two types differ in the location of polarities relatively to the diaphragm and are located so that the magnets of the first type are located in the centers of the cells of the first type, and the magnets of the second type are located in the centers of the cells of the second type. Each cell can be bounded by several parallel rows of sections of the conductive path having a current of one direction. One of the surfaces of the magnet facing the plane of the diaphragm may be conical. The surface of the magnet facing the plane of the diaphragm can be a hemisphere. The surface of the magnet facing the plane of the diaphragm can be an ellipsoid. The magnet can have a cylindrical shape with rounded edges. The magnet can have a cylindrical shape with chamfers.

EFFECT: invention is aimed at reducing the transient and phase distortions of the reproduced signal of the emitter due to the deformation of the diaphragm.

7 cl, 8 dwg