An electrodynamic transducer

H - Electricity – 04 – R

Patent

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Details

H04R 9/00 (2006.01) H04R 7/04 (2006.01) H04R 9/06 (2006.01) H04R 31/00 (2006.01)

Patent

CA 2182610

An electrodynamic acoustic transducer has its diaphragm with a coil retained with respect to the magnetic system in discrete points along the periphery of the diaphragm, while the rest of the periphery of the diaphragm is not fixed. The diaphragm has tongues at its periphery which are thicker than the rest of the diaphragm, and which are retained between two ring- shaped engagement faces, which, in the preferred embodiment, are formed by a magnetic system which is arranged symmetrically on both sides of the diaphragm. The diaphragm has a flat coil with spirally wound windings, and the diaphragm with coil and termination is supplied integrally with a web of sheet or a film roll comprising a large number of diaphragms, making the diaphragm useful for mounting in the transducer by tape automated bonding.

Transducteur acoustique électrodynamique dont la membrane comporte une bobine retenue par rapport au système magnétique par des points séparés le long de la périphérie de la membrane, le reste de cette périphérie n'étant pas fixé. Cette membrane présente sur sa périphérie des languettes plus épaisses que sur le reste de la membrane, retenues entre deux faces de contact en forme d'anneau, lesquelles, dans le mode de réalisation préféré, sont formées par un système magnétique disposé symétriquement de chaque côté de la membrane. La membrane présente une bobine plate dotée d'enroulements en spirale, cette membrane ainsi que la bobine et la terminaison étant monobloc avec une bande de papier ou un rouleau de film comprenant un grand nombre de membranes, rendant ainsi la membrane prête à être montée dans le transducteur par soudage sur bande.

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