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公开(公告)号：US3829623A
公开(公告)日：1974-08-13
申请号：US25138872
申请日：1972-05-08
发明人： WILLIS J , URQUHART PULLEN D
摘要： An audio-transducer incorporates a diaphragm carrying a current conductor and a plurality of permanent magnets constituting a magnet unit disposed in spaced relationship to the conductor. The magnets are formed of a material consisting of magnetizable particles embedded in a matrix of non-magnetic material. The diaphragm may be curved and/or corrugated.
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