Speaker with voice coil and field coil

专利名称：Speaker with voice coil and field coil发明人：Geoffrey A. Boyd申请号：US13849494申请日：20130323公开号：US058597B2公开日：20150217

专利附图：

摘要：A magnet-less electromagnetic voice coil actuator comprises a pot core magnetstructure having a magnetic flux conductive core, a field coil within the pot core magnetstructure for generating magnetic field through the magnetic flux conductive core andacross an air gap, a voice coil wound on a voice coil former forming an under-hung voice

coil design within the air gap and an electronic signal processor configured to split anaudio input signal into a positive definite field coil signal and a bipolar voice coil signal.The voice coil and the field coil are each driven by an amplified signal derived from theaudio input signal to create an actuation force. The bipolar voice coil signal is adjusted sothat the product of the bandwidth limited positive definite field coil current and thebipolar voice coil current, hence the actuation force, is a linear function of the bipolaraudio input current.

申请人：Coleridge Design Associates

地址：San Jose CA US

国籍：US

代理机构：Minisandram Law Firm

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