Miniature voice coil with integrated coupling coil
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United States of America Patent
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Jan 17, 2012
Grant Date -
Jan 1, 2009
app pub date -
Jun 19, 2008
filing date -
Jun 20, 2007
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The present invention relates to a miniature electro-acoustic transducer comprising a voice coil comprising an air gap voice coil portion at least partly positioned in an air gap of a magnet assembly, and a second voice coil portion attached to a diaphragm of the miniature transducer. The thickness of the second voice coil portion is 2-5 times larger than the thickness of the first voice coil portion. Moreover, the present invention relates to a voice coil for use in a miniature electro-acoustic transducer.
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