Electroacoustic transducer with improved shock resistance
摘要：
A transducer which is particularly suitable for hearing aids is set forth which has improved resistance to mechanical shock. The transducer includes a coil having a tunnel, a magnetic member with a pair of magnets defining an air gap and an armature extending through the tunnel and into the air gap. The coil is rotated with respect to the magnetic member in a manner such that the coil forms a stop for the armature, thus preventing excessive deflection of the armature leg in the occurrence of a shock. The armature may also be provided with expanded edge portions which assist in limiting its deflection.
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DOI：
US6075870 A
被引量：
年份：
1970
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