MICRO ELECTROMAGNETIC VIBRATION TRANSDUCER FOR IMPLANTABLEMIDDLE EAR HEARING AID

摘要

In this paper, we present micro electromagnetic vibration transducer forrnimplantable middle ear hearing aid, characterized with small size, high efficiency andrnselective frequency bandwidth. To make this, a new type of electromagnetic vibrationrntransducer that composed of wounded coil, permanent magnet and 4-beam cross typernsilicon elastic body is presented. The fabricated transducer is useful for the applicationrnof 1 ～ 4 mA of a current source, 0.5 ～ 32 dyne of a vibration peak force and at thernfrequency range of a 100 ～ 7000 Hz.