Application Of ND-Fe-b In Electro-acoustic

In the engineering field of electro-acoustic devices, headphones, electro-acoustic devices, such as the basic structure is the same. Rare earth permanent magnet materials provide a constant magnetic field in the air gap; the voice coil of the wire hanging in the air gap, magnetic field perpendicular to the wire.

Electro-acoustic devices including: loudspeakers, hearing aids, pickup, stereo headphones, electro-acoustic transducers and a telephone receiver. The materials used are made of neodymium-Iron-Boron magnets, especially third generation rare earth Neodymium-Iron-Boron permanent magnetic acoustic devices to enable device small size, light weight, good music.

Current development trend of mobile phone is a versatile and compact, high performance ND-Fe-b permanent magnetic materials in the phone miniaturization and multi-function plays a key role.