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Rare earth permanent magnet high-speakers

 
Brilliant sunshine and the beautiful sounds we will bring endless fun. The modern life is inseparable from the rapid dissemination of information, the dissemination of information voice is even more indispensable electro-acoustic equipment, electro-acoustic equipment is one of the speakers, speaker manufacturing is the basis of permanent magnet materials, and rare earth neodymium iron PM boron alloy is very good speaker manufacturing materials.

Speaker is the working principle: permanent magnet yoke iron through the annular gap in the magnetic circuit produced a magnetic field, and speakers connected to the voice coil cone inserted in the annular gap, permanent magnet externally surrounded by iron yoke, so that we can avoid Stray magnetic field by outside interference, which in turn can decrease the permanent magnet magnetic field on the outside influence, when voices in the form of a current through the coil, the magnetic field will change because of the current strength in different frequencies of vibration, and thus promote cone a different frequency and strength of the voice. Which rare earth permanent magnet NdFeB magnets used instead of the traditional aluminum or nickel and cobalt ferrite magnets, etc., not only can improve the sensitivity of speakers, but also significantly reduce the amount of magnets. Power unchanged in the dissemination of the circumstances of the speaker has done small, thin and light. Because of this for all electrical equipment, household electrical appliances, automobile audio lightweight possibilities. For example, the same rated power of 50 W of loudspeakers, ferrite magnets, the magnets weighing 1.2 kg, the total weight of loudspeakers 2.4 kg. Using rare earth NdFeB Magnets, magnets weighing less than 50 grams, is the speaker of the total weight 750 grams, as compared to a magnet 2.4 times the weight reduction, weight reduction loudspeakers 3.2 times.