Ndfeb magnetic materials, as a rare earth permanent magnet materials, the latest achievements because of their excellent magnetic function, known as "magnetic king". Ndfeb magnetic material is praseodymium neodymium metal, iron and boron alloy, also called magnetic steel. Ndfeb has a very high magnetic energy product with JiaoLi, high energy density advantages make the ndfeb permanent magnet material in the permanent magnets manufacturers and electronic technology has been widely used, and then make the instruments and meters, electronic motor, magnetization of the magnetic separation equipment miniaturization, lightweight, thin become possible.
Typically, ndfeb permanent magnet materials have high coercive force, natural environment and the condition of magnetic field will not render demagnetization and magnetic change. If the environment right, even after a long period of use, the magnet magnetic loss function is not much.
Ndfeb magnets are permanent magnet permanent magnet material, it contains elements dysprosium, terbium, cobalt, niobium, gallium, aluminum, copper, neodymium, iron, boron. In our practical application of the ndfeb permanent magnet materials and neodymium magnets temporary boron content than Nd2Fe14B compounds and neodymium boron content ability to obtain the better function of permanent magnet.
Now, ndfeb magnets in the application of electronic products is very throughout, so see more headphones as electronic products, one of the ndfeb permanent magnet material is how to work in?
Now most of the working principle of headphones are principle of moving coil, the coil and diaphragm together in same permanent magnetic field, and the signal current driver makes the diaphragm coil stock, then make a sound, just like a miniature speakers. About electrostatic headphones, although it works, but the effect method in some different, the diaphragm is very thin, thin to use micro meter. Unlike general headphones is diaphragm is in a change of the electromagnetic field, to sound diaphragm moving coil.
The intention of the ndfeb permanent magnet material in the moving coil headphones is the permanent
magnetic field, and will be fixed film piece of wire coil placed in a magnetic field signal current through the coil, then another magnetic field exists in coil, coil magnetic field and permanent magnetic field will transmit the force to the effect of diaphragm to each other. The effect of the two magnetic field force change makes the diaphragm, and the sound is produced.