Hengdian Dongyang City, Kim Dae magnetic factory ----- magnetic tips: 1 magnetic field: the role of space for generating a magnetic pole .2 magnetic field strength: the size of the magnetic field (H) energizing coil generated per unit length of the screw .H tube size field is the number of turns n is flowing through the solenoid current I (A) generated by the magnetic flux density = n * I3 B:. vacuum permeability μ of the magnetic field strength is multiplied by B = μ * H4. flux ∮: a certain area of ??the magnetic flux density .∮ adopted = B * S (S for the unit area) 5 maximum energy product BH (max):.. refers to the minimum volume of the magnetic field the strongest .6 get coercivity H: is refers to the state of ring magnet magnetized offer, is achieved by applying a reverse magnetic field strength required for the magnetization reversal if the magnetization reversal by moving the magnetic domain walls is carried out. hinder the movement of the magnetic domain walls is the force of the coercive .7 force remanence B:. from saturation magnetic body magnetic field (including from the back field) monotonically decreases to saturation hysteresis loop 8 along the surface magnetic field strength of zero magnetic induction (flux density): the surface of the permanent magnet The magnetic flux density of a specified location .9 magnetic anisotropy: in different crystallographic directions, the presence of the easy magnetization direction and the hard magnetization direction it is completely determined by the nature of the substance itself Hengdian Kim Dae-magnetic Factory -. --- whispered horn dual voice coil speaker dual voice coil speaker worry point: dual voice coil speaker worry point is to have more wiring method, alone in a dual voice coil speaker can choose three convergence, serial, parallel, and Independent connection. For example: Each coil 4 ohm dual voice coil speaker ring magnets Which benefits, after two voice coils in series into 8 ohm speakers: two magnets in parallel after the ring magnet coil manufacturers into 2 ohm speakers, suppose you The car amplifier for driving high impedance speaker and planning, it is possible to adopt a method of convergence of two voice coils in series; a ring magnet manufacturers, ring magnets, Kim Dae-magnetic plant quality assured by big magnetic Hengdian gold plant. Hengdian Dongyang City, Kim Dae-magnetic Factory (www.jjdct.cn) strong, credible, Zhejiang Jinhua electronics, electrical products manufacturing equipment industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Kim Dae-magnetic plant into the brilliant and you work for a better future!