Working principle of electric loudspeaker

The speaker is an electroacoustic transducer, which converts the electric energy into energy through the physical effect.
electric speaker since the establishment, has 75 years of history for a long time. The structure can be greatly improved, so that the performance of the speaker has improved greatly, but the basic principle is not to do what makes the change of.
1. electric loudspeaker to vibration force (Lorentz force) {i.e. the magnetic field force on a current carrying conductor is generally called F=BLI} for the electric force effect transducer (B: magnetic induction density Webb / M 2; L: represents the length of the wire; I: said the current intensity is A
2. however, once the voice coil motor, will cut the magnetic gap magnetic field lines, so that the voice coil induced electromotive force, this effect is known as electric electric transducer. E=BLV (E V induction force and EMF) electric effect
3. electromotive force transducer always exist at the same time, help the electric impedance on the voice coil effect will exert great influence. Br/>4: structural vibration Dynamic plate cone paper a vibration system of the vast voice coil voice coil baffle damper magnet (iron) magnet yoke (plate, t iron yoke B magnetism circuit board Hua Si plate pole piece center pole bracket Tie Pen frame vector paper (paper) gasket C body terminal terminal guide line leader dust cover cap