The working principle of the moving coil receiver

Moving coil receiver of the working principle and the speaker (speaker) are basically the same. It also completed the by electric > > sound two conversion. Finally, the electric energy is converted into energy. Different with the speaker is: diaphragm a voice not directly coupled with air, but to rely on and out sound holes through the damping after radiation, that is membrane to send voice is after the acoustic components (tune and a sound hole) to make our ears heard the voice. At this time the vibration of the system is mainly affected by the acoustic impedance control, acoustic resistance is bigger, wider frequency range of acoustic impedance control, so we call receiver is a damping control element. 

We are now producing mobile phone with receiver, due to the use of space and the specific conditions of the has and the receiver structure of the past are different, for the basic frame of the damping is basically did not add, for front lid damping are often used in fine mesh. These are in fact increases the difficulty of production is more simple structure, we often say more difficult production, because of the error components can be adjust, can compensate each other parameters. For example: the F0 receiver diaphragm trace difference method, the B value of the floating magnet trace can be used to cover the damping. So the design staff in the design of the product must be careful for process design, we tell you to leave the rear, to ensure the feasibility of mass production.