What is the working principle of a loudspeaker?
The smaller size is suitable for the use of teachers and guides. They are hung on the waist to make the hands more free, and the power is usually 3W-8W. Large, suitable for outdoor activities, summer camps, extra-curricular lectures, such as large traffic flow, power is 35W---95W. The loudspeaker is according to the use of lithium battery type as a classification of. It solves the environmental pollution problem of traditional dry battery, it is mainly used for power amplifier of mobile phone lithium battery technology.
The loudspeaker, as its name suggests, means to amplify the sound and spread it further. The loudspeaker has more penetrating power than the speakers.According to the mode of use: can be divided into wired amplifiers and wireless speakers;According to the use: it can be divided into teaching type, loudspeaker, guide type loudspeaker, entertainment loudspeaker.Loudspeakers can be divided into several types according to their size, mode of use and use. Each has its advantages. Portable speakers are generally only power 3--8W because of shape, size, and horn. But the wireless megaphone and the wired loudspeaker are different in size and different in use.
When the coil in the loudspeaker is energized, the coil will produce a magnetic field. When the coil is in contact with the magnetic field of the magnet, the coil will vibrate, and the vibration will make a sound. It is the force acting on the conducting conductor in the magnetic field. When the AC audio current passes through the coil of the speaker (voice coil), the corresponding magnetic field is generated in the coil. The magnetic field produces an interaction with the magnetic field produced by the permanent magnet on the speaker. This force causes the loop to vibrate with the audio current in the magnetic field of the speaker's permanent magnet. The diaphragm of the loudspeaker is connected with the coil, so the diaphragm vibrates. The vibration produces the same sound as the original audio signal.Turn left and turn right |
