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The working principle of power amplifier

One of the most simple sound system includes audio, power amplifier and speakers, one of the few pieces of equipment quality determines the quality of system. The power amplifier as an audio system power, between the source and the speaker between plays the role of a bridge.

Power amplifier principle is very simple, intuitive that will sound playback various sound signal is amplified to drive the loudspeaker to sound. From a technical point of view, power amplifier is a current modulator, which changes AC to DC, and then by the audio playback the voice signal control, the different current with different frequency are transmitted to the speaker, the speaker will give corresponding size, corresponding to the frequency of the sound. Because of the consideration of power, impedance, distortion, dynamic and different scope of use and control function, different power amplifier in the signal processing and circuit design, the production process also each are not identical. The traditional power amplifier through development of a few years, there has been no particular classification, until in recent years along with the audio and video playback device development and video software are abundant, making many audio manufacturer in the traditional power amplifier based on the reference real cinema sound playback features, design and production of different types of