Dsp Amplifier-Industry Information

What are the differences between Class A, AB, and Class D power amplifiers


   Let's we talk about What are the differences between Class A, AB, and Class D power amplifiers ?

   Car dsp amplifier are divided into Class A amplifiers, AB amplifiers, B amplifiers and D amplifiers by line.

   Class A power amplifier: It is an amplifier designed for audiophile users. Its advantages are best linearity, almost negligible ultra-low distortion, smooth and natural sound in terms of sound performance, round and warm tone, high-frequency cheerful and transparent. The disadvantage is that the efficiency is extremely low. About 80% of the electrical energy is converted into thermal energy consumption, which results in high power consumption. Large-area heat sinks are required to eliminate the heat to work properly, resulting in a large volume of the amplifier and inconvenience in the car. Installation also involves issues such as insufficient car power supply.

   Class AB power amplifier: Most of the car power amplifiers belong to the class AB design, which is also the most widely used circuit design at present. Its advantages are that it can obtain good sound and greatly improve efficiency. (Good circuit design can achieve energy consumption. Rate is over 60%) and effectively solves the problem of heat dissipation. On the one hand, it solves the problem of insufficient power supply in the car, and on the other hand, it can be adjusted to class A sound through tuning. It is one of the most popular automotive power amplifiers at present.

Class AB Power Amplifier

   Class D power amplifier: The advantage is that it has the highest efficiency, the power supply can be reduced, and almost no heat is generated. Therefore, a large radiator is not required, the body volume and weight are significantly reduced, and theoretically, the distortion is low and the linearity is good. However, this kind of power amplifier is complicated to work, and the added circuit itself is inevitable to have deviations, so there are very few successful products and the price is not cheap.

 Class D Power Amplifier


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