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This conducting angle is highly proportional with the Amplifiers on time during a full cycle. The input cycle is the conduction angle derives from the sinusoidal wave conduction in the amplifier input. Sometimes, improved version of traditional classes are assigned a letter to classify them as a different class of amplifier, like class G amplifier is a modified Amplifier class of Class B or Class AB amplifier.Ĭlasses of the amplifier represent the input cycle proportion when the current is passed through amplifier. Other Classes are modern amplifiers which use switching topologies and PWM (Pulse Width Modulation) technique to drive the output load. Out of those classes most commonly used audio amplifiers classes are A, B, AB, C. There are different classes of amplifiers starting from A, B, C, AB, D, E, F, T etc. According to their specifications, Amplifiers are assigned different letter or alphabets which represent their classes. Different type of power amplifiers gives different responses when passing current through them. So here we will explore different classes of amplifiers along with their advantages and disadvantages.Ĭlassifications of Amplifiers using LettersĪmplifier classes are the identity of amplifier’s performance and characteristics. But, other than this application-specific purpose, there are huge differences in various types of amplifiers, mainly in Power Amplifiers. In Audio related electronics pre-amplifier and power amplifiers are two different types of amplifier systems which are used for sound amplification related purposes. In electronics, Amplifier is the most commonly used circuit device with huge application possibilities.