What portion of the input cycle does the output of a class AB amplifier correspond to?

In a class AB amplifier, the output is designed to conduct for more than half of the input cycle, which translates to more than 180 degrees but less than 360 degrees. This operation allows the amplifier to combine the benefits of both class A and class B amplifiers by using two devices (transistors) to handle the signal. During each half of the input waveform, one transistor (the "positive" transistor) is active, while the other (the "negative" transistor) typically becomes active for the remainder of the cycle.

This setup is important for reducing crossover distortion, which can occur in class B amplifiers when transitioning between the two transistors. By conducting for more than 180 degrees, a class AB amplifier ensures that there is a smooth transition and that both transistors contribute to the amplification of the signal, allowing for better linearity and overall sound quality.

Thus, the correct answer appropriately reflects the operational characteristics of class AB amplification within the context of its conduction angle.