Crossover distortion is a type of distortion that occurs in class B and AB amplifiers when the output signal transitions between the positive and negative halves of the waveform, resulting in a non-linear region around the zero crossing point. This distortion is caused by the time delay and voltage drop required to turn on the transistors, leading to a loss of signal fidelity especially at low signal levels.

Crossover Distortion

Crossover distortion

Class B amplifiers

Class AB amplifiers

output signal transitions

positive and negative halves

A waveform is a graphical representation of the variation of a signal over time, typically illustrating how the amplitude, frequency, and phase of the signal change. It is fundamental in fields like acoustics, electronics, and physics, where understanding waveforms is crucial for analyzing and manipulating signals.

waveform

non-linear region

zero crossing point

Time delay refers to the period between the initiation of an action or event and its observable effect or outcome. It is a critical factor in systems and processes, affecting stability, feedback, and control mechanisms across various fields such as engineering, economics, and biology.

time delay

Voltage drop refers to the reduction in voltage in an electrical circuit between the source and load, caused by the impedance of the conductors. It is crucial to manage voltage drop to ensure efficient operation and to prevent damage to electrical equipment.

voltage drop

Transistors are semiconductor devices used to amplify or switch electronic signals and electrical power, forming the fundamental building blocks of modern electronic devices. They revolutionized technology by enabling the miniaturization and increased power of circuits, leading to the development of computers, smartphones, and other digital devices.

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