Topic: Analog Circuits
What is a key advantage of Class AB amplifiers over Class B?
- A. Lower bias current
- B. Higher crossover distortion
- C. No need for heat sinks
- D. Reduced crossover distortion
Answer: D. Reduced crossover distortion
Explanation: Class B amplifiers suffer from crossover distortion because the transistors stop conducting when the input signal is near zero volts (within the threshold deadband). Class AB amplifiers solve this by providing a small quiescent bias current to keep the transistors slightly on, thereby significantly reducing crossover distortion.