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Analog ElectronicsPower Amplifiers

A class-AB output stage is biased so that each output device conducts for?

  • ALess than 180 degrees
  • BExactly 180 degrees
  • CMore than 180 degrees but less than 360 degrees
  • DExactly 360 degrees in every design
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Correct Answer: C. More than 180 degrees but less than 360 degrees
Explanation: Class-AB operation lies between class A and class B; each device conducts for more than half a cycle but less than the full cycle.
Reference: Standard analog electronics: class-AB conduction angle
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