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Analog ElectronicsPower Amplifiers

Which power-amplifier class normally offers the best linearity but relatively poor efficiency?

  • AClass A
  • BClass B
  • CClass C
  • DSwitching class D
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Correct Answer: A. Class A
Explanation: Class-A operation keeps the device conducting throughout the cycle, providing high linearity at the cost of substantial quiescent power dissipation.
Reference: Standard analog electronics: power amplifiers
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