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Analog ElectronicsOperational Amplifier Applications

A full-wave precision rectifier is especially useful when the input amplitude is?

  • AComparable to or smaller than an ordinary diode forward drop
  • BAlways hundreds of volts
  • CExactly zero only
  • DA digital logic level only
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Correct Answer: A. Comparable to or smaller than an ordinary diode forward drop
Explanation: Op-amp feedback compensates much of the diode threshold error, allowing accurate rectification of low-level analog signals.
Reference: Standard analog electronics: full-wave precision rectifier
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