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Measurements & InstrumentationData Acquisition

A sample-and-hold circuit in a data-acquisition system is used to?

  • AHold the analog input approximately constant during conversion
  • BGenerate random samples
  • CEliminate the ADC
  • DConvert digital output to AC power
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Correct Answer: A. Hold the analog input approximately constant during conversion
Explanation: The hold capacitor maintains the sampled input level while the ADC completes conversion.
Reference: Standard measurements and instrumentation: data acquisition
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