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Analog ElectronicsAnalog Signal Processing

A sample-and-hold circuit uses a capacitor primarily to?

  • AStore the sampled analog voltage between sampling instants
  • BGenerate a clock without any switch
  • CIncrease transistor beta
  • DRectify the input continuously
Report an error
Correct Answer: A. Store the sampled analog voltage between sampling instants
Explanation: During sample mode the capacitor charges to the input level; during hold mode it retains that voltage as closely as practical.
Reference: Standard analog electronics: sample-and-hold
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