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Electronic Devices & CircuitsOptoelectronic Devices

An optocoupler is primarily used when a circuit requires?

  • AElectrical isolation while transferring a signal optically
  • BLarge DC power amplification without isolation
  • CFrequency division only
  • DMechanical switching only
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Correct Answer: A. Electrical isolation while transferring a signal optically
Explanation: An optocoupler uses a light emitter and photosensitive receiver to transfer information across an electrically isolated barrier.
Reference: Standard optoelectronics: optocoupler
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