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Analog ElectronicsCurrent Mirrors

A Wilson current mirror is commonly preferred over a simple two-transistor mirror because it offers?

  • AImproved current accuracy and higher output resistance
  • BZero transistor count
  • CNo need for a reference current
  • DOnly AC operation
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Correct Answer: A. Improved current accuracy and higher output resistance
Explanation: The Wilson topology uses feedback to reduce base-current-related error and generally raises output resistance compared with a simple mirror.
Reference: Standard analog electronics: Wilson current mirror
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