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Electronic Devices & CircuitsBJT Amplifiers

A common-base BJT amplifier typically has a current gain that is?

  • AMuch greater than beta
  • BApproximately alpha and slightly less than unity
  • CExactly zero
  • DAlways negative
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Correct Answer: B. Approximately alpha and slightly less than unity
Explanation: The common-base current gain is alpha = IC/IE, normally close to but less than 1.
Reference: Standard analog electronics: common-base configuration
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