Question
Download Solution PDFThe current amplification factor for a transistor in a common base configuration is 0.75. If the emitter current is 4A, find the base current.
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFDifferent current gains of transistors
- Common emitter current gain (β) : \(\beta={I_C\over I_B}\)
- Common base current gain (α) : \(α={I_C\over I_E}\)
- Common collector current gain (γ) : \(\gamma={I_E\over I_B}\)
where, IC = Collector current
IB = Base Current
IE = Emitter current
Calculation
Given, IE = 4A
α = 0.75
IC = α × IE = 0.75 × 4 = 3A
IE = IC + IB
4 = 3 + IB
IB = 1A
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