Question
Download Solution PDFFor simple fixed bias BJT in common emitter configuration using NPN transistor, base resistance Rb, collector resistance Rc and supply voltage Vcc, the base current __________ with increase in Rb and the emitter current ____________.
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFFixed bias circuit
The base current is given by:
\(I_B={V_{CC}-V_{BE}\over R_B}\)
So if RB increases, then IB decreases.
And the emitter current is given by:
\(I_E=(1+\beta)I_B\)
If IB decreases, then IE also decreases.
Last updated on Jun 16, 2025
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