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Draw and explain small signal hybrid-Pi model of BJT including early effect.
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written 4.6 years ago by
teamques10
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- The small Signal resistance$rπ$
- A dependent current source$gmVbe$.
- A small signal resistance$rπ$ is defined as,$rπ = {Vbe\over Ib}$
- Alternate equation for$rπ$ is$rπ= {Vbe\over IBQ}={πFVT\over ICQ}$
- $rπ$ is called as diffusion resistance or base emitter input resistance.Note that value of resistance is depends on Q-point parameters.
- At output side of transister …
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