Question
A common emitter amplifier circuit has a transistor with $\beta=100$ and $r_{i b}=2 \mathrm{k} \Omega$. If the circuit provides $R_{\text {Leq }}=6 \mathrm{k} \Omega$, what is the small-signal voltage gain?
Step 1
We have: - Transistor current gain, \(\beta = 100\) - Input resistance, \(r_{ib} = 2 \, \text{k}\Omega\) - Load resistance, \(R_{\text{Leq}} = 6 \, \text{k}\Omega\) Show more…
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A transistor has the following parameters in a common-emitter circuit \[ \begin{array}{c} h_{i e}=2640 \Omega, \quad h_{r e}=2.6 \times 10^{-4} \\ h_{f e}=72, \quad h_{o e}=16 \mu \mathrm{S}, \quad R_{L}=100 \mathrm{k} \Omega \end{array} \] What is the voltage amplification of the transistor? How many decibels gain is this?
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