Question

The common drain amplifier circuit shown in Figure P12.19 utilizes a transistor with $g_m=3.8 \mathrm{mS}$ and $R_S=4 \mathrm{k} \Omega$. (a) Compute the small-signal voltage gain. (b) If a different transistor is used with $g_m=10 \mathrm{mS}$, what is the new value of the voltage gain? Figure P12.19 can't copy

   The common drain amplifier circuit shown in Figure P12.19 utilizes a transistor with $g_m=3.8 \mathrm{mS}$ and $R_S=4 \mathrm{k} \Omega$. (a) Compute the small-signal voltage gain. (b) If a different transistor is used with $g_m=10 \mathrm{mS}$, what is the new value of the voltage gain?
Figure P12.19 can't copy

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Essentials of Electrical and Computer Engineering

Essentials of Electrical and Computer Engineering

David V. Kerns, Jr.,… 1st Edition

Chapter 12, Problem 19

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Step 1

The voltage gain can be expressed as: \[ A_v = \frac{g_m R_S}{1 + g_m R_S} \] where \( g_m \) is the transconductance and \( R_S \) is the source resistance. Show more…

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The common drain amplifier circuit shown in Figure P12.19 utilizes a transistor with $g_m=3.8 \mathrm{mS}$ and $R_S=4 \mathrm{k} \Omega$. (a) Compute the small-signal voltage gain. (b) If a different transistor is used with $g_m=10 \mathrm{mS}$, what is the new value of the voltage gain? Figure P12.19 can't copy

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