Question

An amplifier using a BJT common emitter configuration is shown in Figure P12.23. If the following parameters apply, calculate (a) the input resistance of the amplifier and (b) the small-signal voltage gain. $$ r_{i b}=10 \mathrm{k} \Omega, \beta=120, r_o=200 \mathrm{k} \Omega . $$ Figure P12.23 can't copy

   An amplifier using a BJT common emitter configuration is shown in Figure P12.23. If the following parameters apply, calculate
(a) the input resistance of the amplifier and
(b) the small-signal voltage gain.
$$
r_{i b}=10 \mathrm{k} \Omega, \beta=120, r_o=200 \mathrm{k} \Omega .
$$
Figure P12.23 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 23

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Step 1

We have: - Input resistance of the base, \( r_{ib} = 10 \, \text{k}\Omega \) - Current gain (beta), \( \beta = 120 \) - Output resistance, \( r_o = 200 \, \text{k}\Omega \) Show more…

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An amplifier using a BJT common emitter configuration is shown in Figure P12.23. If the following parameters apply, calculate (a) the input resistance of the amplifier and (b) the small-signal voltage gain. $$ r_{i b}=10 \mathrm{k} \Omega, \beta=120, r_o=200 \mathrm{k} \Omega . $$ Figure P12.23 can't copy

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