5. Figure 10 shows a single-transistor common-emitter amplifier with capacitive coupling and a re- sistive load RL. Vin + C₁ R₁ 78 k 100 μF 781 RC 3.5 k 3.5 C2 HH 100 μF Vout 50 ΚΩ RL R2 10 k RE 500 Ω Figure 10: Transistor amplifier. 15 V+Vcc (a) Carefully draw the small-signal equivalent circuit of this amplifier. Make sure you simplify your equivalent circuit as much as possible. (b) Derive symbolic expressions for the following small-signal quantities. (i) The small-signal voltage gain Av. (ii) The small-signal input resistance Rin (c) A DC analysis of the circuit reveals the collector and base bias currents to be Ic = 2mA and IB = 16 μA respectively. Find numerical values for A, and Rin assuming that the thermal voltage is VT 26 mV. =

5. Figure 10 shows a single-transistor common-emitter amplifier with capacitive coupling and a re- sistive load RL. Vin + C₁ R₁ 78 k 100 μF 781 RC 3.5 k 3.5 C2 HH 100 μF Vout 50 ΚΩ RL R2 10 k RE 500 Ω Figure 10: Transistor amplifier. 15 V+Vcc (a) Carefully draw the small-signal equivalent circuit of this amplifier. Make sure you simplify your equivalent circuit as much as possible. (b) Derive symbolic expressions for the following small-signal quantities. (i) The small-signal voltage gain Av. (ii) The small-signal input resistance Rin (c) A DC analysis of the circuit reveals the collector and base bias currents to be Ic = 2mA and IB = 16 μA respectively. Find numerical values for A, and Rin assuming that the thermal voltage is VT 26 mV. =

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

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