Consider the common emitter BJT amplifier shown in Figure 3.1. The input voltage v1 comprises the sum of a DC bias voltage V₁ = 0.7V and a sinusoid of the form v₁ = A sin wt, where A = 0.001V. For the values shown, you may assume that A is very small compared to V₁. You may further assume that the BJT always operates in its active region. Figure 3.2 shows a small signal model for the BJT operating in its active region. Let the output voltage vo comprise a DC bias term Vo and a small-signal response term Vo. BiB VBE (a) BJT iE E 100 ΚΩ 0.001 V sin(cor) w VCE 0.7 V Figure 3.1 Figure 3.2 15 V 50 ΚΩ Vo B = 100 Bib Bib E (b) BJT small signal model a) Determine the output operating point voltage Vo for the input bias of V₁ = 0.7V. b) Draw the small signal equivalent circuit for the amplifier. c) Determine the small signal gain of the amplifier. d) What is the value of vo, the small signal component of the output, given the small signal input shown in Figure 3.1.

Consider the common emitter BJT amplifier shown in Figure 3.1. The input voltage v1 comprises the sum of a DC bias voltage V₁ = 0.7V and a sinusoid of the form v₁ = A sin wt, where A = 0.001V. For the values shown, you may assume that A is very small compared to V₁. You may further assume that the BJT always operates in its active region. Figure 3.2 shows a small signal model for the BJT operating in its active region. Let the output voltage vo comprise a DC bias term Vo and a small-signal response term Vo. BiB VBE (a) BJT iE E 100 ΚΩ 0.001 V sin(cor) w VCE 0.7 V Figure 3.1 Figure 3.2 15 V 50 ΚΩ Vo B = 100 Bib Bib E (b) BJT small signal model a) Determine the output operating point voltage Vo for the input bias of V₁ = 0.7V. b) Draw the small signal equivalent circuit for the amplifier. c) Determine the small signal gain of the amplifier. d) What is the value of vo, the small signal component of the output, given the small signal input shown in Figure 3.1.

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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