### Transcription for Educational Website---**Title: Drawing the Small Signal Model for a Given Circuit****Introduction:**In this tutorial, we will delve into the process of drawing the small signal model for the given circuit. This is a crucial step in analyzing and understanding the behavior of electronic circuits, especially in signal processing applications.**Circuit Analysis:**Let’s consider the circuit shown below where our primary goal is to draw the corresponding small signal model.**[Image of Circuit Provided]****Components & Connections:**The circuit comprises the following components:1. **Resistors:** - **R1:** Connected between the supply voltage \( V_{cc} \) and the input point. - **R2:** Connected between the input point and the ground. - **Re:** Connected between the emitter of transistor Q2 and the ground. 2. **Capacitor:** - **C:** Connected between the input node (where \( V_{in} \) is applied) and the base of transistor Q2. 3. **Transistors (BJTs):** - **Q1:** NPN transistor with its collector connected to \( V_{cc} \) and its emitter connected to the collector of Q2. - **Q2:** NPN transistor with its emitter connected to the ground through resistor Re and its collector connected to the emitter of Q1. 4. **Current Source:** - **I_{dc}:** Connected between \( V_{cc} \) and the output node \( V_o \).**Explanation of Connections:**- The input signal \( V_{in} \) is applied at the common node of R1 and R2.- The coupling capacitor C ensures that only the AC component of the input signal is passed to the base of Q2.- The voltage supply \( V_{cc} \) is connected to the collectors of both transistors via the respective nodes.**Objective:**The task is to draw the small signal model corresponding to this setup.**Small Signal Model Construction:**To construct the small signal model, follow these general steps:1. **Identify the AC equivalent circuit elements.** - Replace each transistor with its small signal equivalent (typically involving \( r_{\pi} \), \( g_m \), and \( r_o \)) - Replace capacitors with short circuits (assuming high-frequency response). - Replace DC voltage sources with

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Answered: Vin For the circuit shown, draw the…

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Vin For the circuit shown, draw the corresponding small signal model. Vcc Vcc Vcc W ww|ll R1 R2 WWW Q1 Q2 Re Idc Vo

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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### Transcription for Educational Website

---

**Title: Drawing the Small Signal Model for a Given Circuit**

**Introduction:**

In this tutorial, we will delve into the process of drawing the small signal model for the given circuit. This is a crucial step in analyzing and understanding the behavior of electronic circuits, especially in signal processing applications.

**Circuit Analysis:**

Let’s consider the circuit shown below where our primary goal is to draw the corresponding small signal model.

**[Image of Circuit Provided]**

**Components & Connections:**

The circuit comprises the following components:

1. **Resistors:**
- **R1:** Connected between the supply voltage \( V_{cc} \) and the input point.
- **R2:** Connected between the input point and the ground.
- **Re:** Connected between the emitter of transistor Q2 and the ground.

2. **Capacitor:**
- **C:** Connected between the input node (where \( V_{in} \) is applied) and the base of transistor Q2.

3. **Transistors (BJTs):**
- **Q1:** NPN transistor with its collector connected to \( V_{cc} \) and its emitter connected to the collector of Q2.
- **Q2:** NPN transistor with its emitter connected to the ground through resistor Re and its collector connected to the emitter of Q1.

4. **Current Source:**
- **I_{dc}:** Connected between \( V_{cc} \) and the output node \( V_o \).

**Explanation of Connections:**

- The input signal \( V_{in} \) is applied at the common node of R1 and R2.
- The coupling capacitor C ensures that only the AC component of the input signal is passed to the base of Q2.
- The voltage supply \( V_{cc} \) is connected to the collectors of both transistors via the respective nodes.

**Objective:**

The task is to draw the small signal model corresponding to this setup.

**Small Signal Model Construction:**

To construct the small signal model, follow these general steps:

1. **Identify the AC equivalent circuit elements.**
- Replace each transistor with its small signal equivalent (typically involving \( r_{\pi} \), \( g_m \), and \( r_o \))
- Replace capacitors with short circuits (assuming high-frequency response).
- Replace DC voltage sources with

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