18.1.1. Introduction

Try these first

1. 1.

   What is the purpose of linearization in electronic circuits?

   Hint

   Think about why we deal with complex systems.

2. 2.

   Define what a Q-point is.

   Hint

   It is often referred to as the operating point.

3. 3.

   What is the effect of linearization on circuit analysis?

   • It adds complexity
   • It simplifies analysis
   • It has no effect

   Hint

   Consider why engineers need to simplify models.

4. 4.

   True or False: The Q-point represents the only operating condition of the circuit.

   • True
   • False

   Hint

   Explore the concept of varying inputs and states.

5. 5.

   Given a BJT circuit with specified input-output characteristics, derive the small signal model and determine the output for small input variations.

   Hint

   Focus on the linearization methods discussed.

6. 6.

   Evaluate how a change in the Q-point affects the overall gain of a BJT amplifier circuit. Provide a mathematical representation.

   Hint

   Remember to consider increments around the operating point.