18.1. Linearization of Non – Linear Circuit Containing BJT

Try these first

1. 1.

   What is the operating point in a circuit?

   Hint

   Think about the steady conditions of the circuit!

2. 2.

   Why is linearization important?

   Hint

   Recall that it makes computations easier!

3. 3.

   What do we refer to when we talk about the operating point?

   Hint

   Think of it as the point of operation for circuit functions!

4. 4.

   True or false: Linearization can be applied to any range of input in a circuit.

   • True
   • False

   Hint

   Remember the restrictions on small signal analysis!

5. 5.

   Derive the small signal equivalent circuit of a given BJT amplifier, assuming practical values for DC voltage and resistances.

   Hint

   Don't forget to consider voltage-dependent currents and small signals around the Q-point.

6. 6.

   Analyze how varying the input voltage slightly changes the output voltage in a given BJT circuit using small signal analysis.

   Hint

   You may need to express both outputs in terms of small signal variations to observe the effect.