41.2.1. Generalized Model of CE and CS Amplifier

Try these first

1. 1.

   What is the role of capacitors in amplifier circuits?

   Hint

   Think about AC coupling.

2. 2.

   Define input and output capacitance in the context of amplifiers.

   Hint

   Consider how signal passes through.

3. 3.

   What is the primary function of coupling capacitors in amplifiers?

   • To block AC signals
   • To allow AC signals
   • To amplify DC signals

   Hint

   Think about AC versus DC signal behavior.

4. 4.

   True or False: A pole in frequency response occurs where the output signal starts to rise indefinitely.

   • True
   • False

   Hint

   Consider what happens at critical frequencies.

5. 5.

   Given a CE amplifier with R = 2kΩ, C = 50nF, and a gain of 20, calculate the input capacitance and explain how it impacts frequency response.

   Hint

   Focus on the implications of high gain on normal component behavior.

6. 6.

   Discuss the significance of correctly placing poles in a feedback amplifier design, providing an example of how pole misplacement could affect performance.

   Hint

   Think about how performance metrics are tied to pole location.