39.1.7. Numerical Examples for CE and CS Amplifiers

Try these first

1. 1.

   What does the term cutoff frequency refer to?

   Hint

   Think about where gain starts to fall off in an amplifier.

2. 2.

   What is a Common Emitter amplifier?

   Hint

   Remember that this is a popular amplifier type for low frequency.

3. 3.

   What does an increase in capacitor value in an amplifier circuit generally lead to?

   • Higher cutoff frequency
   • Lower cutoff frequency
   • No effect

   Hint

   Think about the influence of capacitance in an RC network.

4. 4.

   True or False: The frequency response of an amplifier shows how its gain varies with frequency.

   • True
   • False

   Hint

   Recall the Bode plot discussion.

5. 5.

   Design a common source amplifier with specified parameters. Discuss your choices for resistance and capacitance values based on desired frequency response.

   Hint

   Use the formulas for gain and cutoff frequency to guide your design choices.

6. 6.

   Assuming you have a CE amplifier with varying resistor values, explain how each configuration affects the frequency response observed in a Bode plot.

   Hint

   Consider the relationship between resistance values and their impact on the time constants involved.