43.5. Cascading in Common Source Amplifiers

Try these first

1. 1.

   What happens to the gain when two amplifiers are cascaded?

   Hint

   Think about what happens when an output connects to an input.

2. 2.

   Define a buffer in the context of amplifiers.

   Hint

   Consider its role in managing signals.

3. 3.

   What is the impact of loading effects when cascading amplifiers?

   • Increase in gain
   • Decrease in gain
   • No effect
   • Increase in cutoff frequency

   Hint

   Remember the voltage division concept.

4. 4.

   Is it beneficial to use buffers between amplifiers?

   • True
   • False

   Hint

   Think about how isolation can help signal transfer.

5. 5.

   Design a two-stage amplifier with specified gains of 15 and 10. Calculate the expected overall gain considering potential loading effect.

   Hint

   Apply the concept of voltage division and loading.

6. 6.

   In a cascaded amplifier circuit, derive the expressions for both lower and upper cutoff frequencies based on given component values.

   Hint

   Factor in how loading affects frequency responses.