67.2.1. Design Considerations for Common Source Amplifier

Try these first

1. 1.

   What does negative feedback do in amplifiers?

   Hint

   Think about how feedback might counteract a change in input.

2. 2.

   What is the purpose of a bypass capacitor?

   Hint

   Consider what happens to the signal at the transistor's base.

3. 3.

   What is the effect of negative feedback on gain?

   • It increases gain
   • It stabilizes gain
   • It decreases gain

   Hint

   Consider how feedback counters signal changes to stabilize performance.

4. 4.

   True or False: A bypass capacitor can lower output resistance.

   • True
   • False

   Hint

   Think about the capacitor's role in the circuit overall.

5. 5.

   Devise a design for a common source amplifier that incorporates feedback and bypass capacitors. Explain each component's role.

   Hint

   Map out the roles of each component in the context of feedback and gain.

6. 6.

   Evaluate how changes to both resistor R and bypass capacitor affect the amplifier's output voltage in a series of scenarios.

   Hint

   Think about how each component interrelates in the circuit's performance.