67.2. Common Source Amplifier Comparison

Try these first

1. 1.

   What does feedback in amplifier design do?

   Hint

   Think of how this might stabilize or destabilize the operating point.

2. 2.

   What is the role of a bypass capacitor in an amplifier?

   Hint

   Consider what happens to the signal when it is grounded.

3. 3.

   What does negative feedback do in an amplifier?

   • Increases gain
   • Reduces distortion
   • Decreases gain

   Hint

   Consider its impact on stability versus amplification.

4. 4.

   True or False: A bypass capacitor helps maintain signal integrity.

   • True
   • False

   Hint

   Think about its role in grounding within the circuit.

5. 5.

   Given a common source amplifier with feedback resistance of 1kΩ and a gain of 10, discuss the effects if the bypass capacitor is omitted, predicting the new gain level.

   Hint

   Consider the feedback’s influence on output resistance.

6. 6.

   Design a common source amplifier circuit including both a feedback resistor and a bypass capacitor with set values. Calculate the expected voltage gain with the designed values.

   Hint

   Utilize the gain formulas discussed in class for your calculations.