46.6. Common Drain Amplifier Analysis

Try these first

1. 1.

   What is the voltage gain of a common drain amplifier approximately?

   Hint

   Recall that it commonly serves as a buffer.

2. 2.

   Why is high input resistance preferred in amplifiers?

   Hint

   Consider how it relates to preserving signal strength.

3. 3.

   What is the output voltage of a common drain amplifier approximately equal to?

   • Input Voltage
   • One-half of Input Voltage
   • Double the Input Voltage

   Hint

   Main function is signal integrity.

4. 4.

   True or False: A common drain amplifier has low input resistance.

   • True
   • False

   Hint

   Think about how input resistance affects loading.

5. 5.

   Design a common drain amplifier circuit, and calculate the input/output resistances and their effect on frequency response.

   Hint

   Incorporate reactance and resistance in the frequency response calculations.

6. 6.

   Evaluate how connecting a load resistance to the output affects the input output gain and overall performance.

   Hint

   Use previous knowledge of load impacts on amplifier functionality.