47.3. Common Collector Amplifier Example

Try these first

1. 1.

   What is a common collector amplifier?

   Hint

   What properties does it have related to its input and output?

2. 2.

   Explain why high input impedance is important.

   Hint

   Consider the effects of loading on circuit performance.

3. 3.

   What is the primary function of a common collector amplifier?

   • To amplify voltage
   • To buffer
   • To oscillate

   Hint

   Think about what type of amplification this configuration is typically used for.

4. 4.

   True or False: The voltage gain of a common collector amplifier is expected to be much greater than 1.

   • True
   • False

   Hint

   Consider the design intent of this amplifier stage.

5. 5.

   If the input capacitance is increased in a common collector amplifier, what effect will it have on the upper cutoff frequency? Provide calculations based on given capacitance values.

   Hint

   Consider the relationship between capacitance and frequency response.

6. 6.

   Given a load capacitance of 100pF, calculate the new upper cutoff frequency using the output resistance calculated earlier (approximately 52Ω).

   Hint

   Use the standard formula for cutoff frequency and plug in the resistance and capacitance.