44.3.2. Next Steps in Learning

Try these first

1. 1.

   What is the role of output resistance in an amplifier?

   Hint

   Consider current delivery and voltage drop.

2. 2.

   What value does the voltage gain approach in a common collector amplifier?

   Hint

   Think about buffer characteristics.

3. 3.

   What is the typical voltage gain for a common collector amplifier?

   • 0.5
   • 1
   • 2
   • 3

   Hint

   Recall the application's intent as a buffer.

4. 4.

   True or False: The input capacitance in a common collector amplifier is generally high.

   • True
   • False

   Hint

   Consider its role in signal fidelity.

5. 5.

   You have a common collector amplifier with an output resistance of 180 ohms. If it services a load resistance of 60 ohms, what form of voltage drop would you observe? Provide your calculations.

   Hint

   Set up the voltage divider proportionally.

6. 6.

   If the input capacitance in a common collector amplifier is 3nF and the voltage gain is found to be 0.9, how does this influence the effective input capacitance seen by the source?

   Hint

   Apply Miller’s theorem appropriately.