57.3.10. Summary of Mixing Configurations

Try these first

1. 1.

   What configuration is known for high input impedance?

   Hint

   Think about where the output is taken from.

2. 2.

   What is the role of Beta (β) in a transistor?

   Hint

   Consider the relationship between collector and base currents.

3. 3.

   What defines the Beta (β) of a transistor?

   • The ratio of emitter current to collector current
   • The ratio of collector current to base current
   • The ratio of base current to emitter current

   Hint

   It's always the collector current over the base current.

4. 4.

   The Common Collector configuration is also known colloquially as what?

   • Emitter Follower
   • Base Follower
   • Collector Follower

   Hint

   Think about where the output is taken.

5. 5.

   Design a hypothetical circuit using a composite transistor in CC followed by CE configuration, and analyze how the gain changes depending on the β values of constituent transistors.

   Hint

   Recall the relationship between the output voltage and various input parameters.

6. 6.

   Propose an application for a Darlington pair in a circuit where high input impedance is crucial and outline potential challenges.

   Hint

   Think about high frequency signals and how they interact with additional capacitance.