60.1.4. Input Capacitance Analysis

Try these first

1. 1.

   What role does the CC stage play in a CC-CE configuration?

   Hint

   Think about how one amplifier configuration can support another.

2. 2.

   Define input capacitance.

   Hint

   Consider the effect it has on signal flow.

3. 3.

   What does a common collector stage primarily provide?

   • High output power
   • High input resistance
   • Low capacitance

   Hint

   Think about the configuration's function regarding input power.

4. 4.

   Is it true that the Darlington pair can increase overall gain?

   • True
   • False

   Hint

   Consider the multiplication of gain through connection.

5. 5.

   Given a CC-CE configuration with β for both transistors at 150, calculate the required base current for an emitter current of 2 mA in the CE stage.

   Hint

   Use the relationship of base to emitter current to find your answer.

6. 6.

   Analyze the performance of an amplifier circuit incorporating a Darlington pair, focusing on input capacitance compared to a single transistor configuration.

   Hint

   Consider how feedback impacts capacitive characteristics.