53.2. Examples and Analysis

Try these first

1. 1.

   What is the primary role of a coupling capacitor in an amplifier circuit?

   Hint

   Consider the purpose of connecting AC and DC components.

2. 2.

   Describe how removing a coupling capacitor affects the voltage gain.

   Hint

   Think about how the signal's accessibility to the amplifier changes.

3. 3.

   What happens to the output voltage when a coupling capacitor is removed?

   • Increases
   • Decreases
   • No Change

   Hint

   Consider what the capacitor contributes to the circuit.

4. 4.

   True or False: The input resistance increases when the coupling capacitor is absent.

   • True
   • False

   Hint

   Think about how circuit grounding functions.

5. 5.

   Design and simulate a circuit schematic for a common base amplifier under different configurations with and without a coupling capacitor. Calculate the expected performance metrics.

   Hint

   Refer to the equations used in class.

6. 6.

   Analyze the effects of varying emitter current in a common base amplifier with a missing coupling capacitor. What experimental results might you expect?

   Hint

   Examine previous calculations for reference.