53.2.4. Voltage Gain Calculation

Try these first

1. 1.

   What is the role of the coupling capacitor (C_B) in an amplifier circuit?

   Hint

   Think about how AC signals interact with DC.

2. 2.

   What happens to the voltage gain when C_B is removed?

   Hint

   Consider the involvement of voltage at the input and output.

3. 3.

   What is one major effect of removing C_B in an amplifier?

   • A) Increases gain
   • B) Decreases gain
   • C) No effect on gain

   Hint

   Think about the function of C_B in facilitating voltage.

4. 4.

   True or False: Removing C_B will increase the input resistance of the amplifier.

   • True
   • False

   Hint

   Reflect on how input resistance functions in the circuit.

5. 5.

   You have a common base amplifier with a known input voltage of 5V. If the gain with C_B connected is 108, what is the expected output voltage if C_B is disconnected?

   Hint

   Consider the effect of voltage gain when changing configuration.

6. 6.

   Design an equivalent circuit of a common base amplifier that minimizes loss without using C_B, describing your rationale.

   Hint

   Think about alternative methods of directing and managing signal flow.