53.3. Design Guidelines

Try these first

1. 1.

   What is a coupling capacitor used for in amplifier design?

   Hint

   Think about its role with AC signals.

2. 2.

   What is output impedance?

   Hint

   It relates to how the amplifier delivers power.

3. 3.

   What happens to the voltage gain if a capacitor is removed from a common base amplifier circuit?

   • It increases
   • It decreases
   • It remains the same

   Hint

   Think about signal integrity.

4. 4.

   True or False: The input resistance of an amplifier typically increases when a coupling capacitor is removed.

   • True
   • False

   Hint

   Recall the principles of voltage division.

5. 5.

   Design a common base amplifier circuit with a specified voltage gain of 10. Given component limitations, derive a suitable resistor configuration.

   Hint

   Consider resistor configurations that maintain desired impedance levels.

6. 6.

   Calculate the effect on output impedance if the input resistance is increased by an external factor of 5 due to circuit modifications.

   Hint

   Think about the relationships between gain, resistance, and their interactions.