31.1.5. Example Calculations

Try these first

1. 1.

   What is the maximum gain of a typical Common Emitter amplifier?

   Hint

   Think about the theoretical limits of amplifier gains discussed.

2. 2.

   What role does a bypass capacitor play in amplifier circuits?

   Hint

   Consider its function in maintaining the bias point.

3. 3.

   What is the maximum theoretical gain of a Common Emitter amplifier?

   • 100
   • 230
   • 400

   Hint

   Recall the figures discussed in class.

4. 4.

   True or False: Cascading amplifiers always increases the total gain.

   • True
   • False

   Hint

   Remember our discussion on loading effects.

5. 5.

   Design a CE amplifier that achieves a gain of 100 while ensuring its bias point remains stable against varying β. Provide calculations for the necessary resistor values.

   Hint

   Utilize voltage gain formulas and consider practical circuit thermodynamics.

6. 6.

   Given an existing amplifier that provides a maximum input signal of 1V, design a cascaded system of two CE amplifiers to achieve an overall maximum gain of 500 while considering the loading effects.

   Hint

   Revisit loading effects influencing performance as signal passes from one stage to another.