30.1. Common Emitter Amplifier (Contd.)

Try these first

1. 1.

   What is the primary function of a common emitter amplifier?

   Hint

   Think about why amplifiers are used.

2. 2.

   What does the term 'quiescent point' refer to?

   Hint

   Consider what happens in the idle state of the circuit.

3. 3.

   What is the main purpose of a common emitter amplifier?

   • To operate as a switch
   • To amplify signals
   • To convert AC to DC

   Hint

   Think about the primary role of amplifiers.

4. 4.

   True or False: The quiescent point determines the maximum output swing in a common emitter amplifier.

   • True
   • False

   Hint

   Reflect on how changes in the quiescent point impact your signal.

5. 5.

   You need to design a common emitter amplifier with constraints of a maximum 20mW power dissipation and a goal of a 150 gain with a supply voltage of 10V. Establish the corresponding resistor values and justify their selection.

   Hint

   Use the formulas for power and gain calculation accordingly.

6. 6.

   Determine the effects of doubling the supply voltage on the voltage gain and output swing of a common emitter amplifier, given the original values.

   Hint

   Rethink all calculations and verify against other constraints.