66.2.6. Numerical Examples and Design Guidelines

Try these first

1. 1.

   What is an active load in an amplifier?

   Hint

   Think about how loads can be represented in electronic circuits.

2. 2.

   Name one advantage of a common emitter amplifier.

   Hint

   Recall the input-output relationship.

3. 3.

   What is the benefit of using active load instead of passive load?

   • A) Reduces power consumption
   • B) Increases voltage gain
   • C) Easy to implement

   Hint

   Consider how the load influences gain characteristics.

4. 4.

   True or False: The common source amplifier typically achieves lower voltage gain than the common emitter amplifier.

   • True
   • False

   Hint

   Think about the comparative gains discussed.

5. 5.

   Given a common emitter amplifier, calculate the potential voltage gain if the transconductance is 20 mA/V and the load resistance is 1 kΩ.

   Hint

   Remember the formula for voltage gain.

6. 6.

   How would substituting a passive load with an active load affect the thermal stability of the circuit?

   Hint

   Think about feedback and control in your answer.