66.1.1. Lecture – 66

Try these first

1. 1.

   What is the main advantage of using an active load in amplifiers?

   Hint

   Think about the function of the load in amplifying circuits.

2. 2.

   Define common emitter amplifier.

   Hint

   Consider where the emitter connects in the circuit.

3. 3.

   What is an active load?

   • A type of passive component
   • A transistor in an amplifier
   • A resistor only

   Hint

   Think about how active components differ from passive ones.

4. 4.

   True or False: Common source amplifiers can achieve higher gains compared to common emitter amplifiers.

   • True
   • False

   Hint

   Refer back to their typical performance in circuits.

5. 5.

   Design an active load circuit for a common emitter amplifier that increases its gain from 100 to 150. What would be the necessary specifications for the active load?

   Hint

   Assess the transformation needed in the I-V characteristics to achieve the gain.

6. 6.

   If increasing Vcc to 18V led to a power dissipation of 12W in an active load configuration, what measures can be taken to ensure effective thermal management?

   Hint

   Consider the relationship between power, voltage, and current.