68.1.13. Comparison with Passive Load

Try these first

1. 1.

   What is an active load?

   Hint

   Think of the opposite of passive components.

2. 2.

   How does beta affect transistor performance?

   Hint

   It's a multiplication factor!

3. 3.

   What is the primary benefit of using an active load in an amplifier?

   • Lowering voltage
   • Increasing voltage gain
   • Decreasing resistance

   Hint

   Think about what active components do compared to passive.

4. 4.

   Early voltage affects what aspect of transistor performance?

   • True
   • False

   Hint

   Consider its impact on current flow.

5. 5.

   Design a common emitter amplifier circuit that operates optimally under given parameters: a 12V supply voltage and a target voltage gain of 300.

   Hint

   Focus on balancing collector currents and selecting suitable transistor beta values.

6. 6.

   Given two transistor amplifiers, one with an active load yielding a gain of 1500 and a bandwidth of 50kHz and another with a passive load having a gain of 200 and a bandwidth of 300kHz, compute the gain-bandwidth products and analyze their significance.

   Hint

   Remember that the gain-bandwidth product often remains constant for amplifiers regardless of load type.