25.4. Summary of the Session

Try these first

1. 1.

   What happens to the DC voltage during small signal analysis?

   Hint

   Think about focusing only on AC signals.

2. 2.

   Identify one role of transconductance in amplifiers.

   Hint

   Recall what influences the current flow.

3. 3.

   What is set to zero during small signal analysis in a CE amplifier?

   • AC voltage
   • DC voltage
   • Collector current

   Hint

   Think about the components involved in small signal analysis.

4. 4.

   Beta sensitivity affects which part of the CE amplifier operation?

   • True
   • False

   Hint

   Consider what happens when you change a component.

5. 5.

   If a CE amplifier has a beta of 100 and the input resistance rπ is 1kΩ, how would you calculate the output voltage if the input signal is 1V and Rc is 10kΩ?

   Hint

   Remember to break down the variables properly.

6. 6.

   Explain in detail the role of parasitic capacitances at high frequencies in a CE amplifier, including how it affects the overall amplifier behavior.

   Hint

   Evaluate the frequency response of the circuit.