54.1. Common Base and Common Gate Amplifiers (Contd.): Numerical Examples (Part D)

Try these first

1. 1.

   What is the primary voltage swing achievable in a common gate amplifier if the supply voltage is 12V?

   Hint

   Consider the relationship between supply voltage and output swing limits.

2. 2.

   Define the output swing in the context of an amplifier.

   Hint

   Think about how the minimized and maximized values are set by the supply voltage.

3. 3.

   What is the output voltage swing limitation of a common gate amplifier connected to a 12 V source?

   • ±12 V
   • ±6 V
   • ±4 V

   Hint

   Think about the power supply constraints.

4. 4.

   True or False: The input impedance of an amplifier does not affect the performance of the preceding circuit.

   • True
   • False

   Hint

   Consider the impact of current draw on neighboring circuits.

5. 5.

   Design a circuit that satisfies a ±4 V output swing but also requires a voltage gain of 10. Propose resistor choices and justification.

   Hint

   Start from basic gain formulas in small signal analysis.

6. 6.

   Examine the effects of feedback on a common base amplifier and how it alters current gain. Provide a theoretical approach to support your argument.

   Hint

   Think about how feedback enhances or diminishes signal integrity.