49.1.1. Introduction to Common Base and Common Gate Amplifiers

Try these first

1. 1.

   What is the primary function of a common base amplifier?

   Hint

   Think about the role of common base in signal strength.

2. 2.

   How does biasing affect an amplifier's operation?

   Hint

   What happens if a transistor is not biased correctly?

3. 3.

   What type of amplifier configuration is a common base amplifier?

   • Common collector
   • Common base
   • Common emitter

   Hint

   Recall the different configurations we discussed.

4. 4.

   True or False: The output signal of a common gate amplifier is in phase with the input signal.

   • True
   • False

   Hint

   Think about how the signal behaves in different amplifier configurations.

5. 5.

   Given a common base amplifier circuit, calculate its voltage gain and discuss how changes in biasing affect the gain.

   Hint

   Remember to analyze how the input and output impedances play a role.

6. 6.

   Design a common gate amplifier circuit aimed for high-speed applications. Mention key considerations.

   Hint

   What would be critical for maintaining speed in a MOSFET application?