55.4.2.3. Common Base (CB) Amplifier

Try these first

1. 1.

   What is the primary advantage of using a Common Base amplifier?

   Hint

   Consider the performance characteristics.

2. 2.

   How does input resistance affect the CB amplifier's use?

   Hint

   Think about impedance matching.

3. 3.

   What is the primary characteristic of the Common Base amplifier?

   • High input impedance
   • Low input impedance
   • High voltage gain

   Hint

   Think about how signal adequacy can be a challenge with different inputs.

4. 4.

   True or False: The voltage gain of a Common Base amplifier can exceed 1 under typical operating conditions.

   • True
   • False

   Hint

   Recall conditions affecting gain performance.

5. 5.

   Design a common base amplifier stage intended for a high-frequency switching application. What specific characteristics must you ensure?

   Hint

   Consider the trade-offs between gain and bandwidth.

6. 6.

   Analyze a circuit where a CB amplifier was incorporated with a CE stage. Discuss the advantages and potential pitfalls of this configuration.

   Hint

   Think about the interaction between input and output stages.