52.2.5. Current Gain of Common Base Amplifier

Try these first

1. 1.

   What is the primary characteristic of the common base amplifier?

   Hint

   Think about how it interacts with the source.

2. 2.

   What is the typical current gain of a common base amplifier?

   Hint

   Consider how input and output currents relate.

3. 3.

   What is the expected current gain of a common base amplifier?

   • 0.5
   • 1
   • 2
   • 0.1

   Hint

   Think about the relationship between input and output current.

4. 4.

   True or False: The common base amplifier has a high input impedance.

   • True
   • False

   Hint

   Remember the characteristics of a common base amplifier.

5. 5.

   Given a common base amplifier with an input current of 10 µA, calculate the collector current if the beta (β) is 150.

   Hint

   Use the current gain relation in your calculation.

6. 6.

   Design a common base amplifier circuit using a transistor with a given β and a desired output swing limit. Explain your approach.

   Hint

   Focus on the bias voltage and how it influences output limits.