52.2.1. Example of Common Base Circuit

Try these first

1. 1.

   What is the purpose of a common base amplifier?

   Hint

   Consider the types of configurations.

2. 2.

   Define Thevenin's theorem in simple terms.

   Hint

   Think about how you would measure voltage.

3. 3.

   What is the input impedance of a common base amplifier generally considered?

   • High
   • Low
   • Medium

   Hint

   Think about its applications.

4. 4.

   True or False: The common base amplifier configuration is used primarily for voltage amplification.

   • True
   • False

   Hint

   Consider the roles of different amplifier types.

5. 5.

   Design a common base amplifier circuit to amplify a 1 mA current input signal. Calculate the appropriate resistor values needed and the expected current gain if β is 100.

   Hint

   Calculate I_B using V_th to ensure correct biasing.

6. 6.

   Given a common base amplifier with a collector resistor of 4 kΩ, calculate the maximum output voltage swing if the power supply is 12 V and ensure it operates without distortion.

   Hint

   Consider V_C and saturation limits when determining swing.