52.1.2. Department of Electronics and Electrical Communication Engineering

Try these first

1. 1.

   Define the common base amplifier.

   Hint

   Think about the structure of the amplifier.

2. 2.

   What is biasing?

   Hint

   Consider what it means to control the function of a transistor.

3. 3.

   What is the primary function of a common base amplifier?

   • Voltage Gain
   • Current Amplification
   • Signal Attenuation

   Hint

   Consider what the amplifier enhances depending on its configuration.

4. 4.

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

   • True
   • False

   Hint

   Think about its configuration and how signals enter.

5. 5.

   Design a common base amplifier circuit with specific parameters. Given a supply voltage of 10V, design biasing that will ensure the collector current is around 5mA.

   Hint

   Ensure you factor in β for BJT while calculating currents.

6. 6.

   Evaluate the output swing for a common gate amplifier where the drain voltage is 15V, and the minimum output voltage acceptable is 4V.

   Hint

   Clarify what factors contribute to the upper limit of the swing.