51.2.3. Analysis for Common Gate Amplifier

Try these first

1. 1.

   What is the common base amplifier configuration?

   Hint

   Think about which terminals are used for input and output.

2. 2.

   Define voltage gain in the context of amplifiers.

   Hint

   It's a measure of how much the signal is amplified.

3. 3.

   What is the primary function of a common base amplifier?

   • To amplify current
   • To amplify voltage
   • To buffer a signal

   Hint

   Consider the goals of different amplifier configurations.

4. 4.

   True or False: The input impedance of a common base amplifier is typically high.

   • True
   • False

   Hint

   Recall the common characteristics of input impedances in amplifier circuits.

5. 5.

   You are tasked with designing a common-base amplifier to amplify a weak audio signal with a specific source impedance of 1 kΩ. Discuss the implications and adjustments that must be made for optimum performance.

   Hint

   Reflect on how impedance and gain interact.

6. 6.

   If a common base amplifier has a specified gain of 50 and an input resistance of 20Ω, calculate how much voltage appears across the output if the input signal is 0.1V.

   Hint

   Utilize the gain formula in your calculations.