7.1. Analog Electronic Circuits

Try these first

1. 1.

   What is the primary function of a BJT in a circuit?

   Hint

   Think about signal amplification.

2. 2.

   In which bias condition does a BJT operate during amplification?

   Hint

   Consider how the base and collector terminals are connected.

3. 3.

   What is the primary function of a BJT?

   • Switching
   • Rectification
   • Amplification

   Hint

   Consider what we use BJTs for in circuits.

4. 4.

   True or False: The collector-base junction is forward biased for normal operation of a BJT.

   • True
   • False

   Hint

   Understand the biasing in the common configurations.

5. 5.

   Discuss the effect of varying the base-emitter voltage on the collector current and explain how it relates to the BJT's current gain.

   Hint

   Use the relationship I_C = βI_B.

6. 6.

   Analyze and explain what would happen to a BJT's performance if the base region were significantly narrowed. How would this affect the transistor's operation?

   Hint

   Consider the balance between current gain and potential instability.