9.1.1. Lecture - 09

Try these first

1. 1.

   What does BJT stand for?

   Hint

   Think about the types of charge carriers involved.

2. 2.

   Explain what current gain (β) represents.

   Hint

   It quantifies the amplifier's performance.

3. 3.

   What does the symbol 'β' represent in BJT circuits?

   • Voltage Gain
   • Current Gain
   • Power Gain

   Hint

   It shows how effective the transistor is at amplifying.

4. 4.

   True or False: The I-V characteristics of BJTs are linear.

   • True
   • False

   Hint

   Think about how diodes behave.

5. 5.

   Calculate the collector current (IC) for a BJT with a β of 150 and a base current (IB) of 20µA. Then, discuss what this tells us about circuit design.

   Hint

   Apply the formula carefully and consider implications on the circuit.

6. 6.

   Discuss how the operating point affects the performance of a BJT in a circuit. Illustrate this with a diagram.

   Hint

   Consider different operating regions and their effect on amplification.