15.1.1. Analysis of Simple Non-Linear Circuits Containing a BJT (Contd.)

Try these first

1. 1.

   What is the function of the base current in a BJT?

   Hint

   Think about the role of input versus output in amplification.

2. 2.

   How does increasing input voltage affect the collector current?

   Hint

   Consider the relationship between input and output.

3. 3.

   What is the role of the base current in controlling collector current?

   • It has no effect
   • It is multiplied by beta
   • It decreases collector current

   Hint

   Think about the transistor operation principle.

4. 4.

   True or False: The Q-point should be kept at the extremes of the operating curve for best performance.

   • True
   • False

   Hint

   Consider where effective amplification occurs.

5. 5.

   Given a circuit with a BJT, where R(C) = 2kΩ, β = 100, and V(in) = 1V. Calculate the output voltage if V(BE(on)) = 0.6V and V(CC) = 10V.

   Hint

   Start by calculating the base current.

6. 6.

   Discuss the implications of running a BJT operation at the extremes of its input-output characteristic curve. What challenges may arise?

   Hint

   Consider the linear and saturation regions.