14.2.3. Piecewise Linear Diode Model

Try these first

1. 1.

   What does BJT stand for?

   Hint

   Think about the type of transistor.

2. 2.

   Explain the significance of V_BE(on).

   Hint

   Consider the forward bias condition.

3. 3.

   What is the relationship between the collector current (IC) and base current (IB) in a BJT?

   • IC = β × IB
   • IC + IB = β
   • IC - IB = β

   Hint

   Think of the current gain concept!

4. 4.

   True or False: The piecewise linear model complicates the analysis of diodes.

   • True
   • False

   Hint

   How does it impact calculations?

5. 5.

   Given a BJT with β = 120 and IB = 2 mA, if a load resistor of 1 kΩ is connected to the collector, calculate the operating point both theoretically and using numerical methods.

   Hint

   Start with finding IC then use Ohm's law for the voltage.

6. 6.

   A BJT shows unpredictable output currents under varying input conditions; analyze what might be wrong with the biasing configuration.

   Hint

   Think about what happens if V_BE is too low.