14.1.6. Example Circuit Analysis

Try these first

1. 1.

   What is the basic role of a BJT in a common emitter configuration?

   Hint

   Consider what the BJT does with the input signal.

2. 2.

   State the relationship between the collector current and base current in a BJT.

   Hint

   Remember the relationship: I_C = β * I_B.

3. 3.

   What happens to the collector current in a BJT as the base-emitter voltage increases?

   • Increases rapidly
   • Decreases gradually
   • Remains constant

   Hint

   Think about how the base-emitter junction operates.

4. 4.

   True or False: A common emitter configuration is most often used for high-power applications.

   • True
   • False

   Hint

   Recall the primary purpose of common emitter setups.

5. 5.

   Calculate the collector current if the base current is 20 µA and β is 100.

   Hint

   Use the relationship between collector and base current.

6. 6.

   How would you adjust the circuit if the voltage drop across a biased resistor in the base is affecting the operating point?

   Hint

   Reassess the values and account for any shifts caused by the resistor.