14.1.1. Lecture – 14

Try these first

1. 1.

   Define a BJT.

   Hint

   Think about what type of charge carriers are involved.

2. 2.

   What is the main use of the common emitter configuration?

   Hint

   What do we generally need to improve in electronic signals?

3. 3.

   What is the collector current (I_C) dependent on in a BJT?

   • Base Current (I_B)
   • Emitter Voltage (E)
   • Supply Voltage (V_CC)

   Hint

   Focus on the factor that amplifies the current.

4. 4.

   True or False: The common emitter configuration is primarily used for switching applications.

   • True
   • False

   Hint

   What is the main function of this configuration?

5. 5.

   Design a common emitter circuit for a specified input signal, and calculate the necessary biasing conditions to achieve a defined output.

   Hint

   Start with the basic design parameters and adjust for the required output.

6. 6.

   Analyze a non-linear circuit where a capacitor is added at the collector. Discuss the effects on V_CE at different frequencies.

   Hint

   Consider the frequency response characteristics of BJTs.