15.1. Analog Electronic Circuits

Try these first

1. 1.

   What does BJT stand for?

   Hint

   Think about the types of charge carriers involved.

2. 2.

   In a common emitter configuration, which terminal is common?

   Hint

   Consider the naming of the configuration.

3. 3.

   What is the primary function of a BJT in a circuit?

   • Voltage regulation
   • Amplification
   • Switching

   Hint

   Think about the main reason you might use a BJT in audio applications.

4. 4.

   True or False: The collector current in a common emitter configuration is directly proportional to the base current.

   • True
   • False

   Hint

   Recall the relationship between base and collector currents.

5. 5.

   Derive the output voltage in a common emitter circuit if V_CC is 10V, R_C is 1kΩ, and the collector current is 5mA.

   Hint

   Apply Ohm's law for the voltage drop across the collector resistor.

6. 6.

   If a BJT is operating at its limit, what design considerations should be accounted for to avoid saturation?

   Hint

   Consider the power ratings and input signal levels.