38.1.9. Overall Frequency Response

Try these first

1. 1.

   What does a self-biased configuration do in a common emitter amplifier?

   Hint

   Think about feedback mechanisms in circuit design.

2. 2.

   What is the purpose of coupling capacitors in amplifiers?

   Hint

   Focus on the role of each capacitor in the signal path.

3. 3.

   What is the primary role of the emitter resistor in a self-biased CE amplifier?

   • To decrease voltage gain
   • To stabilize the operating point
   • To increase output power

   Hint

   Think about how resistors can impact stability in circuits.

4. 4.

   True or False: Bypass capacitors have no effect on AC signals in a CE amplifier.

   • True
   • False

   Hint

   Consider how each component interacts with signals.

5. 5.

   Design a self-biased common emitter amplifier that has a lower cutoff frequency of 15 Hz and an upper cutoff frequency of 30 kHz. Provide calculations for each component.

   Hint

   Start with one frequency at a time and remember the formulas for R and C.

6. 6.

   Given a common emitter amplifier configuration, analyze the effects of varying the emitter resistor on the voltage gain and overall frequency response.

   Hint

   Consider feedback principles while altering the emitter resistor.