38.1.4. Circuit Analysis

Try these first

1. 1.

   What is the primary function of a common emitter amplifier?

   Hint

   Think about what these amplifiers are typically used for.

2. 2.

   Define cutoff frequency.

   Hint

   Refer to the effects on signal strength.

3. 3.

   What is the voltage gain of a common emitter amplifier?

   • Higher than the input
   • Lower than the input
   • Equal to the input

   Hint

   Think about what amplifiers do.

4. 4.

   True or False: Self-biasing utilizes external voltage to stabilize the amplifier.

   • True
   • False

   Hint

   Reflect on how self-biasing actually works.

5. 5.

   Design a common emitter amplifier given a specific overall gain of 50 and an upper cutoff frequency of 20 kHz. Provide all necessary resistor and capacitor values.

   Hint

   Think about the relationship between gain, capacitance, and resistive values.

6. 6.

   Given a circuit for a common emitter amplifier, analyze its frequency response and determine the mid-band gain. Explain step-by-step.

   Hint

   Get familiar with analyzing frequency responses systematically.