39.1.3. Bode Plot Sketch

Try these first

1. 1.

   What is a Bode plot?

   Hint

   Think about how output relates to input over varying frequencies.

2. 2.

   Define what a zero is in terms of Bode plots.

   Hint

   Consider what happens to gain at specific points in a plot.

3. 3.

   What does a Bode plot illustrate about a CE amplifier?

   • Input vs Output Voltage
   • Voltage Gain vs Frequency
   • Phase Shift vs Time

   Hint

   Think about what you measure with a Bode plot.

4. 4.

   True or False: A zero in a Bode plot increases the overall gain.

   • True
   • False

   Hint

   Recall how gain behaves at zeros.

5. 5.

   A CE amplifier has a pole at 1 kHz and a zero at 10 Hz. Describe how the gain changes across these frequencies and sketch a rough Bode plot.

   Hint

   Remember to identify the behavior before reaching the zero and after it, then relate how the pole reacts.

6. 6.

   How would the design of a practical CE amplifier differ if a larger capacitor is used? Assess its influence on the gain.

   Hint

   Consider the overall role of capacitance in determining circuit behavior.