35.5.1. Understanding Bode Plot

Try these first

1. 1.

   What does a Bode plot represent?

   Hint

   Think about how we compare input and output.

2. 2.

   What is the cutoff frequency?

   Hint

   Look for the -3 dB point on the magnitude plot.

3. 3.

   What does a Bode plot show in terms of circuit response?

   • Gain and Frequency
   • Gain and Phase
   • Frequency and Resistance

   Hint

   Remember the two main aspects we focus on in frequency response.

4. 4.

   Is the cutoff frequency where the output magnitude starts dropping significantly?

   • True
   • False

   Hint

   Think about how we measure gain in circuits.

5. 5.

   Calculate the cutoff frequency for an RC circuit with R = 1kΩ and C = 100nF.

   Hint

   What do you need to remember about R and C?

6. 6.

   Examine the effects of changing the resistor value in a low-pass RC filter on the cutoff frequency and explain the outcome on the frequency response curve.

   Hint

   How do you think changing R affects the behavior of signals at various frequencies?