35.4. C-R Circuit Analysis

Try these first

1. 1.

   What is frequency response in electrical circuits?

   Hint

   Think about how amplifiers react to different signals.

2. 2.

   Define cutoff frequency.

   Hint

   What happens to signals below or above this frequency?

3. 3.

   What happens to the gain of an amplifier when the frequency increases past the cutoff frequency?

   • Gain increases
   • Gain decreases
   • Gain remains constant

   Hint

   Think about how different frequencies affect circuit output.

4. 4.

   True or False: A Bode plot displays both gain and phase shift as functions of frequency.

   • True
   • False

   Hint

   What dual characteristics does this plot convey?

5. 5.

   You are designing a CE amplifier with a necessary cutoff frequency of 1 kHz. Given the relationship between R and C, determine suitable values for R if C = 10μF.

   Hint

   Rearrange the formula to isolate R.

6. 6.

   A CS amplifier exhibits a phase shift of -90° at very low frequencies and approaches 0° at high frequencies. Analyze how this behavior impacts signal processing.

   Hint

   Consider how shifts can combine or interfere with signals.