35.5.2. Gain and Phase Plot in Log Scale

Try these first

1. 1.

   What happens to the gain at low frequencies in amplifiers?

   Hint

   Consider how capacitors behave with varying frequency.

2. 2.

   Define a Bode plot.

   Hint

   Think about how we visualize data points.

3. 3.

   What is the purpose of a Bode plot?

   • To represent frequency response
   • To plot linear equations
   • To calculate impedance
   • To analyze digital signals

   Hint

   Remember what type of information Bode plots convey.

4. 4.

   True or False: The gain increases indefinitely with frequency.

   • True
   • False

   Hint

   Think about amplifier behavior over all frequency ranges.

5. 5.

   Given an amplifier with a maximum gain of 20 dB and a cutoff frequency of 1 kHz, calculate the gain at 500 Hz and 2 kHz.

   Hint

   Review how gain is impacted near the cutoff frequency.

6. 6.

   Explain how you would design a low-pass filter using a common emitter amplifier, detailing the necessary components and cutoff frequency.

   Hint

   How do resistors and capacitors interact to form filtering properties?