2.2. Tasks Performed by Analog Circuits

Try these first

1. 1.

   Define signal amplification.

   Hint

   Think about why we amplify a signal.

2. 2.

   What is a low-pass filter?

   Hint

   Consider what type of signals you want to keep.

3. 3.

   What is the primary task of an analog circuit?

   • Rectifying signals
   • Amplifying signals
   • Digitizing signals

   Hint

   Think about what happens to signals in analog processing.

4. 4.

   True or False: Analog circuits can only amplify low-frequency signals.

   • True
   • False

   Hint

   Consider the diversity of signals in real-world applications.

5. 5.

   A circuit has a gain of 15. If a signal of 2V is applied, compute the output. Then discuss how the change in input will affect output if the gain remains constant.

   Hint

   Apply the gain formula.

6. 6.

   Design an analog circuit that operates as a band-pass filter filtering out unwanted frequencies. Describe the components needed and how they interact.

   Hint

   Consider how different components affect different frequency ranges.