Question

Learning Goal: To analyze and design a passive, first-order low-pass filter using a series RL circuit. The analysis and design will be repeated for a series RC circuit. An electrocardiogram needs to detect periodic signals of approximately 1 Hz (since the resting heart rate of a healthy adult is between 55 and 70 beats per minute). The instrument operates in an electrical environment that is very noisy with a frequency of 60 Hz. It is desirable to have a low-pass filter that will block any noise above 16 Hz. A low-pass RL filter can be built using available 50 H inductors, a low-pass RC filter can be built using available 1.4 pF capacitors, resistors of any necessary value are also available.

Answer 1

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