Wednesday, May 13, 2015

4-28: Series RLC Circuit Step Response

Series RLC Circuit Step Response

Pre-Lab: Based on the characteristic equation, we can figure out the natural response of the RLC circuit. Alpha is defined as R/2L, and omega is defined as square root of 1/LC. The circuit is overdamped when alpha > omega, critically damped when alpha = omega, and underdamped when a < omega.

Theoretical value for the w, wd  is much clossed to the experiment value, but a has big error. 


This is the resulting output graph from the capacitor: We experimental alpha is 1.5*10^6, which is about172% of our theoretical alpha value of 550000. Possible source of error is from our input variables, the way we measured the circuit.


Summary: In this lab, we went over the basic principles of series RLC circuit, and did a lab to see how this type of circuit works when critically damped.

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