ece209lab5

# ece209lab5 - LAB 4 Step Response of Second Order Circuits...

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LAB 4 Step Response of Second Order Circuits Students Name: Adit Joshi Nick Novello Date : 05/04/10 Course Name : ECE 209 TA Name : Bo Ji

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Introduction: This lab investigates the step response of passive and active second order low pass filters. The main objectives were: Test the step response of Passive Second Order Low Pass Filter Test the step response of Active Second Order Low Pass Filter Procedure: Refer to pages 45-46 of ECE 209 Course Packet
Data: 1) Passive Second Order Low Pass Filter The transfer function for the circuit of a Passive Second Order Low Pass Filter was derived. V o (t) = 1/Cs V in (t) [Voltage Divider] ----------------------- R L +R+Ls+1/Cs H(s) = V o (t)/V in (t) = 1 -------------------------- C (Ls 2 +Rs+R L s)+1 The step response for the above transfer function was plotted for the 3 cases: Under damped C= 0.01μF R=560Ω R L =440 Ω L=0.5H Critically damped C= 0.01μF R=10kΩ Over damped C= 0.02μF R=18kΩ The input and output waveforms for the 3 cases are on a graph sheet in the Appendix.

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The frequency response for the 3 cases is as follows:
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## This note was uploaded on 12/07/2011 for the course ECE 209 taught by Professor Staff during the Spring '08 term at Ohio State.

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ece209lab5 - LAB 4 Step Response of Second Order Circuits...

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