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Design of Active Electromagnetic Interference Filter to Eliminate Common-mode Noise in Conducted Interference

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International Journal of Computer Applications
© 2012 by IJCA Journal
Volume 43 - Number 11
Year of Publication: 2012
Authors:
P. V. Y. Jayasree
G. Raghu Poojita
J. Chaitanya Priya
10.5120/6146-8518

P V Y Jayasree, Raghu G Poojita and Chaitanya J Priya. Article: Design of Active Electromagnetic Interference Filter to Eliminate Common-mode Noise in Conducted Interference. International Journal of Computer Applications 43(11):10-15, April 2012. Full text available. BibTeX

@article{key:article,
	author = {P. V. Y. Jayasree and G. Raghu Poojita and J. Chaitanya Priya},
	title = {Article: Design of Active Electromagnetic Interference Filter to Eliminate Common-mode Noise in Conducted Interference},
	journal = {International Journal of Computer Applications},
	year = {2012},
	volume = {43},
	number = {11},
	pages = {10-15},
	month = {April},
	note = {Full text available}
}

Abstract

Passive Electromagnetic Interference (EMI) filters are being replaced with active EMI filters these days for dealing with high-frequency noise interference. Based on the measured values of noise source and noise termination impedances of equipment under test, a practical example of the design of an EMI filter to comply with the regulatory limits of conducted EMI is demonstrated. The elimination of Common-mode (CM) noise considering the design of both passive and active EMI filters is exhibited in the frequency range of 150 KHz-1MHz and although both of these filters allow the SMPS to pass the EMI limits, designing active EMI filters leads to optimal component values and eliminates CM noise over a wider frequency range.

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