International Journal of Computer Applications |
Foundation of Computer Science (FCS), NY, USA |
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, G. Raghu Poojita, J. Chaitanya Priya . Design of Active Electromagnetic Interference Filter to Eliminate Common-mode Noise in Conducted Interference. International Journal of Computer Applications. 43, 11 ( April 2012), 10-15. DOI=10.5120/6146-8518
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.