/challenges-projects/design-challenges/experimenting-with-magnetic-components/b/blog/posts/experiment-with-magnetic-component---blog-4-dealing-with-preliminary-problemPreliminary problem with the mobile charger :-Most mobile phone charger doesn’t comes with EMI filter attached at the primary side of the SMPS of the charger. So this charger passes conduction EMI noise to the secondary side or to the output of the cen-USTelligent Community 12