Chapter 15

EMI Standards and Measurements

This chapter discusses typical applicable standards for electromagnetic interference (EMI) compliance, basic measurement techniques and diagnostic tools. It details the mandatory limits for conducted and radiated EMI as per CISPR-22 and FCC (Federal Communications Commission) Part 15. Peak, quasi-peak, and average limits are explained. Common mode and differential mode noise concepts are introduced. The Line Impedance Stabilization Network (LISN) is described. Ways to separate common mode and differential mode components for diagnostic purposes are also presented.

Part 1: Overview and Limits

Sooner or later, every power supply designer finds out the hard way that if anything has the potential to cause ...

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