2008•Electronic Product Reliability and Environmental TestingRequires access

Discussion on the Design of EMI Source Filter

Yanhua Wu

Abstract

Power supply EMI filter is one of the effective means available to restrain conductive emission and radiative emission. The types of interferences in power supply line and the basic principle and major characteristics of power supply electromagnetic interference ( EMI) were analyzed. The design of power supply EMI filter and the selection of components were discussed. Finally, some problems in the packaging process were also presented.

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Available abstract

Key concepts: EMI, Electromagnetic interference, Filter (signal processing), Line filter, Conducted electromagnetic interference, Power (physics), Switched-mode power supply, Electromagnetic compatibility