Presenter Information

Ashwin Shashindranath

Research Advisor

David J. Pommerenke

Advisor's Department

Electrical and Computer Engineering


An experimental investigation on the radiated emissions caused by a high current switched mode power supply (SMPS) that supplies a CPU was performed. The emissions testing revealed data that could be used to predict causes of electromagnetic radiation from inside the computer. The noise sources identified included clocks on the motherboard, which was excluded for the purposes of this study. Testing concentrated on the SMPS and some theoretical ideas are proposed for better construction of the power supply.

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