Electromagnetic Interference (EMI)

Shielding Techniques

Electromagnetic Interference (EMI) and Shielding Techniques in Electrical Systems

Learn about EMI sources, effects, and shielding techniques to protect electrical systems from interference.

Electromagnetic Interference (EMI) and Shielding Techniques in Electrical Systems

Electromagnetic Interference (EMI) is a critical issue in modern electrical and electronic systems. It refers to the unwanted electromagnetic signals that disrupt the normal operation of electrical circuits and devices. EMI can originate from both natural sources, such as lightning and solar flares, and man-made sources, including power lines, wireless communications, and industrial machinery. Shielding is a widely used technique to mitigate EMI, ensuring reliable performance of electronic and electrical systems. This article explores the sources, effects, and shielding techniques used to counteract EMI in electrical systems. Sources of EMI EMI can be broadly classified into two categories: Natural Sources Lightning strikes Solar flares Electrostatic discharges Cosmic radiation Man-Made Sources Switching power supplies Electric motors and generators Radio frequency (RF) transmitters High-voltage power lines Digital electronic devices (computers, mobile phones, and communication networks) Types of EM…

About the author

Prasun Barua is a graduate engineer in Electrical and Electronic Engineering with a passion for simplifying complex technical concepts for learners and professionals alike. He has authored numerous highly regarded books covering a wide range of elec…

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