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About EMI Filters and RFI Filters
Electromagnetic Interference (EMI) is often used interchangeably with Radio-Frequency-Interference (RFI). Technically, EMI refers to the type of energy (electromagnetic), while RFI refers to the frequency range of the noise frequency. Both EMI filters and RFI filters describe unwanted signals (noise) that EMI filters and RFI filters are intended to eliminate. EMI filters and RFI filters consist of a circuit or device containing series inductive (load-bearing) and parallel capacitive (nonload-bearing) components, which provides a low impedance path around the protected circuit for high frequency noise. Filters also attenuate impulses since a Fourier's Analysis of a spike will reveal it is composed of high- frequency waveforms. Filters and surge suppressors when used together thus act synergistically.
Engineering Web: EMI Filters and RFI Filters - Machine Design
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Minimizing RFI/EMI interference | Machine Design Your plant's RFI/EMI may not be as bad as this highvoltage arc photographed by John Dyer of Dyer Electric (johndyer.com/sparxarcs.html). But even |
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New Product: EMI/RFI Shielding | Machine Design New Product: EMI/RFI Shielding June 5, 2008 A 52-page catalog covers standard and custom EMI/RFI shielding products. |
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New Product: Snap-on EMI/RFI Gaskets | Machine Design New Product: Snap-on EMI/RFI Gaskets April 24, 2008 The V Series variable-finger snap-on BeCu gaskets can give up to 100 dB of EMI/RFI attenuation. |
