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General Technical InformationVishay RoedersteinDocument Number 26529To contact us: 04-Sep-023RADIO INTERFERENCE SUPPRESSION1. Origin and Spreading of Interference:There are two main sources of radio interference: Devices, which due to their construction produce RFenergy. These include generators for use in industry,medicine and science, as well as oscillators, radioand TV receivers etc. Devices, which produce a wide spectrum offrequencies, due to rapid variations in electricalcurrent intensity. These include devices with switchingcomponents, thyristors, triacs, commutators from source to receiver is spread in three ways:alonwiringby coupling, andby radiationTo frequencies of 30MHz approximately, interference isspread mainly along the installed electrical wiring.

General Technical Information Vishay Roederstein www.vishay.com To contact us: RFI@Vishay.com Document Number 26529 4 Revision 04 …

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