About: Active EMI reduction

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In the field of EMC, active EMI reduction (or active EMI filtering) refers to techniques aimed to reduce or to filter electromagnetic noise (EMI) making use of active electronic components. Active EMI reduction contrasts with passive filtering techniques, such as RC filters, LC filters RLC filters, which includes only passive electrical components. Hybrid solutions including both active and passive elements exist. Standards concerning conducted and radiated emissions published by IEC and FCC set the maximum noise level allowed for different classes of electrical devices. The frequency range of interest spans from 150 kHz to 30 MHz for conducted emissions and from 30 MHz to 40 GHz for radiated emissions. Meeting these requirements and guaranteeing the functionality of an electrical apparatu

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rdfs:label	Active EMI reduction (en)
rdfs:comment	In the field of EMC, active EMI reduction (or active EMI filtering) refers to techniques aimed to reduce or to filter electromagnetic noise (EMI) making use of active electronic components. Active EMI reduction contrasts with passive filtering techniques, such as RC filters, LC filters RLC filters, which includes only passive electrical components. Hybrid solutions including both active and passive elements exist. Standards concerning conducted and radiated emissions published by IEC and FCC set the maximum noise level allowed for different classes of electrical devices. The frequency range of interest spans from 150 kHz to 30 MHz for conducted emissions and from 30 MHz to 40 GHz for radiated emissions. Meeting these requirements and guaranteeing the functionality of an electrical apparatu (en)
foaf:depiction
dct:subject	Electromagnetic compatibility
Wikipage page ID	11965490 (xsd:integer)
Wikipage revision ID	1117664715 (xsd:integer)
Link from a Wikipage to another Wikipage	Electric car Electric power conversion Electromagnetic compatibility Electromagnetic interference Electromagnetic shielding Decibel DC-to-DC converter Dependent source Insertion loss Instrumentation amplifier Power inverter Nullator Nullor Norton's theorem Common-mode signal Feed forward (control) Spread spectrum Electromagnetic compatibility Gain–bandwidth product Current transformer Federal Communications Commission Feedback Direct current Rectifier International Electrotechnical Commission Norator Acoustics LC circuit Transistor Kirchhoff's circuit laws Operational amplifier RC circuit RLC circuit Passive filter LISN Active noise cancelling Differential mode
sameAs	Active EMI reduction Active EMI reduction Active EMI reduction
dbp:wikiPageUsesTemplate	dbt:Reflist
thumbnail	wiki-commons:Special:FilePath/Simple_noise_circuit.png?width=300
has abstract	In the field of EMC, active EMI reduction (or active EMI filtering) refers to techniques aimed to reduce or to filter electromagnetic noise (EMI) making use of active electronic components. Active EMI reduction contrasts with passive filtering techniques, such as RC filters, LC filters RLC filters, which includes only passive electrical components. Hybrid solutions including both active and passive elements exist. Standards concerning conducted and radiated emissions published by IEC and FCC set the maximum noise level allowed for different classes of electrical devices. The frequency range of interest spans from 150 kHz to 30 MHz for conducted emissions and from 30 MHz to 40 GHz for radiated emissions. Meeting these requirements and guaranteeing the functionality of an electrical apparatus subject to electromagnetic interference are the main reason to include an EMI filter. In an electrical system, power converters, i.e. DC/DC converters, inverters and rectifiers, are the major sources of conducted EMI, due to their high-frequency switching ratio which gives rise to unwanted fast current and voltage transients. Since power electronics is nowadays spread in many fields, from power industrial application to automotive industry, EMI filtering has become necessary. In other fields, such as the telecommunication industry where the major focus is on radiated emissions, other techniques have been developed for EMI reduction, such as spread spectrum clocking which makes use of digital electronics, or electromagnetic shielding. (en)
prov:wasDerivedFrom	wikipedia-en:Active_EMI_reduction?oldid=1117664715&ns=0
page length (characters) of wiki page	15783 (xsd:nonNegativeInteger)
foaf:isPrimaryTopicOf	wikipedia-en:Active_EMI_reduction
is Link from a Wikipage to another Wikipage of	Spread spectrum Active emi reduction
is Wikipage redirect of	Active emi reduction
is foaf:primaryTopic of	wikipedia-en:Active_EMI_reduction

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