published patent: Device for reducing noise current in power adaptor

TitleDevice for reducing noise current in power adaptor
Priority Date2001-08-24 US 09/939068
Inventors
Issue Date2005
Citation
China Published Patent Application CN 1201469. Beijing, PRC: State Intellectual Property Office (SIPO) of the P.R.C., 2005 How to Cite?
AbstractAn apparatus for reducing electromagnetic interference due to common mode current in power converters is disclosed. Common mode current flowing through high parasitic capacitance on the load side typically contributes significantly to the electromagnetic interference. In order to reduce the electromagnetic interference the common mode current is reduced by reducing the voltage driving a current through the high parasitic capacitance. A counter-acting voltage source produces a voltage out of phase with the voltage driving the common mode current. Such a counter-acting voltage is obtained with the aid of a winding coupled to the magnetic component in the power converter or by one or more active components. The counter-acting voltage source is connected in series with a capacitance element connected between the input and output sides of the converter-input terminal and output terminal when electrical isolation between the input and the output is desired.
Persistent Identifierhttp://hdl.handle.net/10722/176647

 

DC FieldValueLanguage
dc.date.accessioned2012-11-30T08:38:18Z-
dc.date.available2012-11-30T08:38:18Z-
dc.date.issued2005-
dc.identifier.citationChina Published Patent Application CN 1201469. Beijing, PRC: State Intellectual Property Office (SIPO) of the P.R.C., 2005en_HK
dc.identifier.urihttp://hdl.handle.net/10722/176647-
dc.description.abstractAn apparatus for reducing electromagnetic interference due to common mode current in power converters is disclosed. Common mode current flowing through high parasitic capacitance on the load side typically contributes significantly to the electromagnetic interference. In order to reduce the electromagnetic interference the common mode current is reduced by reducing the voltage driving a current through the high parasitic capacitance. A counter-acting voltage source produces a voltage out of phase with the voltage driving the common mode current. Such a counter-acting voltage is obtained with the aid of a winding coupled to the magnetic component in the power converter or by one or more active components. The counter-acting voltage source is connected in series with a capacitance element connected between the input and output sides of the converter-input terminal and output terminal when electrical isolation between the input and the output is desired.en_HK
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License For Public Patent Documentsen_US
dc.titleDevice for reducing noise current in power adaptoren_HK
dc.typePatenten_US
dc.description.naturepublished_or_final_version-
dc.contributor.inventorLiao Zhubangen_HK
dc.contributor.inventorPang Yijieen_HK
dc.contributor.inventorPong MHen_HK
patents.identifier.applicationCN 20021042057en_HK
patents.description.assigneeHONGKONG UNIV [CN]en_HK
patents.description.countryChina, PRCen_HK
patents.date.publication2005-05-11en_HK
patents.identifier.hkutechidEEE-2001-00050-
patents.date.application2002-08-24en_HK
patents.date.priority2001-08-24 US 09/939068en_HK
patents.description.ccCNen_HK
patents.identifier.publicationCN 1201469en_HK
patents.relation.familyCN 1407702 (A) 2003-04-02en_HK
patents.relation.familyCN 1201469 (C) 2005-05-11en_HK
patents.relation.familyCN 1871761 (A) 2006-11-29en_HK
patents.relation.familyEP 1289108 (A2) 2003-03-05en_HK
patents.relation.familyEP 1658669 (A1) 2006-05-24en_HK
patents.relation.familyHK 1054628 (A1) 2005-12-23en_HK
patents.relation.familyUS 6490181 (B1) 2002-12-03en_HK
patents.relation.familyUS 2004032753 (A1) 2004-02-19en_HK
patents.relation.familyUS 6879500 (B2) 2005-04-12en_HK
patents.relation.familyUS 2003231515 (A1) 2003-12-18en_HK
patents.relation.familyWO 2005018077 (A1) 2005-02-24en_HK
patents.description.kindCen_HK
patents.typePatent_publisheden_HK

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