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Granted Patent: Device For Reducing Noise Current In Power Adaptor
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TitleDevice For Reducing Noise Current In Power Adaptor
 
Granted PatentCN 1407702
 
Granted Date2003-04-02
 
Priority Date2001-08-24 US 09/939068
 
InventorsLiu, Joe Chui Pong
Poon, Franki Ngai Kit
Pong, MH
 
Issue Date2003
 
CitationChina Patent 1407702. Beijing, PRC: State Intellectual Property Office (SIPO) of the P.R.C., 2003 [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.
 
DC FieldValue
dc.contributor.inventorLiu, Joe Chui Pong
 
dc.contributor.inventorPoon, Franki Ngai Kit
 
dc.contributor.inventorPong, MH
 
dc.date.accessioned2012-11-02T06:19:24Z
 
patents.date.application2002-08-24
 
dc.date.available2012-11-02T06:19:24Z
 
patents.date.granted2003-04-02
 
dc.date.issued2003
 
patents.date.priority2001-08-24 US 09/939068
 
patents.date.publication2012-09-06
 
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.
 
patents.description.assigneeHongkong Univ [Hk]
 
patents.description.ccCN
 
patents.description.countryChina, PRC
 
patents.description.kindA
 
dc.description.naturepublished_or_final_version
 
patents.identifier.applicationCN 20021042057
 
dc.identifier.citationChina Patent 1407702. Beijing, PRC: State Intellectual Property Office (SIPO) of the P.R.C., 2003 [How to Cite?]
 
patents.identifier.grantedCN 1407702
 
patents.identifier.hkutechidEEE-2001-00050
 
patents.identifier.publicationUS 20120227120
 
dc.identifier.urihttp://hdl.handle.net/10722/173800
 
patents.relation.familyCN 1407702 (A) 2003-04-02
 
patents.relation.familyCN 1201469 (C) 2005-05-11
 
patents.relation.familyCN 1871761 (A) 2006-11-29
 
patents.relation.familyEP 1289108 (A2) 2003-03-05
 
patents.relation.familyEP 1658669 (A1) 2006-05-24
 
patents.relation.familyHK 1054628 (A1) 2005-12-23
 
patents.relation.familyUS 6490181 (B1) 2002-12-03
 
patents.relation.familyUS 2004032753 (A1) 2004-02-19
 
patents.relation.familyUS 6879500 (B2) 2005-04-12
 
patents.relation.familyUS 2003231515 (A1) 2003-12-18
 
patents.relation.familyWO 2005018077 (A1) 2005-02-24
 
dc.relation.isreferencedbyWO 2005018077 (A1) 2005-02-24
 
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License For Public Patent Documents
 
dc.titleDevice For Reducing Noise Current In Power Adaptor
 
dc.typePatent
 
patents.typePatent_granted
 
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<description.abstract>An 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.</description.abstract>
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