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  Patent History
  • Application
    US 11/796108 2004-03-10
  • Publication
    US 20050110429 2005-05-26
  • Granted
    US 7122972 2006-10-17

granted patent: Dimmable Ballast With Resistive Input And Low Electromagnetic Interference

TitleDimmable Ballast With Resistive Input And Low Electromagnetic Interference
Granted PatentUS 7122972
Granted Date2006-10-17
Priority Date2004-03-10 US 11/796108
2003-11-10 US 10/518880P
Inventors
Issue Date2006
Citation
US Patent 7122972. Washington, DC: US Patent and Trademark Office (USPTO), 2006 How to Cite?
AbstractAn Ac To Ac Power Conversion Apparatus With Constant Power Feeding Characteristics To Fluorescent Lamp Or Fd Lamp Is Described. The Constant Power Characteristic Is Achieved By Discontinuous Mode Operation Of Capacitor Coupled In Series With The Load. Packets Of Energy Are Pumped Out To The Load In Each Switching Cycle, Regardless Of The Resonant Characteristics. The Dependence Of The Input Power On The Square Of The Supply Voltage Make The Input Resistive And Produces Good Power Factor Automatically. The Lamp Load Is Dimmable By External Phase Control Dimmer Like Resistive Incandescent Lamps. Multiple Lamp Loads With Different Power Rating Can Be Integrated By Adding More Sets Of Said Capacitors And Associated Components.
Persistent Identifierhttp://hdl.handle.net/10722/99832
References

 

DC FieldValueLanguage
dc.date.accessioned2010-09-25T18:46:02Z-
dc.date.available2010-09-25T18:46:02Z-
dc.date.issued2006-
dc.identifier.citationUS Patent 7122972. Washington, DC: US Patent and Trademark Office (USPTO), 2006en_HK
dc.identifier.urihttp://hdl.handle.net/10722/99832-
dc.description.abstractAn Ac To Ac Power Conversion Apparatus With Constant Power Feeding Characteristics To Fluorescent Lamp Or Fd Lamp Is Described. The Constant Power Characteristic Is Achieved By Discontinuous Mode Operation Of Capacitor Coupled In Series With The Load. Packets Of Energy Are Pumped Out To The Load In Each Switching Cycle, Regardless Of The Resonant Characteristics. The Dependence Of The Input Power On The Square Of The Supply Voltage Make The Input Resistive And Produces Good Power Factor Automatically. The Lamp Load Is Dimmable By External Phase Control Dimmer Like Resistive Incandescent Lamps. Multiple Lamp Loads With Different Power Rating Can Be Integrated By Adding More Sets Of Said Capacitors And Associated Components.en_HK
dc.languageengen_HK
dc.relation.isreferencedbyUS 2007145909 (A1) 2007-06-28en_HK
dc.relation.isreferencedbyUS 7592753 (B2) 2009-09-22en_HK
dc.relation.isreferencedbyUS 2008164817 (A1) 2008-07-10en_HK
dc.relation.isreferencedbyUS 7821208 (B2) 2010-10-26en_HK
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License For Public Patent Documents-
dc.titleDimmable Ballast With Resistive Input And Low Electromagnetic Interferenceen_HK
dc.typePatenten_HK
dc.identifier.emailPong, MH: mhp@eee.hku.hken_HK
dc.identifier.authorityPong, MH=rp00163en_HK
dc.description.naturepublished_or_final_version-
dc.identifier.hkuros132302en_HK
dc.contributor.inventorPoon, N.K.en_HK
dc.contributor.inventorPong, MHen_HK
dc.contributor.inventorLiu, CPen_HK
patents.identifier.applicationUS 11/796108en_HK
patents.identifier.grantedUS 7122972en_HK
patents.description.assigneeUniv Hong Kong [Hk]en_HK
patents.description.countryUnited States of Americaen_HK
patents.date.publication2005-05-26en_HK
patents.date.granted2006-10-17en_HK
dc.relation.referencesUS 4585974 (A) 1986-04-29en_HK
dc.relation.referencesUS 5065072 (A) 1991-11-12en_HK
dc.relation.referencesUS 5510681 (A) 1996-04-23en_HK
dc.relation.referencesUS 5841239 (A) 1998-11-24en_HK
dc.relation.referencesUS 2002047617 (A1) 2002-04-25en_HK
dc.relation.referencesUS 6483256 (B2) 2002-11-19en_HK
dc.relation.referencesUS 2002033679 (A1) 2002-03-21en_HK
dc.relation.referencesUS 6545431 (B2) 2003-04-08en_HK
dc.relation.referencesUS 2005035723 (A1) 2005-02-17en_HK
dc.relation.referencesUS 7084580 (B2) 2006-08-01en_HK
dc.relation.referencesUS 2005110431 (A1) 2005-05-26en_HK
dc.relation.referencesUS 7084584 (B2) 2006-08-01en_HK
patents.identifier.hkutechidEEE-2003-00141-1-
patents.date.application2004-03-10en_HK
patents.date.priority2004-03-10 US 11/796108en_HK
patents.date.priority2003-11-10 US 10/518880Pen_HK
patents.description.ccUSen_HK
patents.identifier.publicationUS 20050110429en_HK
patents.relation.familyCN 1883107 (A) 2006-12-20en_HK
patents.relation.familyCN 100517934 (C) 2009-07-22en_HK
patents.relation.familyEP 1683256 (A1) 2006-07-26en_HK
patents.relation.familyUS 2005110429 (A1) 2005-05-26en_HK
patents.relation.familyUS 7122972 (B2) 2006-10-17en_HK
patents.relation.familyWO 2005046038 (A1) 2005-05-19en_HK
patents.description.kindB2en_HK
patents.typePatent_granteden_HK

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