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  Patent History
  • Application
    CN 20048033150 2004-10-11
  • Publication
    CN 100517934 2009-07-22

published patent: Dimmable ballast with resistive input and low electromagnetic interference

TitleDimmable ballast with resistive input and low electromagnetic interference
Priority Date2003-11-10 US 10/518880P
Inventors
Issue Date2009
Citation
China Published Patent Application CN 100517934. Beijing, PRC: State Intellectual Property Office (SIPO) of the P.R.C., 2009 How to Cite?
AbstractAn AC to AC power conversion apparatus with constant power feeding characteristics to fluorescent lamp or HID 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/10722/176599

 

DC FieldValueLanguage
dc.date.accessioned2012-11-30T08:38:12Z-
dc.date.available2012-11-30T08:38:12Z-
dc.date.issued2009-
dc.identifier.citationChina Published Patent Application CN 100517934. Beijing, PRC: State Intellectual Property Office (SIPO) of the P.R.C., 2009en_HK
dc.identifier.urihttp://hdl.handle.net/10722/176599-
dc.description.abstractAn AC to AC power conversion apparatus with constant power feeding characteristics to fluorescent lamp or HID 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.rightsCreative Commons: Attribution 3.0 Hong Kong License For Public Patent Documentsen_US
dc.titleDimmable ballast with resistive input and low electromagnetic interferenceen_HK
dc.typePatenten_US
dc.description.naturepublished_or_final_versionen_US
dc.contributor.inventorPoon, FNK-
dc.contributor.inventorPong, MH-
dc.contributor.inventorLiu, JCP-
patents.identifier.applicationCN 20048033150en_HK
patents.identifier.applicationZL200480033150.7-
patents.description.assigneeUNIV HONG KONG [HK]en_HK
patents.description.countryChina, PRCen_HK
patents.date.publication2009-07-22en_HK
patents.identifier.hkutechidEEE-2003-00141-2-
patents.date.application2004-10-11en_HK
patents.date.priority2003-11-10 US 10/518880Pen_HK
patents.description.ccCNen_HK
patents.identifier.publicationCN 100517934en_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.kindCen_HK
patents.typePatent_publisheden_HK

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