tag 标签: mr16

相关博文
  • 热度 19
    2013-5-8 23:24
    903 次阅读|
    0 个评论
    We are usually being told that using WLEDs (White Light-Emitting Diodes) for lighting purpose has many advantages. For example, high efficiency, high brightness and much longer lifetime than fluorescent lights. However, since many manufacturers wish to reduce the cost of production and to increase the light intensity, the WLEDs are being 'pushed' to the maximum power they can affort... As a result, the lifetime of those WLEDs will be shortened (or more precisely saying, the light intensity and efficiency decreases significantly) in a period of time. More importantly, the driver / controller will be burnt due to the excess loading or temperature due to the heat generated. Fig. A burnt controller in a MR16 (4x1W) WLED bulb   Although the controller PCB which is very cheap (RMB$2) can be replaced easily, many people may throw those LED bulbs which are out of order away, even if only the controller is burnt.... The result contradicts the original intention that using WLEDs for lightening up the environment.
相关资源
  • 所需E币: 5
    时间: 2019-12-28 19:39
    大小: 1MB
    上传者: wsu_w_hotmail.com
    infineonMR167w-10wLED驱动方案MR167W/10WcontrolboardusingILD4001stepdownLEDcontrollerApplicationNoteAN-EVALRevision:1.0Date:08March2012PowerManagementandMultimarketEdition2012-03-08PublishedbyInfineonTechnologiesAG81726Munich,Germany2012InfineonTechnologiesAGAllRightsReserved.LEGALDISCLAIMERTHEINFORMATIONGIVENINTHISAPPLICATIONNOTEISGIVENASAHINTFORTHEIMPLEMENTATIONOFTHEINFINEONTECHNOLOGIESCOMPONENTONLYANDSHALLNOTBEREGARDEDASANYDESCRIPTIONORWARRANTYOFACERTAINFUNCTIONALITY,CONDITIONORQUALITYOFTHEINFINEONTECHNOLOGIESCOMPONENT.THERECIPIENTOFTHISAPPLICATIONNOTEMUSTVERIFYANYFUNCTIONDESCRIBEDHEREININTHEREALAPPLICATION.INFINEONTECHNOLOGIESHEREBYDISCLAIMSANYANDALLWARRANTIESANDLIABILITIESO……
  • 所需E币: 3
    时间: 2019-12-28 20:09
    大小: 91.32KB
    上传者: 978461154_qq
    MR16及换代灯的LED驱动方案Maxim>AppNotes>DisplaydriversPower-supplycircuitsKeywords:MR16,LED,driver,dimmable,electronictransformer,12VAC,lifetime,electrolytic,LM3404,ZetexAug04,2010APPLICATIONNOTE4708LEDdriversolutionforMR16andsimilarretrofitlampsBy:PieroBiancoAbstract:ThisapplicationnotepresentsanLEDdriversolutionforMR16andsimilarretrofitlamps.ThecircuitdrivesLEDsfroma12VACinput.Thesolutionworkswithbothmagneticandelectronictransformersandisdimmable.Itrequiresnoelectrolyticcapacitors,whichextendsLEDlamplife.Testsetupandresultsareshown.IntroductionThisapplicationnotedescribesaproprietarysolutionthatwilldriveLEDsoffa12VACinputforMR16andsimilarretrofitlamps.Thisdesigncanbeusedwithbothm……
  • 所需E币: 3
    时间: 2019-12-28 20:14
    大小: 91.16KB
    上传者: 238112554_qq
    本文介绍的LED驱动方案用于12VAC输入的MR16及类似的换代灯。该方案可配合磁变压器和电子变压器工作,支持磁变压器的前沿调光和电子变压器的后沿调光。电路中无需使用电解电容,从而有效延长了LED灯的工作寿命,因为电解电容是制约这类系统使用寿命的关键因素。Maxim>AppNotes>DisplaydriversPower-supplycircuitsKeywords:MR16,LED,driver,dimmable,electronictransformer,12VAC,lifetime,electrolytic,LM3404,ZetexAug04,2010APPLICATIONNOTE4708LEDdriversolutionforMR16andsimilarretrofitlampsBy:PieroBiancoAbstract:ThisapplicationnotepresentsanLEDdriversolutionforMR16andsimilarretrofitlamps.ThecircuitdrivesLEDsfroma12VACinput.Thesolutionworkswithbothmagneticandelectronictransformersandisdimmable.Itrequiresnoelectrolyticcapacitors,whichextendsLEDlamplife.Testsetupandresultsareshown.IntroductionThisapplicationnotedescribesaproprietarysolutionthatwilldriveLEDsoffa12VACinputforMR16andsimilarretrofitlamps.Thisdesigncanbeusedwithbothm……
  • 所需E币: 3
    时间: 2019-12-28 20:14
    大小: 91.16KB
    上传者: wsu_w_hotmail.com
    M16换代灯的LED驱动方案Maxim>AppNotes>DisplaydriversPower-supplycircuitsKeywords:MR16,LED,driver,dimmable,electronictransformer,12VAC,lifetime,electrolytic,LM3404,ZetexAug04,2010APPLICATIONNOTE4708LEDdriversolutionforMR16andsimilarretrofitlampsBy:PieroBiancoAbstract:ThisapplicationnotepresentsanLEDdriversolutionforMR16andsimilarretrofitlamps.ThecircuitdrivesLEDsfroma12VACinput.Thesolutionworkswithbothmagneticandelectronictransformersandisdimmable.Itrequiresnoelectrolyticcapacitors,whichextendsLEDlamplife.Testsetupandresultsareshown.IntroductionThisapplicationnotedescribesaproprietarysolutionthatwilldriveLEDsoffa12VACinputforMR16andsimilarretrofitlamps.Thisdesigncanbeusedwithbothm……