标签: brightness

Acommonbrightness-controlcircuitforLEDsusesanelectricallycontrolledpotentiometer(EPOT)toachievedigitalcontroloftheLEDbrightness.ReplacingtheEPOTwithanRCnetwork,however,reducesboththeICcountandtherequirednumberofcontrollines.……

Imagesareadescriptionofhowaparametervariesoverasurface.Forexample,standardvisualimagesresultfromlightintensityvariationsacrossatwo-dimensionalplane.However,lightisnottheonlyparameterusedinscientificimaging.Forexample,animagecanbeformedofthetemperatureofanintegratedcircuit,bloodvelocityinapatient'sartery,x-rayemissionfromadistantgalaxy,groundmotionduringanearthquake,etc.Theseexoticimagesareusuallyconvertedintoconventionalpictures(i.e.,lightimages),sothattheycanbeevaluatedbythehumaneye.Thisfirstchapteronimageprocessingdescribeshowdigitalimagesareformedandpresentedtohumanobservers.CHAPTERImageFormation&Display23Imagesareadescriptionofhowaparametervariesoverasurface.Forexample,standardvisualimagesresultfromlightintensityvariationsacrossatwo-dimensionalplane.However,lightisnottheonlyparameterusedinscientificimaging.Forexample,animagecanbeformedofthetemperatureofanintegratedcircuit,bloodvelocityinapatient'sartery,x-rayemissionfromadistantgalaxy,groundmotionduringanearthquake,etc.Theseexoticimagesareusuallyconvertedintoconventionalpictures(i.e.,lightimages),sothattheycanbeevaluatedbythehumaneye.Thisfirstchapteronimageprocessingdescribeshowdigitalimagesareformedandpresentedtohumanobservers.DigitalImageStructure……

Abstract:Thisapplicationnotedemonstrateshowtomakeasimplesystemthatmonitorstemperatureandanalogvoltagesremotely.Onmeetingcertainalarmconditions,thesystemcansendSMSmessages,whicharethenconvertedtoemailandforwardedtothedesignatedemailaddress.Maxim>Designsupport>Appnotes>1-WireDevices>APP3297Maxim>Designsupport>Appnotes>A/DandD/AConversion/SamplingCircuits>APP3297Maxim>Designsupport>Appnotes>TemperatureSensorsandThermalManagement>APP3297Keywords:sms,remotemonitor,remotemonitoring,remotee-mail,standalone,stand-alone,standalone,remotetemperature,brightness,gsm,network,telemetryAug09,2004REFERENCEDESIGN3297INCLUDES:TestedcircuitSchematicDescriptionSoftwareRemoteMonitoringSystemSendsEmailviaSMSAbstract:Thisapplicationnotedemonstrateshowtomakeasimplesystemthatmonitorstemperatureandanalogvoltagesremotely.Onmeetingcertai……

：白色发光二极管（WLED）驱动器，提供高效率和LCD显示器的背光的亮度匹配。控制亮度，这些驱动程序在配置串行或并行排列的LED电流调节。电荷泵驱动并联LED，其监管与个别监管机构或简单的镇流电阻的电流。基于电感的转换器提供电流的LED串，天生平等。两种配置的目的，有效地推动手机，掌上电脑，数码相机的LED。Maxim>Designsupport>Appnotes>Automotive>APP1804Maxim>Designsupport>Appnotes>Power-SupplyCircuits>APP1804Keywords:whiteLED,light-emittingdiode,bias,LCDbacklighting,serial,PWM,shutdown,lownoise,overvoltage,over-voltageprotection,dimmingcontrol,internalMOSFET,highefficiency,displays,currentregulators,brightnessmatching,currentmatchingMar25,2003REFERENCEDESIGN1804INCLUDES:TestedcircuitSchematicDescriptionDrivingLEDsinBattery-OperatedApplications:ControllingBrightnessPowerEfficientlyAbstract:Whitelight-emittingdiode(WLED)driversprovidehighefficiencyandbrightness……

摘要：高亮度（HB）LED是一个很好的解决备用电池照明应用，最明显的应急照明。但是，它可以是一个挑战，结合高容量，单节Li+电池的高效LED光源。本应用笔记提出切实可行的解决办法，使用MAX16834还HBLED从低电压源驱动功率高亮度发光二极管系列。Maxim>DesignSupport>TechnicalDocuments>ApplicationNotes>BatteryManagement>APP5287Maxim>DesignSupport>TechnicalDocuments>ApplicationNotes>LEDLighting>APP5287Maxim>DesignSupport>TechnicalDocuments>ApplicationNotes>Power-SupplyCircuits>APP5287Keywords:LED,lowvoltage,lithium,battery,singlecell,highbrightness,emergencylighting,LEDdriverApr11,2012APPLICATIONNOTE5287SimpleLow-VoltageHigh-Brightness(HB)-LEDSolutionforLi+Battery-OperatedSystemsBy:KeithWelsh,SeniorMemberoftheTechnicalStaffApr11,2012Abstract:High-brightness(HB)LEDsareagoodsolutionforbatterybackuplightingapplica……

摘要：高亮度（HB）LED是一个很好的解决备用电池照明应用，最明显的应急照明。但是，它可以是一个挑战，结合高容量，单节Li+电池的高效LED光源。本应用笔记提出切实可行的解决办法，使用MAX16834还HBLED从低电压源驱动功率高亮度发光二极管系列。Maxim>DesignSupport>TechnicalDocuments>ApplicationNotes>BatteryManagement>APP5287Maxim>DesignSupport>TechnicalDocuments>ApplicationNotes>LEDLighting>APP5287Maxim>DesignSupport>TechnicalDocuments>ApplicationNotes>Power-SupplyCircuits>APP5287Keywords:LED,lowvoltage,lithium,battery,singlecell,highbrightness,emergencylighting,LEDdriverApr11,2012APPLICATIONNOTE5287SimpleLow-VoltageHigh-Brightness(HB)-LEDSolutionforLi+Battery-OperatedSystemsBy:KeithWelsh,SeniorMemberoftheTechnicalStaffApr11,2012Abstract:High-brightness(HB)LEDsareagoodsolutionforbatterybackuplightingapplications,mostnot……

摘要：在这个电路中，数字电位器（DS1869）有助于提供手动控制LED亮度的LED驱动IC（MAX16800）。该电路还提供了对过热和过载条件下的热保护。Maxim>AppNotes>DigitalPotentiometersDisplayDriversKeywords:LEDdrivers,linearbrightnesscontrollers,digitalpotentiometersJan10,2011APPLICATIONNOTE4561LinearBrightnessControllerforLEDsHas64TapsBy:AhmadAyarAbstract:Inthiscircuit,adigitalpotentiometer(DS1869)aidsanLED-driverIC(MAX16800)inprovidingmanualcontroloftheLEDbrightness.Thecircuitalsoprovidesthermalprotectionagainstexcessiveheatandoverloadconditions.AsimilarversionofthisarticleappearedintheMarch15,2007issueofEDNmagazine.ApplicationsthatincludeLEDsbutnomicrocontroller(orotherformofcontrolintelligence)canbenefitfromasimplecircuitthatprovidesmanualcontroloftheLED'slightintensity.Amon……

摘要：DS1050是一个5位的脉冲宽度调制（PWM）由2线总线控制。这允许一个主设备，一个单一的2线总线控制多达8奴隶（DS1050和其他2线设备）。本应用笔记中，演示了通过PC机的串行接口2线总线接口。硬件和软件的要求，并给出从DallasSemiconductor的FTP站点下载。Maxim>AppNotes>DigitalPotentiometersDisplayDriversPower-SupplyCircuitsKeywords:fancontrol,fanspeed,brightnesscontrol,contrastcontrol,2wirebus,2wiredevices,PWM,pulseDec17,2001widthmodulator,dcmotor,LCDLEDbacklightAPPLICATIONNOTE163UsingDS1050ProgrammablePWMstoControlaDCMotorandanLCDLEDBacklightAbstract:TheDS1050isa5-bitpulse-widthmodulator(PWM)controlledbya2-wirebus.Thisallowsasinglemasterdevicetocontrolupto8slave(DS1050andother2-wiredevices)onasingle2-wirebus.Inthisapplicationnote,aninterfacetoa2-wirebusviaaPCserialinterfaceisdemonstrated.ThehardwareandsoftwarerequirementsaregivenandavailablefordownloadfromtheDallasSemiconductorFTPsite.IntroductionTheD……

摘要：一个普通的LED的亮度控制电路采用电控电位器（EPOT）实现数字控制LED亮度。然而，更换一个RC网络的EPOT减少IC的数量和所需数量的控制线。Maxim>AppNotes>DisplayDriversKeywords:PWM,pulse-widthmodulation,LEDbrightnesscontrol,LEDcurrentregulator,LEDdriverJul19,2006APPLICATIONNOTE3866Low-PowerPWMOutputControlsLEDBrightnessAbstract:Acommonbrightness-controlcircuitforLEDsusesanelectricallycontrolledpotentiometer(EPOT)toachievedigitalcontroloftheLEDbrightness.ReplacingtheEPOTwithanRCnetwork,however,reducesboththeICcountandtherequirednumberofcontrollines.AsysteminwhichamicrocontrollerorprogrammablelogiccontrolsoneormoreLEDsoftenrequiresthecapabilityofcontrollingLEDbrightness.Acommonapproachforachievingthisadjustsanelectricallycontrolledpotentiometer(EPOT),whichinturn,controlstheLEDdr……

摘要：DS1050是由2线总线控制5位脉冲宽度调制器(PWM)。这允许单个主机设备来控制达8奴隶（DS1050和其他2线设备）单2线公共汽车上。在此应用程序的说明，这表明2线公共汽车通过PC串行接口的接口。给定和从达拉斯半导体FTP站点下载可用的硬件和软件要求。Maxim>AppNotes>DigitalPotentiometersDisplayDriversPower-SupplyCircuitsKeywords:fancontrol,fanspeed,brightnesscontrol,contrastcontrol,2wirebus,2wiredevices,PWM,pulseDec17,2001widthmodulator,dcmotor,LCDLEDbacklightAPPLICATIONNOTE163UsingDS1050ProgrammablePWMstoControlaDCMotorandanLCDLEDBacklightAbstract:TheDS1050isa5-bitpulse-widthmodulator(PWM)controlledbya2-wirebus.Thisallowsasinglemasterdevicetocontrolupto8slave(DS1050andother2-wiredevices)onasingle2-wirebus.Inthisapplicationnote,aninterfacetoa2-wirebusviaaPCserialinterfaceisdemonstrated.ThehardwareandsoftwarerequirementsaregivenandavailablefordownloadfromtheDallasSemiconductorFTPsite.IntroductionTheD……