隨著社會(huì)的發(fā)展和人口的增長(zhǎng)，人們對(duì)能源的需求量越來(lái)越大，節(jié)能環(huán)保已經(jīng)成為人類迫切需要解決的問(wèn)題。太陽(yáng)能作為一種清潔能源受到越來(lái)越多的關(guān)注，而LED具有發(fā)光效率高、壽命長(zhǎng)等優(yōu)點(diǎn)。基于Si1000單片機(jī)，采用蓄電池充電芯片LT3652和LED驅(qū)動(dòng)芯片LT3756，將太陽(yáng)能光伏發(fā)電和LED照明相結(jié)合，應(yīng)用于小型街道路燈照明系統(tǒng)，并結(jié)合傳感技術(shù)及無(wú)線通訊技術(shù)，提高了蓄電池的充電效率，實(shí)現(xiàn)了光控、聲控、及無(wú)線控制功能。
上傳時(shí)間： 2013-10-13
上傳用戶：fklinran
DM11C 是專為L(zhǎng)ED 顯示應(yīng)用所設(shè)計(jì)的沈入電流式恒流驅(qū)動(dòng)芯片。內(nèi)建移位緩存器，數(shù)據(jù)鎖存器，以及恒流電路組件于硅CMOS 芯片上。8 個(gè)輸出通道的電流可由一外掛電阻調(diào)整。內(nèi)建開(kāi)/短路偵測(cè)電路組件幫助使用者偵測(cè)LED 異常(開(kāi)路與短路)。系統(tǒng)可藉由讀回串行輸出端的偵測(cè)數(shù)據(jù)與原始數(shù)據(jù)進(jìn)行比對(duì)以判定哪一通道發(fā)生異常。過(guò)溫?cái)嚯姽δ軇t可保護(hù)芯片避免在高溫環(huán)境使用下而毀損
標(biāo)簽： LED 8位 恒流驅(qū)動(dòng)芯片 錯(cuò)誤
上傳時(shí)間： 2013-11-09
上傳用戶：zw380105939
The makers of handheld medical, industrial and consumerdevices use a wide variety of high resolution, small tomedium sized color TFT LCD displays. The power supplydesigners for these displays must contend with shrinkingboard area, tight schedules, and variations in displaytypes and feature requirements. The LTC®3524 simplifi esthe designer’s job by combining a versatile, easily programmed,TFT LCD bias supply and white LED backlightdriver in a low profi le 4mm × 4mm QFN package.
上傳時(shí)間： 2013-10-26
上傳用戶：chens000
As environmental concerns over traditional lighting increaseand the price of LEDs decreases, high power LEDsare fast becoming a popular lighting solution for offl ineapplications. In order to meet the requirements of offl inelighting—such as high power factor, high effi ciency, isolationand TRIAC dimmer compatibility—prior LED driversused many external discrete components, resulting incumbersome solutions. The LT®3799 solves complexity,space and performance problems by integrating all therequired functions for offl ine LED lighting.
上傳時(shí)間： 2013-10-13
上傳用戶：dongqiangqiang
Once relegated to the hinterlands of low cost indicatorlights, the LED is again in the spotlight of the lightingworld. LED lighting is now ubiquitous, from car headlightsto USB-powered lava lamps. Car headlights exemplifyapplications that capitalize on the LED’s clear advantages—unwavering high quality light output, tough-assteelrobustness, inherent high effi ciency—while a USBlava lamp exemplifi es applications where only LEDs work.Despite these clear advantages, their requirement forregulated voltage and current make LED driver circuitsmore complex than the venerable light bulb, but some newdevices are closing the gap. For instance, the LTM®8040μModule™ LED driver integrates all the driver circuitryinto a single package, allowing designers to refocus theirtime and effort on the details of lighting design criticalto a product’s success.
上傳時(shí)間： 2013-10-16
上傳用戶：togetsomething
LED顯示屏品種繁多，價(jià)格戰(zhàn)逐漸彌漫，競(jìng)爭(zhēng)日益白熱化，各廠家甚至對(duì)同一款產(chǎn)品報(bào)價(jià)都不一樣。其實(shí)，熟悉LED顯示屏行業(yè)的人都知道，有很多因素制約著LED顯示屏的價(jià)格：比如顯示屏的規(guī)格，材料系統(tǒng)配套因素和施工因素等等，無(wú)一不是價(jià)格的決定因素。
上傳時(shí)間： 2013-10-09
上傳用戶：lingfei
LED在電子系統(tǒng)中使用已經(jīng)有很多年了，主要用作電子設(shè)備的指示燈。現(xiàn)在在亮度和色彩深度方面取得的重大進(jìn)步，意味著LED現(xiàn)在可以用于更廣泛的應(yīng)用，從手機(jī)和多媒體播放機(jī)中的背光，汽車儀表盤(pán)、尾燈，一直到取代商業(yè)和家庭照明應(yīng)用中的傳統(tǒng)光源。
標(biāo)簽： LED 可調(diào)光 驅(qū)動(dòng) 方案
上傳時(shí)間： 2013-11-07
上傳用戶：zhengzg
LED燈具積小質(zhì)輕，可選用不同光色的LED組合成照度柔和的各種模塊，任意安裝在居室中，居室照明燈具的光源可能來(lái)源于地面、墻面、窗臺(tái)、家具、飾物等。因此，未來(lái)居室照明將不再局限于單個(gè)燈具，而將由單個(gè)燈具照明轉(zhuǎn)化為無(wú)照明器具感的整體照明效果的無(wú)影燈。
上傳時(shí)間： 2013-11-02
上傳用戶：ligi201200
本發(fā)明的LED 光源包含矩形的LED 芯片和內(nèi)藏該芯片的透明樹(shù)脂封裝體。樹(shù)脂封裝體具有用于將LED 芯片發(fā)出的光射出到封裝體的外部的鏡界面。
上傳時(shí)間： 2013-12-14
上傳用戶：kernor
本發(fā)明用于LED 光源的電源向以串聯(lián)或并聯(lián)型式連接的不同數(shù)量LED 提供功率。所述電源使用電流反饋來(lái)調(diào)節(jié)到LED 的功率并對(duì)電路和電路故障提供保護(hù)。
上傳時(shí)間： 2013-11-04
上傳用戶：奇奇奔奔
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