吉林口碑好LED哪里買歡迎咨詢上海先盛照明電器供應(yīng)-b2b網(wǎng)站_b2b電子商務(wù)平臺(tái)【買產(chǎn)品】-上?？谄蚴称酚邢薰?/title><meta name="description" content="led是電光源發(fā)出的光通量和它用電功率之比，單位是流明/瓦（lm/W），是評(píng)價(jià)電光源用電效率主要的技術(shù)參數(shù)。分為兩個(gè)概念：LED器件光效：LEDSource一般LED生產(chǎn)企業(yè)給出的器件光通量大多是Tj（結(jié)溫）=25℃時(shí)，給出的光效值。一般都"><meta name="keywords" content="吉林口碑好LED哪里買,LED"><link rel="canonical" href="http://www.cdcfah.com/"/><meta name="applicable-device" content="pc"><link rel="shortcut icon" href="/static/new_net_01/images/favicon.ico"><link rel="stylesheet" href="/static/new_net_01/css/slick.css" /><link rel="stylesheet" href="/static/new_net_01/css/addnew.css"><link rel="stylesheet" href="/static/new_net_01/css/sidenav.css"><link rel="stylesheet" href="/static/new_net_01/css/style.css" /><link rel="stylesheet" href="/static/new_net_01/css/tab.css"><link rel="stylesheet" href="/static/new_net_01/css/404.css"> <meta name="baidu-site-verification" content="OBVzrC9aaQ" /> <meta http-equiv="Cache-Control" 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href="http://www.cdcfah.com/cp/second-zmgy_zmytdj/">專門用途燈具</a>?<a href="http://www.cdcfah.com/cp/third-zmytdj_leddengju/">LED燈具</a>?吉林口碑好LED哪里買歡迎咨詢上海先盛照明電器供應(yīng)</p><div id="3wfnw35" class="leftbox clearfix"><h1>吉林口碑好LED哪里買歡迎咨詢上海先盛照明電器供應(yīng)</h1><div id="a883s3e" class="proBig"><div id="atb8qv3" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/shxiansheng/637402595906998428/7665052.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="ew5nh3i" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/shxiansheng/637402595906998428/7665052.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="yb3omcs" class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價(jià)格要求：</span>面議</p><p><span>所在地：</span>上海市</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>吉林口碑好LED哪里買,LED</p><p><span>***更新：</span>2020-12-25 08:07:50</p><p><span id="click" >瀏覽次數(shù)：0次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="8ywaj38" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">上海先盛照明電器有限公司</a></p><p><span>聯(lián)系人：</span>顧勇軍</p><p><span>郵箱: </span>522366548@qq.com</p><p><span>電話: </span>13301861712</p><p><span>傳真: </span>021_</p><p><span>網(wǎng)址: </span></p><p><span>手機(jī): </span>021-54169416</p><p><span>地址: </span>陶干路1199號(hào)</p><p>[當(dāng)前離線] <a rel="nofollow"> [加為商友] </a><a rel="nofollow"> [發(fā)送信件] </a></p></div></div><div id="btc5igd" class="page-proshow02"><p class="title">詳細(xì)說(shuō)明</p><div id="u5zmjlp" class="box"><p><p>led是電光源發(fā)出的光通量和它用電功率之比，單位是流明/瓦（lm/W），是評(píng)價(jià)電光源用電效率主要的技術(shù)參數(shù)。分為兩個(gè)概念：LED器件光效：LEDSource一般LED生產(chǎn)企業(yè)給出的器件光通量大多是Tj（結(jié)溫）=25℃時(shí)，給出的光效值。一般都有130-150lm/W,甚至到180lm/W。而在同樣功率下，吉林口碑好LED哪里買，LED輸出光通量根據(jù)溫度升高而降低，大約LED的PN結(jié)溫度Tj每升高1℃，輸出光通量下降。以100lm的燈珠計(jì)算，Tj=80℃的時(shí)候，實(shí)際光通量是，降低了。LED燈具光效：LEDLuminareLED燈具，一般包含以下幾部分：LED光源/燈珠，驅(qū)動(dòng)器，配光器件，散熱裝置和外殼。這四個(gè)部分除了光源之外，其余三個(gè)部分都是對(duì)光效有減弱效果的。計(jì)算：一般計(jì)算，采用不同燈珠排列的總LED器件光效或者流明，是可以疊加的。如：100個(gè)100lm/W的光源，加上100W電功率，輸出的總光通量為10000lm。其他的三個(gè)部分：LED驅(qū)動(dòng)器：LED驅(qū)動(dòng)電源的電源效率（轉(zhuǎn)換效率），因?yàn)轵?qū)動(dòng)電源一般是AC/DC的電源，自身需要消耗電功率，吉林口碑好LED哪里買。對(duì)于驅(qū)動(dòng)器來(lái)說(shuō)，輸出功率與輸入功率的比值，就是電源效率。一般隔離驅(qū)動(dòng)的效率在82-88%左右，越接近設(shè)計(jì)大值，效率越高，吉林口碑好LED哪里買。一般非隔離驅(qū)動(dòng)的效率在90-93%左右。LED，就選上海先盛照明電器有限公司，讓您滿意，歡迎您的來(lái)電！吉林口碑好LED哪里買</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="吉林口碑好LED哪里買,LED" src="https://tyunfile.71360.com/WaterMark/UploadFile/shxiansheng/637402595906998428/7665052.png"></div><p style="text-indent:25px">由于開(kāi)關(guān)工作頻率剛好大于諧振頻率，所以可以降低無(wú)功功率和提高電路工作效率。由于開(kāi)關(guān)工作頻率固定，所以可以比較方便地確定燈負(fù)載匹配電路中無(wú)源器件的參數(shù)?？稍谳^寬的燈功率范圍內(nèi)（5%~100%）保持ZVS工作條件。在很低的半橋逆變器供電電壓下，電子鎮(zhèn)流器電路將會(huì)失去較開(kāi)關(guān)特性，會(huì)出現(xiàn)鎮(zhèn)流電感電流不連續(xù)的工作狀態(tài)。然而在直流供電電壓很低的情況下，這種工作狀態(tài)不再是個(gè)問(wèn)題，這時(shí)功率開(kāi)關(guān)管的電應(yīng)力和損耗都將很小，即使工作在硬開(kāi)關(guān)，在低直流供電電壓情況下（如20V）也不會(huì)產(chǎn)生太多的EMI輻射。<span style="display:none;"><span style="display:none;"></span></span>河南工業(yè)LED現(xiàn)貨上海先盛照明電器有限公司為您提供LED，歡迎您的來(lái)電哦！</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="吉林口碑好LED哪里買,LED" src="https://tyunfile.71360.com/WaterMark/UploadFile/shxiansheng/637402597764566974/7165671.png"></div><p style="text-indent:25px">由于磁芯的工作頻率范圍、驅(qū)動(dòng)電路、控制電路等原因都可能很限制熒光燈的調(diào)節(jié)范圍。①調(diào)頻范圍內(nèi)不易實(shí)現(xiàn)軟開(kāi)關(guān)。輕載時(shí)，不能實(shí)現(xiàn)軟開(kāi)關(guān)，并使功率開(kāi)關(guān)管上的電壓應(yīng)力加大。硬開(kāi)關(guān)的瞬態(tài)過(guò)渡是EMI輻射的主要來(lái)源。如果半橋逆變器不工作在軟開(kāi)關(guān)工作狀態(tài)，則會(huì)導(dǎo)致逆變器的損耗加大，工作效率降低。①開(kāi)關(guān)工作頻率在紅外遙控的工作頻率范圍內(nèi)時(shí)，熒光燈將發(fā)射低電平的紅外線，如果調(diào)頻范圍很寬，其他的紅外遙控裝置如電視機(jī)等將會(huì)受到影響。</p><p> 中等黃綠色；R5，淡藍(lán)綠色；R6，淡藍(lán)色；R7，淡紫藍(lán)色；R8，淡紅紫色；R9，飽和紅色；R10，飽和黃色；R11，飽和綠色；R12，飽和藍(lán)色；R13，白種人膚色；R14，樹(shù)葉綠；R15，黃種人膚色。其中R9的飽和紅色，是現(xiàn)階段白光燈珠的主要考核指標(biāo)。Ra:前面8種顏色的平均值；Re：全部15種顏色的平均值；同樣的晶片大小，如果想要得到的CRI越高，就需要在熒光粉上面增加R9的紅粉，但是會(huì)造成總體光通量的變小?？破召N丨顯色指數(shù)CRI到底是什么你真的懂嗎？/a/_729145ra（顯色指數(shù)(Ra)）_百度百科ra是顯色指數(shù)。為了對(duì)光源的顯色性進(jìn)行定量的評(píng)價(jià)，引入顯色指數(shù)的概念。以標(biāo)準(zhǔn)光源為準(zhǔn)，將其顯色指數(shù)定為100，其余光源的顯色指數(shù)均低于100。...baike./item/ra/2870726眩光UGR待整理。[圖文]眩光指數(shù)(UGR)介紹-百度文庫(kù)在線互動(dòng)式文檔分享平臺(tái)，在這里，您可以和千萬(wàn)網(wǎng)友分享自己手中的文檔，全文閱讀其他用戶的文檔，同時(shí)，也可以利用分享文檔獲取的積分下載文檔wenku./view/LED燈珠的串并方式串聯(lián)用電器首尾依次連接在電路中。特點(diǎn):電路只有一條路徑,任何一處開(kāi)路都會(huì)出現(xiàn)開(kāi)路。同樣LED燈珠串聯(lián)時(shí)：電壓疊加，額定電流不變。上海先盛照明電器有限公司是一家專業(yè)提供LED的公司，歡迎新老客戶來(lái)電！</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="吉林口碑好LED哪里買,LED" src="https://tyunfile.71360.com/WaterMark/UploadFile/shxiansheng/637402595863619471/403425.png"></div><p>led線條燈和led護(hù)欄管主要用于勾勒大樓建筑輪廓或是組成一個(gè)動(dòng)態(tài)的大屏幕，而led洗墻燈主要是打光照射建筑外墻亮化。led投光燈是對(duì)建筑柱子或者頂部局部打亮。它的照射高度比較高，但燈光寬度范圍不遠(yuǎn)。led點(diǎn)光源對(duì)建筑主要是起到點(diǎn)綴燈光作用。很多樓體會(huì)在每層裝一個(gè)點(diǎn)光源用來(lái)點(diǎn)綴。不過(guò)還有一個(gè)作用是用來(lái)做動(dòng)態(tài)點(diǎn)陣屏。樓體亮化工程在接到亮化工程項(xiàng)目時(shí)，一定要先針對(duì)大樓設(shè)計(jì)好亮化效果圖，先讓客戶確定效果圖。客戶滿意后，我們?cè)诟鶕?jù)效果圖選擇適合的led亮化燈具，然后根據(jù)建筑的CAD圖紙算出具體需要的燈具數(shù)量，我們?cè)诟鶕?jù)具體數(shù)量配好開(kāi)關(guān)電源和控制器。一定要注意如果有l(wèi)ed投光燈和led洗墻燈這些的話，要先看效果圖上面燈具具體要照射的高度是多少，在根據(jù)這個(gè)來(lái)選擇燈具光源透鏡度數(shù)和功率大小。因?yàn)椴煌哥R度數(shù)和不同功率，照射的高度是不一樣的。所以建議接到項(xiàng)目時(shí)，一定要選擇一家專業(yè)的，有經(jīng)驗(yàn)和值得信賴的led亮化燈具廠家。戶外樓體亮化是城市夜景亮化很重要的一部分，不僅美化了城市，也提升了城市的形象，可以很好的宣傳城市的**度，讓城市的夜景變得更吸引人。戶外樓體亮化與城市的整體規(guī)劃有很密切的聯(lián)系，是城市夜景亮化很重要的組成部分。LED，就選上海先盛照明電器有限公司，用戶的信賴之選，有需求可以來(lái)電咨詢！河北***LED報(bào)價(jià)表</p><p style="text-indent:25px">上海先盛照明電器有限公司是一家專業(yè)提供LED的公司。吉林口碑好LED哪里買</p><p> 基本的發(fā)光原理并沒(méi)有太大的變化：在兩層半導(dǎo)體之間，電子和與空穴碰撞復(fù)合并于發(fā)光層產(chǎn)生了藍(lán)色的光子。所產(chǎn)生的藍(lán)光有一部分會(huì)直接穿過(guò)熒光涂層直接發(fā)射出去;剩下的一部分會(huì)打在熒光涂層上并與之作用產(chǎn)生黃色光子。藍(lán)色光子與黃色光子共同作用（混合）就產(chǎn)生了白光。上圖是一個(gè)LED的光譜曲線：可以看到藍(lán)光峰值位于波長(zhǎng)450納米處，而之后稍微低矮一點(diǎn)的峰值是由熒光粉吸收藍(lán)光后所產(chǎn)生的黃光的峰值。如果藍(lán)光的占比多一點(diǎn)，則產(chǎn)生高色溫的白光;相反，如果黃光占比多一點(diǎn)，則產(chǎn)生色溫較低的白光。所以：白光的熒光粉偏淺黃，中性光的熒光粉偏黃，而暖光的熒光粉橙色，高顯色的暖光更偏紅。LED燈的發(fā)光原理baijiahao./s?id=68700610&wfr=spider&for=pcLED燈珠的封裝形式引腳插入行（DIP)俗稱：草帽燈珠，有兩個(gè)插件腳。是簡(jiǎn)單，也便宜的燈珠形式。特點(diǎn)：安全性好，性能穩(wěn)定，在低電壓的情況下就可以發(fā)光，并且低損耗、效能高、壽命長(zhǎng)。不過(guò)一般功率偏低，而且應(yīng)用范圍一般在于車燈，指示燈，顯示屏里面。這些功率一般在。中小功率表面貼裝性（SMD)這種燈珠光源是將發(fā)光二極管焊接在電路板表面，而不是穿過(guò)電路板。它的體積小，這類燈珠的型號(hào)有很多，常用的有2835。吉林口碑好LED哪里買</p></p><br /><p>文章來(lái)源地址: http://www.cdcfah.com/cp/2556840.html</p></div></div></div></div></div><div id="cfc0jha" class="page-right twoColRt"><div id="3ziqz88" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div 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