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container"><span id="iukemyy" class="logo"><a href="http://www.cdcfah.com/"><img src="/static/new_net_01/images/logo.png" alt="找產(chǎn)品網(wǎng)"></a></span><span id="omiygqg" class="tigs"> 發(fā)信息做推廣就找產(chǎn)品網(wǎng)<br />企業(yè)電商信息綜合服務(wù)平臺(tái) </span><div id="2g4qweq" class="searchbox"><div id="si2okui" class="searchLt"><div id="aieqeqs" class="tabs"><a href="JavaScript:;" data-type="product" class="active">產(chǎn)品</a><a href="JavaScript:;" data-type="member" class="">公司</a><a href="JavaScript:;" data-type="article" class="">資訊</a><a href="JavaScript:;" data-type="exhibition" class="">展會(huì)</a></div><div id="2cqkma4" class="clearfix searchWrap"><div id="ewaoke4" class="searchInput"><input type="text" name="keywords" placeholder="請(qǐng)輸入搜索關(guān)鍵詞" id="kd"><a href="javascript:void(0)" class="searchBtn" id="search">搜索</a></div></div></div></div></header><nav class="navbox"><div id="cecikyc" class="container"><ul><li id = "index_index"><a 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href="http://www.cdcfah.com/cp/third-zmytdj_leddengju/">LED燈具</a>?工程LED圖片歡迎來電上海先盛照明電器供應(yīng)</p><div id="ycyuguu" class="leftbox clearfix"><h1>工程LED圖片歡迎來電上海先盛照明電器供應(yīng)</h1><div id="4ayui2m" class="proBig"><div id="uukmsa2" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/shxiansheng/637402597856969207/5545199.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="wqm2msi" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/shxiansheng/637402597856969207/5545199.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="s44e20y" 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>工程LED圖片,LED</p><p><span>***更新：</span>2020-12-11 03:07:32</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="ugsmo24" 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="ucwiekw" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="e4gsi4a" class="box"><p><p>只是一般指示燈用直插的。照明的很多用LED燈珠的。這也是應(yīng)用上分類的一部分，事實(shí)上，早期的照明產(chǎn)品和指示燈用LED燈珠，都是直插的?，F(xiàn)在LED燈珠貼片因?yàn)榉庋b工藝的提升，單顆的功率上來了，亮度也上來了，所以，近年來貼片燈珠應(yīng)用越來越廣了。但是，在很多要求小角度，亮度高的指示燈產(chǎn)品上，還是有很多選擇應(yīng)用LED燈珠直插的。所以，LED燈珠和LED貼片哪個(gè)更好。一般我會(huì)建議你，用小角度，要求亮度高，聚光性好，小功率的，建議用LED燈珠直插型的。照明產(chǎn)品，或要求發(fā)光比較均勻，發(fā)光角度要大的，光斑要求小，功率比較大的，一般建議用LED燈珠貼片。LED燈珠和LED貼片哪個(gè)更好，好的你要先告訴我你準(zhǔn)備用在什么產(chǎn)品上，我們的工程師可以給你分析哪款更好。燈珠教授每天都會(huì)分享LED燈珠資訊和行業(yè)信息。led燈珠怎么選型號(hào)？教授給你led燈珠型號(hào)對(duì)照表，工程LED圖片！選燈珠、買燈珠、用燈珠有疑問，就來找燈珠教授！希望LED燈珠和LED貼片哪個(gè)更好的分享能給你的LED燈珠選型帶來幫助，如果你還需要了解更多的LED燈珠貼片，直插，工程LED圖片，大功率或COB燈珠資訊，可以聯(lián)系或留言我們。我們會(huì)時(shí)間跟進(jìn)處理。后的話：買燈珠，找臺(tái)宏，提高選型效率，降低維護(hù)成本。LED，工程LED圖片，就選上海先盛照明電器有限公司，用戶的信賴之選。工程LED圖片</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="工程LED圖片,LED" src="https://tyunfile.71360.com/WaterMark/UploadFile/shxiansheng/637402597856969207/5545199.png"></div><p>以全新的面貌向路人“述說”未來太空的奇幻故事聯(lián)建光電巨幅“U型畫卷”展示三一重工風(fēng)采巨幅“U型畫卷”位于整個(gè)園區(qū)數(shù)字化展示的區(qū)域，由聯(lián)建光電承制的132㎡內(nèi)弧U型LED顯示屏一氣呵成，該屏特別設(shè)計(jì)成U型結(jié)構(gòu)，不僅與整體空間完美融合，同時(shí)滿足展廳內(nèi)人群不同角度觀看清晰一致的較好效果，逾三千萬級(jí)像素、23040×1440超高分辨率顯示效果也讓人嘆為觀止;同時(shí)，加之時(shí)代感與三一重工特色并重的展館設(shè)計(jì)，超“吸睛”的展覽展示搭配其品牌故事歷程，給人以超震撼沉浸式流暢體驗(yàn)。艾比森1800㎡LED顯示屏亮相虹橋樞紐艾比森1800㎡LED顯示屏位于東連虹橋機(jī)場(chǎng)T2航站樓，西接虹橋火車站的奧所未來城，其整體規(guī)劃建設(shè)LED顯示屏6000㎡，目前可打卡面積達(dá)1800㎡，屏體分別建造于上海虹橋樞紐的東廳、文化美食街、中庭、西廳等多個(gè)區(qū)域，并采取裸眼3D效果、屏體錯(cuò)落有致的賽博朋克風(fēng)等不同設(shè)計(jì)格局的創(chuàng)意主題，為各區(qū)域打造不一的視覺體驗(yàn)。而其中大整屏長(zhǎng)達(dá)113米，覆蓋整個(gè)層高，帶來巨大的視覺沖擊力，無論是撲面而來的海浪還是漫延冒泡的鎏金，都給人身臨其中的真實(shí)體驗(yàn)。此后，奧所未來城與艾比森還將有人屏互動(dòng)游戲，把虛擬世界生動(dòng)地與線下用餐場(chǎng)景相融合。工程LED圖片上海先盛照明電器有限公司是一家專業(yè)提供LED的公司，歡迎您的來電！</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="工程LED圖片,LED" src="https://tyunfile.71360.com/WaterMark/UploadFile/shxiansheng/637402596873453520/2246818.png"></div><p style="text-indent:25px">除了小的脈沖占空比外，當(dāng)燈電路發(fā)生故障時(shí)，也會(huì)出現(xiàn)功率開關(guān)管的不連續(xù)電流工作狀態(tài)，當(dāng)燈負(fù)載出現(xiàn)開路故障時(shí)，電感電流將流過諧振電容，由于這個(gè)電容的容量較小，所以阻抗較大，而在這個(gè)諧振電容上產(chǎn)生較高的電壓。除非兩個(gè)功率開關(guān)管有吸收保護(hù)電路，否則這時(shí)功率開關(guān)管將承受很大的電壓應(yīng)力。2、改變半橋逆變器供電電壓調(diào)光法利用改變半橋逆變器供電電壓的方法實(shí)現(xiàn)調(diào)光有以下優(yōu)點(diǎn):①利用調(diào)節(jié)半橋逆變器供電電壓來實(shí)現(xiàn)調(diào)光。①脈沖占空比（約0.5）固定，使半橋逆變器工作在軟開關(guān)工作狀態(tài)，并可在鎮(zhèn)流電感電流連續(xù)的工作條件下實(shí)現(xiàn)寬調(diào)光范圍的調(diào)光（這也可使開關(guān)控制電路簡(jiǎn)化）。①由于開關(guān)工作頻率固定，所以可以針對(duì)給定的熒光燈型號(hào)簡(jiǎn)化控制電路設(shè)計(jì)。</p><p> 半導(dǎo)體的物理伏安特性伏安特性所謂伏安特性，即是流過P-N結(jié)的電流隨電壓變化的特性，在示波器上能十分形象地展示這種變化。一根完整的伏安曲線包括正向特性與反向特性。通常，反向特性曲線變化較為陡峭，當(dāng)電壓超過某個(gè)閾值時(shí)，電流會(huì)出現(xiàn)指數(shù)式上升。通?？捎梅聪驌舸╇妷?，反向電流和正向電壓三個(gè)參數(shù)來進(jìn)行伏安特性曲線的描述。所以，LED的工作前提：LED屬于半導(dǎo)體，有單向?qū)щ娦?，流過的電流和電壓不成線性正比。LED光通量隨電流增大而增大，但也不成正比。工作在低壓的直流電下，一般電壓在2-5VDC之間，紅光一般工作低壓低，藍(lán)光（白光）工作電壓在3-4V，而紫外光電壓在4-5V之間；電壓不能過高，大于某個(gè)閾值的時(shí)候，電流會(huì)指數(shù)式上升，沒有保護(hù)電路的話，一般會(huì)擊穿晶片；反向電壓一般為10V左右，大不得超過15V，否則會(huì)反向擊穿燈珠。（接反會(huì)導(dǎo)致反向電壓，過高會(huì)造成損壞）LED各類型封裝芯片的一般額定電壓，額定電流表格SMD中小功率SMD中小功率封裝形式的電壓，電流都不一定的。一般是3-5V，不過也有特意幾個(gè)晶片串聯(lián)一起的高壓燈珠，有6V，9V，18V，24V等。<span style="display:none;"></span>LED，就選上海先盛照明電器有限公司，讓您滿意，歡迎您的來電！</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="工程LED圖片,LED" src="https://tyunfile.71360.com/WaterMark/UploadFile/shxiansheng/637402597764566974/7165671.png"></div><p>應(yīng)用范圍比較廣，可以在線性燈具，燈帶，筒燈，面光源等全系列的燈具應(yīng)用上。這些燈珠封裝形式的功率，一般設(shè)計(jì)為，，，不過后來因?yàn)榫夹g(shù)和散熱支架（PCT，紅銅）等，功率可以上升到1W,甚至2W?，F(xiàn)在甚至出現(xiàn)有5050，7070等SMD，功率能到3W以上。大功率表面貼裝性第三種燈珠也是表貼型，它與小功率表貼在本質(zhì)上很類似，只不過大功率、體積都大一點(diǎn);在細(xì)微結(jié)構(gòu)上，多了一個(gè)透鏡，可以將光線更好地匯聚在一起。這些類型功率都偏大，一般屬于國(guó)外大芯片公司壟斷了技術(shù)，一般封裝形式有：大功率芯片，3535；電壓一般還是3V-5V，額定電流可以從300mA-1500mA之間；集成封裝性（COB)它是將很多燈珠芯片封裝在同一塊板上，晶片是通過一定形式的串并數(shù)，用金線連接的。一般的串并數(shù)都是10串，或者12串的設(shè)計(jì)，因?yàn)槎际窃O(shè)計(jì)在特低安全SELV42V以下。一般基板材料有：鋁基板，陶瓷板；例如CREE的COB一般是陶瓷基板；注意：安裝時(shí)候，不能用手或者其他工具觸摸，按壓熒光粉表面。上海先盛照明電器有限公司為您提供LED，有需求可以來電咨詢！四川品質(zhì)LED現(xiàn)貨</p><p style="text-indent:25px">上海先盛照明電器有限公司致力于提供LED，歡迎您的來電！工程LED圖片</p><p> 現(xiàn)在LED燈具的光效=。疑問：不同燈珠廠給出的參數(shù)表格不一致，難以按照以上公式計(jì)算；燈珠模組排列是否會(huì)導(dǎo)致光效衰減？如何知道燈具外殼溫度，推算出Tj溫度？LED燈具光效與LED光效的區(qū)別（精）-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燈珠的晶片大小與光效LED能承受的電流，取決于：晶片大小，一般用mil（1mil=1/1000inch=)稱呼大小，舉例：SMD2835的三安芯片，一般做做10x30mil或者17x34mil。LED的燈珠使用，需要留有余量，一般需要比額定電流低20%左右。LED燈珠的評(píng)價(jià)一般按光效來計(jì)算，光通量/功率=光效，越高越貴?，F(xiàn)在的LED光效一般都能達(dá)到100-150lm/W,甚至達(dá)到190lm/W。LED燈珠的光效，其實(shí)是跟驅(qū)動(dòng)電流一定程度上成反比，意思是驅(qū)動(dòng)電流約靠近額定電流，其實(shí)光效是越低的。一般燈珠廠標(biāo)注的高光效，都是在比較低的額定電流下測(cè)定的。燈珠色溫.，相關(guān)色溫ColorTemperature:色溫是照明光學(xué)中用于定義光源顏色的一個(gè)物理量。即把某個(gè)黑體加熱到一個(gè)溫度，其發(fā)射的光的顏色與某個(gè)光源所發(fā)射的光的顏色相同時(shí)。工程LED圖片</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/2352815.html</p></div></div></div></div></div><div id="8iub332" class="page-right twoColRt"><div id="ornequ2" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="jm789jd" class="recomPic 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