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src="https://tyunfile.71360.com/WaterMark/UploadFile/shxiansheng/637402596156676167/3746494.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="ml7gqcz" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/shxiansheng/637402596156676167/3746494.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="s33i7qn" class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價格要求：</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>福建LED價格信息,LED</p><p><span>***更新：</span>2020-11-27 03:08:38</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="jldvnur" 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: </span>021-54169416</p><p><span>地址: </span>陶干路1199號</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="spr2l2g" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="rzwj22a" class="box"><p><p style="text-indent:25px">可實現(xiàn)平滑和幾乎線性的燈功率調(diào)節(jié)控制特性。可得到低功率解決方案，半橋逆變器的供電電壓可以選得很低（如5%~100%的調(diào)光范圍對應(yīng)30~120V），這樣可采用低電壓電容和低耐電壓值的功率MOSFET。由于半橋逆變器工作在恒頻狀態(tài)，福建LED價格信息，所以可采用簡單的ACDC控制即可<span style="display:none;"></span>實現(xiàn)調(diào)光。11燈電流近似和DC變換器的直流供電電壓成正比，調(diào)光幾乎和逆變器的輸出電壓成正比，調(diào)光特性曲線?？蓪崿F(xiàn)平滑和幾乎線性的燈功率調(diào)節(jié)控制特性?？傻玫降凸β式鉀Q方案，半橋逆變器的供電電壓可以選得很低（如5%~100%的調(diào)光范圍對應(yīng)30~120V），這樣可采用低電壓電容和低耐電壓值的功率MOSFET。由于半橋逆變器工作在恒頻狀態(tài)，福建LED價格信息，福建LED價格信息，所以可采用簡單的ACDC控制即可實現(xiàn)調(diào)光。11燈電流近似和DC變換器的直流供電電壓成正比，調(diào)光幾乎和逆變器的輸出電壓成正比，調(diào)光特性曲線。<span style="display:none;"><span style="display:none;"><span style="display:none;"></span></span></span>上海先盛照明電器有限公司為您提供LED，歡迎您的來電！福建LED價格信息</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="福建LED價格信息,LED" src="https://tyunfile.71360.com/WaterMark/UploadFile/shxiansheng/637402596156676167/3746494.png"></div><p>雙隔離安全型LED投光燈產(chǎn)品名稱：雙隔離安全型LED工礦燈（吊燈）產(chǎn)品關(guān)鍵詞：雙隔離、安全型、內(nèi)置雙燈、進口芯片、防眩透鏡、帶熱保護隔離型防水驅(qū)動、高功率因數(shù)、AI防水風(fēng)扇防蚊蟲、全鋁燈體。產(chǎn)品名稱：雙隔離安全型LED投光燈光源套件產(chǎn)品關(guān)鍵詞：雙隔離、安全型、內(nèi)置雙燈、進口芯片、防眩透鏡、帶熱保護隔離型防水驅(qū)動、高功率因數(shù)、AI防水風(fēng)扇防蚊蟲、全鋁燈體。光源參數(shù)：原裝SAMSUNG芯片，3535燈珠、純金線、EMC支架、110lm/w、顯色指數(shù)≧80。光源防護：進口PC料模壓成型透鏡罩，配有防護網(wǎng)。雙隔離安全型LED工礦燈（吊燈）產(chǎn)品關(guān)鍵詞：雙隔離、安全型、內(nèi)置雙燈、進口芯片、防眩透鏡、帶熱保護隔離型防水驅(qū)動、高功率因數(shù)、AI防水風(fēng)扇防蚊蟲、全鋁燈體。技術(shù)特點：1、標(biāo)稱功率：150W（內(nèi)置雙燈）。本產(chǎn)品提供一路50W和一路100W兩路輸出線，可以并聯(lián)為150W，實現(xiàn)50W/100W/150W三檔功率組合，場館LED防震節(jié)能燈，適合外接三路線控分光器或遙控分光器，也適合分別外接聲控、光控、時控、紅外、微波感應(yīng)等自控開關(guān)，工廠LED防震節(jié)能燈，或分出一路接后備電源提供應(yīng)急照明。2、觸電防護：雙隔離型（安全，LED防震節(jié)能燈，不漏電）。本產(chǎn)品采用隔離式燈具。廣東安裝LED價格便宜上海先盛照明電器有限公司致力于提供LED，歡迎您的來電！</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="福建LED價格信息,LED" src="https://tyunfile.71360.com/WaterMark/UploadFile/shxiansheng/637402596473062897/9399623.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，也會出現(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，電感電流將流過諧振電容，由于這個電容的容量較小，所以阻抗較大，而在這個諧振電容上產(chǎn)生較高的電壓。除非兩個功率開關(guān)管有吸收保護電路，否則這時功率開關(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現(xiàn)調(diào)光有以下優(yōu)點:①利用調(diào)節(jié)半橋逆變器供電電壓來實現(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)的工作條件下實現(xiàn)寬調(diào)光范圍的調(diào)光（這也可使開關(guān)控制電路簡化）。①由于開關(guān)工作頻率固定，所以可以針對給定的熒光燈型號簡化控制電路設(shè)計。</p><p> 也有設(shè)計的非常好的隔離驅(qū)動，也是可以做到效率高達92-93%計算：設(shè)定電源效率是85%，那么100W的電功率算上損耗是100/，那么實際光效就是：10000/。光學(xué)器件：一般照明燈具，特別是窄光束角的光源，需要用二次光學(xué)設(shè)計，以達到所需求的配光要求。一般有反光杯，透鏡，防眩光杯這些光學(xué)器件。光學(xué)器件這個行業(yè)設(shè)計需要很專業(yè)的光學(xué)設(shè)計軟件，難度非常高。一般的光學(xué)級透鏡或者反光杯的透光率，都不超過90%。一些防眩光高的，或者光束角窄的光學(xué)器件，透光率會更低一些。計算：設(shè)定光學(xué)透鏡的光透率是90%，那么通過電源和光學(xué)透鏡這兩個組成部分得出的光效為：10000*。熱效率：燈具外殼對LED光源的熱管理的效率。通常燈具將PCB板，燈殼用來做散熱通道，實現(xiàn)熱失散，對燈具有一系統(tǒng)熱阻的設(shè)計問題，也就是好的散熱系統(tǒng)。LED的PN結(jié)上溫度Tj與燈具環(huán)境溫度Ta之間的溫度梯度越小越好。燈具的系統(tǒng)熱阻=燈具外殼（或者內(nèi)部平均溫度）與環(huán)境溫度之差，與燈具功率之比。Rthsystem=(Tscase?Ta)/Pin(℃/w)Rthsystem=(Tscase-Ta)/Pin(℃/w)Rthsystem=(Tscase?Ta)/Pin(℃/w)假設(shè):LED的熱阻為8℃/w，則一個LED上加1w電功率后，LEDPN結(jié)上的溫度Tj與底座散熱底板之間溫差為8℃。LED，就選上海先盛照明電器有限公司，用戶的信賴之選，歡迎您的來電！</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="福建LED價格信息,LED" src="https://tyunfile.71360.com/WaterMark/UploadFile/shxiansheng/637402596613365584/7781043.png"></div><p> 這個黑體加熱的溫度稱之為該光源的顏色溫度，簡稱色溫。其單位用“K”開爾文表示。CorrelatedColorTemperature:但實際上，絕大多數(shù)照明光源的光色并不能恰好在黑體輻射線上，于是RaymondDavis等人提出了相關(guān)色溫的概念，其思想是在均勻色品圖上用距離短的溫度來表示光源的相關(guān)色溫，用K氏溫度表示。CIE1931色度圖相關(guān)色溫，以及u,v坐標(biāo)，x,y坐標(biāo)對比：明白相關(guān)色溫的概念，色溫可以用積分球測定，以及可以知道坐標(biāo)，SDCM，CRI，光通量等，機器如下：色容差SDCM同樣的相關(guān)色溫，坐標(biāo)不同，給人的感覺是完全不同的，如：同樣是3000K相關(guān)色溫的兩個LED燈珠色容差：表征光色電檢測系統(tǒng)軟件計算的X，Y值（uv)與標(biāo)準(zhǔn)光源之間的差別，數(shù)值越小，準(zhǔn)確度越高，光的顏色就越**。圈圈可以理解為步長（step)，分7步，5步，3步，2步，1步。CREE燈珠一般出廠都在4步以內(nèi)；我們現(xiàn)在的SMD2835燈珠，一般都在5步以內(nèi)，一般為2-3步不等；色漂，隨著電流不同，溫度或者時間不同，色溫出線飄逸的現(xiàn)象。越小越好。光品質(zhì)：色容差與色溫的關(guān)系，你真的懂？光品質(zhì)：色容差與色溫的關(guān)系，你真的懂？/content/17/0720/09/27356145_tml燈珠電壓以上圖表燈珠電壓都是按3V的倍數(shù)計算。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！上海銷售LED面板燈</p><p style="text-indent:25px">LED，就選上海先盛照明電器有限公司。福建LED價格信息</p><p> 可調(diào)光至1%的燈亮度?？稍谌我庹{(diào)光設(shè)定值下啟動電子鎮(zhèn)流器電路。可應(yīng)用于多燈應(yīng)用（如燈的群控）場合。調(diào)光相位-燈功率關(guān)系線性好?？煽毓柘嗫卣{(diào)光法由于可控硅相控（斬波法）調(diào)光具有體積小、價格合理和調(diào)光功率控制范圍寬的優(yōu)點，所以可控硅相控調(diào)光法是目前使用zui為***的調(diào)光方法，可控硅調(diào)光法可以將熒光燈的光輸出在50%~100%的范圍內(nèi)調(diào)節(jié)。但是在熒光燈的電感鎮(zhèn)流應(yīng)用場合，由于熒光燈電路需用到一只“啟輝器”，但是當(dāng)熒光燈電感鎮(zhèn)流電路在供電電壓較低的應(yīng)用場合會產(chǎn)生熒光燈啟動困難的問題，這就限制了熒光燈可控硅相控調(diào)光的調(diào)光范圍。福建LED價格信息</p></p><br /><p>文章來源地址: http://m.cdcfah.com/cp/2159168.html</p></div></div></div></div></div><div id="nuwd8nt" class="page-right twoColRt"><div id="apmtl8l" class="box01 margin10 clearfix"><h3><a href="http://m.cdcfah.com/cp/">猜你喜歡</a></h3><div id="bqxugfr" class="recomPic likePro"><a href="http://m.cdcfah.com/cp/814588.html"><div><img src="http://tyunfile.71360.com/UpLoadFile/2019/11/1/14/637082168864691056_lgpj_5374157.jpg" alt="福建ZF配件哪家強信息推薦自業(yè)物資供應(yīng)" class="vcenter" 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