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歡迎來電上海先盛照明電器供應(yīng)</h1><div id="88blikr" class="proBig"><div id="a37lnkh" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/shxiansheng/637402596442144929/6544844.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="3izgdfm" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/shxiansheng/637402596442144929/6544844.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="8provmy" 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>河北官方LED量大從優(yōu),LED</p><p><span>***更新：</span>2020-11-27 01:08:33</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="8ykcz3r" 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="bfxum2e" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="fjvn3jp" class="box"><p><p> 半導(dǎo)體的物理伏安特性伏安特性所謂伏安特性，河北官方LED量大從優(yōu)，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╇妷海聪螂娏骱驼螂妷喝齻€(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，河北官方LED量大從優(yōu)，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，河北官方LED量大從優(yōu)，18V，24V等。<span style="display:none;"></span>上海先盛照明電器有限公司LED值得用戶放心。河北官方LED量大從優(yōu)</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="河北官方LED量大從優(yōu),LED" src="https://tyunfile.71360.com/WaterMark/UploadFile/shxiansheng/637402596442144929/6544844.png"></div><p> 可調(diào)光至1%的燈亮度。可在任意調(diào)光設(shè)定值下啟動(dòng)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(jià)格合理和調(diào)光功率控制范圍寬的優(yōu)點(diǎn)，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(huì)產(chǎn)生熒光燈啟動(dòng)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。安徽LED市場價(jià)上海先盛照明電器有限公司致力于提供LED，有想法的可以來電咨詢！</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="河北官方LED量大從優(yōu),LED" src="https://tyunfile.71360.com/WaterMark/UploadFile/shxiansheng/637402595791627408/1170035.png"></div><p>月亮在地屏水面上的倒影隨著月亮同步移動(dòng)，虛實(shí)相生、形成了韻味無窮的詩意空間。同時(shí)圓屏里的樹經(jīng)過裸眼3D的立體設(shè)計(jì)，將整個(gè)畫面襯托的簡潔輕盈，非常生動(dòng)。突破了虛實(shí)邊界，打破了二維空間，更加體現(xiàn)了整個(gè)舞臺(tái)的空間感。創(chuàng)顯光電的LED沉浸式魔幻森林創(chuàng)顯光電為美國俄克拉荷馬州杜蘭特的喬克托度假村ChoctawCasinoResort打造了美國較早數(shù)字藝術(shù)項(xiàng)目。整個(gè)魔幻森林?jǐn)?shù)字項(xiàng)目使用數(shù)字藝術(shù)、LED創(chuàng)意顯示屏、燈光等技術(shù)，并將聲音裝置融合在一起，創(chuàng)造了一種全新的沉浸式體驗(yàn)，同時(shí)重視藝術(shù)與自然及人之間的關(guān)系，建立起奇妙的人與環(huán)境之間溝通的“橋梁”，就像原始大自然在緩緩敘述其中的故事一般，人與自然和諧相處。顧客在度假村的各個(gè)區(qū)域之間穿梭猶如穿過一片原始森林。10月的LED顯示屏眾多，所以經(jīng)典案例也是數(shù)不勝數(shù)，以上*列舉10月比較具有性的案例，不包含全部。上述的案例，規(guī)模之龐大、創(chuàng)意之新穎、技術(shù)之融合等都具有作用，更能為日后行業(yè)的更為多樣化的LED顯示屏項(xiàng)目提供榜樣作用。我國LED顯示屏市場龐大，且要求較為多樣化，經(jīng)由我國LED屏企的努力，我國已經(jīng)延伸出LED軟膜組、地磚屏以及各類異形屏等產(chǎn)品。</p><p>LED路燈與常規(guī)路燈不同的是，LED光源采用低壓直流供電、由GaN基功率型藍(lán)光LED與黃色合成的高效白光，LED路燈是指用LED燈具制作的路燈，具有高效、安全、節(jié)能、環(huán)保、壽命長、響zhi應(yīng)速度快、顯色指數(shù)高等優(yōu)點(diǎn)，對城市節(jié)能照明具有十分重要的意義。優(yōu)點(diǎn)1、LED路燈本身的特性——光的單向性，沒有光的漫射，可以很好的保證光照效率。LED體積小，重量輕，采用環(huán)氧樹脂封裝，不*可以保護(hù)內(nèi)部芯片，還具有聚光透光的能力，其使用壽命大多在50000-100000小時(shí)之間。2、獨(dú)特的二次光學(xué)設(shè)計(jì)，將光照射到所需照明的區(qū)域，進(jìn)一步提高了光照效率，以達(dá)到節(jié)能目的。3、LED的已達(dá)110-130lm/W，很大的發(fā)展空間，理論值達(dá)360lm/W。高壓鈉燈的發(fā)光效率是隨功率增加才會(huì)有所增加，總體光效LED路燈比高壓鈉燈強(qiáng)；(這個(gè)總體光效是理論上的，實(shí)際上250W以上高壓鈉燈的光效高于LED燈）。4、LED路燈的光顯色性比高壓鈉燈高許多，高壓鈉燈顯色指數(shù)只有23左右，而LED路燈顯色指數(shù)達(dá)到75以上，從視覺心理角度考慮，達(dá)到同等亮度。5、光衰小，一年的光衰不到3%，使用10年仍達(dá)到道路要求，而高壓鈉燈光衰大，一年左右已經(jīng)下降30%以上，因此，LED路燈在使用功率的設(shè)計(jì)上可以比高壓鈉燈低。上海先盛照明電器有限公司是一家專業(yè)提供LED的公司，有想法的可以來電咨詢！</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="河北官方LED量大從優(yōu),LED" src="https://tyunfile.71360.com/WaterMark/UploadFile/shxiansheng/637402597688014041/4313419.png"></div><p> 本篇文章介紹如何判斷燈珠類型，燈珠的串并數(shù)，以及判斷燈珠板的額定輸入電壓和電流；另外，還介紹了市面上常見的LED驅(qū)動(dòng)器的類型，參數(shù)規(guī)格，以及如何配套好你想要的燈珠板。LED燈珠LED燈珠的類型，從草帽燈珠，食人魚這些都已經(jīng)消失的封裝開始，到SMD，COB，CSP，日新月異，還需要適時(shí)補(bǔ)充。LED燈珠的組成LED燈珠由以下幾個(gè)部分組成：晶片，基板支架，導(dǎo)線，熒光粉，光學(xué)透鏡，支架塑料，如下圖：也有CSP就是沒有導(dǎo)線的對比，如：發(fā)光原理從物理學(xué)角度來理解：當(dāng)電流通過晶片時(shí)，N型半導(dǎo)體內(nèi)的電子與P型半導(dǎo)體內(nèi)的空穴在發(fā)光層劇烈地碰撞復(fù)合產(chǎn)生光子，以光子的形式發(fā)出能量（即大家看見的光）。不同材料的半導(dǎo)體會(huì)產(chǎn)生不同顏色的光色，如紅光、綠光、藍(lán)光等等。所以，沒有熒光粉的，直接就是晶片本身發(fā)光顏色，一般彩色燈珠都是這種類型。但是，到目前為止還沒有任何一種半導(dǎo)體材料能發(fā)出白色的光。這里就需要提到一位諾貝爾獎(jiǎng)獲得者——中村修二博士。他發(fā)明出了藍(lán)光LED，由此也為白光LED奠定了一定的基礎(chǔ)。基于這項(xiàng)重大的貢獻(xiàn)在2014年授予他諾貝爾物理學(xué)獎(jiǎng)。至于藍(lán)光LED是如何轉(zhuǎn)變?yōu)榘坠釲ED，大的原因在于晶片中多了一層熒光粉。上海先盛照明電器有限公司致力于提供LED，有需求可以來電咨詢！河北官方LED量大從優(yōu)</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。河北官方LED量大從優(yōu)</p><p style="text-indent:25px">脈沖調(diào)頻調(diào)光法脈沖調(diào)頻調(diào)光法（PFM）也是常用的調(diào)光方法。如果高頻交流電子鎮(zhèn)流器的開關(guān)工作頻率增加，則鎮(zhèn)流電感的阻抗增加，這樣流過鎮(zhèn)流電感的電流就會(huì)下降，導(dǎo)致流過燈負(fù)載的電流下降，從而實(shí)現(xiàn)調(diào)光。圖2為4英尺40W熒光燈脈沖調(diào)頻調(diào)光法的調(diào)光特性曲線（脈沖占空比D=0.45）脈沖調(diào)頻調(diào)光法的局限性。調(diào)光范圍由調(diào)頻范圍決定，如果調(diào)頻范圍不大，則熒光燈功率調(diào)節(jié)范圍也不大。為了實(shí)現(xiàn)在低熒光燈燈功率工作條件下實(shí)現(xiàn)調(diào)光，則調(diào)頻范圍應(yīng)很寬（即從25~50kHz）。河北官方LED量大從優(yōu)</p></p><br /><p>文章來源地址: http://m.cdcfah.com/cp/2156268.html</p></div></div></div></div></div><div id="vkczjv3" class="page-right twoColRt"><div id="edk7p2g" class="box01 margin10 clearfix"><h3><a href="http://m.cdcfah.com/cp/">猜你喜歡</a></h3><div id="ynfx7df" 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(qiáng) 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