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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>戶外投光燈性能,投光燈</p><p><span>***更新：</span>2020-10-14 09:09:43</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="ygyjfrf" 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="luqhs32" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="8hvlhom" class="box"><p><p style="text-indent:25px">流明，而LED的發(fā)光效率已經(jīng)超過130lm/W，假定為100lm/W，那么18W就可以達(dá)到1800流明，也就是只要熒光燈一半的功率就可以有相同的亮度。而且LED的發(fā)光效率還在逐年升高。3.電源效率高因?yàn)樗袩艟叱谉霟粢酝舛际切枰袑ｉT的電源供電的，電源的效率也就影響了整個(gè)燈具的效率。下面以Philips公司的36WT8熒光燈為例。它的額定輸出功率為36W，但是由于接入了電感鎮(zhèn)流器，戶外投光燈性能，實(shí)測(cè)輸入功率為42. 4W，也就是鐵芯電感損耗了6.4W，戶外投光燈性能,效率降低為85%，大多數(shù)國(guó)產(chǎn)的鐵芯電感功耗在10W以上功率因素低于0，戶外投光燈性能.512。而LED的電源效率通常高達(dá)90%，--個(gè)18W的LED日光燈只要20W的輸入功率。功率因素也可以達(dá)到0.9以上。垂直視角50°;的橢圓LED，戶內(nèi)顯示屏則選用水平垂直均為120°;戶外投光燈性能</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="戶外投光燈性能,投光燈" src="https://tyunfile.71360.com/WaterMark/UploadFile/shxiansheng/637269781175878906/6687908.png"></div><p style="text-indent:25px">線性調(diào)節(jié)zui簡(jiǎn)便的方法是在LED驅(qū)動(dòng)控制C中使用外部SET電阻來實(shí)現(xiàn)LED的調(diào)光控制。雖然，這種調(diào)光控制方法有效，但卻缺乏靈活性，無法讓用戶改變光強(qiáng)度。線性調(diào)節(jié)則會(huì)降低效率，并引起白光LED朝向黃色光譜的色彩偏移?？赡苁禽p微的偏移,但可在敏感應(yīng)用中檢測(cè)出。采用數(shù)字或叫PWM的LED調(diào)光控制法以大于100HZ的開關(guān)工作頻率，以脈寬調(diào)制的方法改變LED驅(qū)動(dòng)電流的脈沖占空比來實(shí)理LED的調(diào)光控制，選用大于100HZ開關(guān)調(diào)光控制頻率主要是為了避免人眼感覺到調(diào)光閃爍現(xiàn)象，在LED的PWM調(diào)光控制下。<span style="display:none;"><span style="display:none;"><span style="display:none;"><span style="display:none;"><span style="display:none;"><span style="display:none;"><span style="display:none;"><span style="display:none;"></span></span></span></span></span></span></span></span>戶外投光燈性能LED亮度越高，使用電流的余量越大，對(duì)節(jié)省耗電、保持LED穩(wěn)定有好處。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="戶外投光燈性能,投光燈" src="https://tyunfile.71360.com/WaterMark/UploadFile/shxiansheng/637269781652041016/5513893.png"></div><p style="text-indent:25px"><span style="display:none;"></span>雖然功率不大的單個(gè)用電器功率因素低一點(diǎn)對(duì)電網(wǎng)的影響不大，但晚上大家點(diǎn)燈，同類負(fù)載太集中，會(huì)對(duì)電網(wǎng)產(chǎn)生較嚴(yán)重的污染。對(duì)于30瓦~40瓦的LED驅(qū)動(dòng)電源，據(jù)說不久的將來，也許會(huì)對(duì)功率因素方面有一定的指標(biāo)要求。4. 驅(qū)動(dòng)方式現(xiàn)在通行的有兩種:其一是一個(gè)恒壓源供多個(gè)恒流源，每個(gè)恒流源單獨(dú)給每路LED供電。這種方式，組合靈活，一路LED故障，不影響其他LED的工作，但成本會(huì)略高-一點(diǎn)。另一種是直接恒流供電，LED串聯(lián)或并聯(lián)運(yùn)行。它的優(yōu)點(diǎn)是成本低一點(diǎn)，但靈活性差，還要解決某個(gè)LED故障，不影響其他LED運(yùn)行的問題。這兩種形式，在-段時(shí)間內(nèi)并存。<span style="display:none;"><span style="display:none;"></span></span></p><p style="text-indent:25px">LED手電簡(jiǎn) 發(fā)光二極管是由III-IV族化合物，如GaAs (砷化鎵)、GaP (磷化鎵)、<span style="display:none;"></span>GaAsP<span style="display:none;"></span>(磷砷化鎵)等半導(dǎo)體制成的，其**是PN結(jié)。因此它具有一般P-N結(jié)的I-N特性，即正向?qū)?，反向截止、擊穿特性。此外，? -定條件下，它還具有發(fā)光特性。在正向電壓下，電子由N區(qū)注入P區(qū)，空穴由P區(qū)注入N區(qū)。進(jìn)入對(duì)方區(qū)域的少數(shù)載流子(少子)一部分與多數(shù)載流子(多子)復(fù)合而發(fā)光，假設(shè)發(fā)光是在 P區(qū)中發(fā)生的，那么注入的電子與價(jià)帶空穴直接復(fù)合而發(fā)光，或者先被發(fā)光中心捕獲后，再與空穴復(fù)合發(fā)光。從LED器件把關(guān)，促進(jìn)中國(guó)由LED顯示屏制造大國(guó)向LED顯示屏制造強(qiáng)國(guó)的轉(zhuǎn)變。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="戶外投光燈性能,投光燈" src="https://tyunfile.71360.com/WaterMark/UploadFile/shxiansheng/637269782155068360/7868258.png"></div><p style="text-indent:25px">我們要為太陽能電池組件選擇一個(gè)zui佳傾角。關(guān)于太陽能電池組件zui佳傾角問題的探討，近年來在一些學(xué)術(shù)刊物上出現(xiàn)得不少。本次路燈使用地區(qū)為廣州地區(qū)，依據(jù)本次設(shè)計(jì)參考相關(guān)文獻(xiàn)中的資料[1]，選定太陽能電池組件支架傾角為160。2.3.2抗風(fēng)設(shè)計(jì)在太陽能路燈系統(tǒng)中，結(jié)構(gòu)上一個(gè)需要非常重視的問題就是抗風(fēng)設(shè)計(jì)。抗風(fēng)設(shè)計(jì)主要分為兩大塊，一為電池組件支架的抗風(fēng)設(shè)計(jì)，二為燈桿的抗風(fēng)設(shè)計(jì)。下面按以上兩塊分別做分析。(1)太陽能電池組件支架的抗風(fēng)設(shè)計(jì)依據(jù)電池組件廠家的技術(shù)參數(shù)資料，太陽能電池組件可以承受的迎風(fēng)壓強(qiáng)為2700Pa。主要是由于LED器件的亮度衰減造成的。浙江led投光燈廠家</p><p style="text-indent:25px">***的LED器件能夠很好地控制亮度衰減幅度。戶外投光燈性能</p><p style="text-indent:25px">頂多影響接觸電阻（當(dāng)然更進(jìn)一步來說還影響到了是否容易被氧化)，所以不再更詳細(xì)地討論。關(guān)于連接器的接觸壓力，連接器靠的是孔接觸件的彈力來給針接觸件一定的壓力的。一般壓力越大接觸得也越好。當(dāng)然，一般小而又薄的孔接觸件是不太可能提供特大的壓力的。而且如果這個(gè)孔接觸件本身的彈性不好，頂多影響接觸電阻（當(dāng)然更進(jìn)一步來說還影響到了是否容易被氧化)，所以不再更詳細(xì)地討論。關(guān)于連接器的接觸壓力，連接器靠的是孔接觸件的彈力來給針接觸件一定的壓力的。一般壓力越大接觸得也越好。當(dāng)然，一般小而又薄的孔接觸件是不太可能提供特大的壓力的。而且如果這個(gè)孔接觸件本身的彈性不好戶外投光燈性能</p><p style="text-indent:25px">上海先盛照明電器有限公司總部位于陶干路1199號(hào)，是一家照明電器、五金交電、勞防用品、機(jī)電設(shè)備批發(fā)零售；照明電器設(shè)計(jì)、安裝。的公司。上海先盛照明作為照明電器、五金交電、勞防用品、機(jī)電設(shè)備批發(fā)零售；照明電器設(shè)計(jì)、安裝。的企業(yè)之一，為客戶提供良好的投光燈，三防燈，筒射燈，燈管。上海先盛照明始終以本分踏實(shí)的精神和必勝的信念，影響并帶動(dòng)團(tuán)隊(duì)取得成功。上海先盛照明始終關(guān)注照明工業(yè)行業(yè)。滿足市場(chǎng)需求，提高產(chǎn)品價(jià)值，是我們前行的力量。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/1549304.html</p></div></div></div></div></div><div id="2fb38w3" class="page-right twoColRt"><div id="jc8hdev" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="cub7plw" class="recomPic 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