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onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="3ecub2f" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/shxiansheng/637269781968994141/3260429.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="a6w7ct2" 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)品關鍵詞：</span>浙江大功率投光燈鎮(zhèn)流器,投光燈</p><p><span>***更新：</span>2020-12-24 00:17:11</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="pbn8dkb" 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="zo3jqs7" class="page-proshow02"><p class="title">詳細說明</p><div id="aeokmtv" class="box"><p><p style="text-indent:25px">而效率(y則是輸出功率和輸入功率的比值，即輸出功率(輸出LED的電壓*輸出電流/輸入功率，浙江大功率投光燈鎮(zhèn)流器，這個參數(shù)尤為重要，涉及到產(chǎn)品和用戶的利益，如果效率低就意味著輸入功率有很大一部分轉(zhuǎn)化為熱量散發(fā)出來;如果是裝在燈管內(nèi)就會產(chǎn)生一個很高的溫度，再加.上我們LED的一個光效比所散發(fā)熱.量，就會疊加產(chǎn)生更高的溫度。而我們的電源內(nèi)部所有電子零件的壽命都會隨溫度的上升而縮短，浙江大功率投光燈鎮(zhèn)流器.效率高，轉(zhuǎn)化成光的效率就高，而且電源和燈管的發(fā)熱就會減少，相當于省電，產(chǎn)品性能和壽命會提高。所以說效率是決定電源壽命zui根本的因數(shù)，效率不能太低，否則消耗在電源上的熱量太大。一般在0.8-0.9以上就可以了。功率因素，效率這兩個指標有時會失效率：由于全彩顯示屏由上萬甚至幾十萬組紅，浙江大功率投光燈鎮(zhèn)流器、綠、藍三種LED組成的像素點組成。浙江大功率投光燈鎮(zhèn)流器</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="浙江大功率投光燈鎮(zhèn)流器,投光燈" src="https://tyunfile.71360.com/WaterMark/UploadFile/shxiansheng/637269781968994141/3260429.png"></div><p style="text-indent:25px">下面將以某公司的這款太陽能LED大功率路燈為例，分幾個方面做分析。2.1太陽能電池組件選型設計要求:廣州地區(qū)，負載輸入電壓24V功耗34.5W，每天工作時數(shù)8.5h，保證連續(xù)陰雨天數(shù)7天。(I)廣州地區(qū)近二十年年均輻射量107.7Kcal/cm2，經(jīng)簡單計算廣州地區(qū)峰值日照時數(shù)約為3.424h;(2)負載日耗電量== 12.2AI)所需太陽能組件的總充電電流=1.05×12.2×÷（3.424×0.85）=5.9A在這里，兩個連續(xù)陰雨天數(shù)之間的設計zui短天數(shù)為20天，1.05為太陽能電池組件系統(tǒng)綜合損失系數(shù)，0.85為蓄電池充電效率。浙江大功率投光燈鎮(zhèn)流器衰減特性：LED顯示屏長時間工作后會出現(xiàn)亮度下降和顯示屏顏色不一致的現(xiàn)象。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="浙江大功率投光燈鎮(zhèn)流器,投光燈" src="https://tyunfile.71360.com/WaterMark/UploadFile/shxiansheng/637269781305722656/5520519.png"></div><p> 投光燈是指定被照面上的照度高于周圍環(huán)境的燈具。又稱聚光燈。通常，它能夠瞄準任何方向，并具備不受氣候條件影響的結構。主要用于大面積作業(yè)場礦、建筑物輪廓、體育場、立交橋、紀念碑、公園和花壇等。因此，幾乎所有室外使用的大面積照明燈具都可看作投光燈。投光燈的出射光束角度有寬有窄，變化范圍在0°～180°之間，其中光束特別窄的稱為探照燈。投光燈由光學部件、機械部件和電氣部件3部分組成。光學部件主要是反射器和限制光線投光燈的遮光格片。機械部件主要是外殼，以及固定和調(diào)整光源位置的調(diào)焦機構，固定燈具的支架、基座和帶有角度指示的調(diào)整燈具光束投射方向的零件。對絕大部分為密閉式的投光燈，機械部件還有保護玻璃及各種密封圈。根據(jù)使用環(huán)境的需要，有的還帶有金屬網(wǎng)罩。性能良好的投光燈還配有空氣過濾器。電氣部件主要是鎮(zhèn)流器、電容器、觸發(fā)器（根據(jù)光源需要而設）等。 </p><p style="text-indent:25px">比紅光波長長的光為紅外光?，F(xiàn)在已有紅外、紅、黃、綠及藍光發(fā)光二極管，但其中藍光二極管成本、價格很高, 使用不普遍。LED的調(diào)光控制傳統(tǒng)上，LED的調(diào)光是利用一個DC信號或濾液PWM對LED中的正向電流進行調(diào)節(jié)來完成的。減小LED電流將起到調(diào)節(jié)LED光輸出強度的作用，然而，正向電流的變化也會改變LED的彩色,因為LED的色度會隨著電流的變化而變化。許多應用(例如汽車和LCD TV背光照明)都不能允許LED發(fā)生任何的色彩漂移。在這些應用中，由于周圍環(huán)境中存在不同的光線變化，而且人眼對于光強的微小變化都很敏感，因此寬范圍調(diào)光是必需的。首先我們可以先檢查一下，led燈珠是否因供電電源部分的原因而沒有正常工作導致燈珠不亮。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="浙江大功率投光燈鎮(zhèn)流器,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簡便的方法是在LED驅(qū)動控制C中使用外部SET電阻來實現(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度。線性調(diào)節(jié)則會降低效率，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,但可在敏感應用中檢測出。采用數(shù)字或叫PWM的LED調(diào)光控制法以大于100HZ的開關工作頻率，以脈寬調(diào)制的方法改變LED驅(qū)動電流的脈沖占空比來實理LED的調(diào)光控制，選用大于100HZ開關調(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>如果是，可檢查電源線路，一般電源正常的話，led燈珠接上去上面的指標燈會亮的。浙江大功率投光燈鎮(zhèn)流器</p><p style="text-indent:25px">針對不同點間距和不同視距的顯示屏，應在亮度、角度和價格上找到一個平衡點。浙江大功率投光燈鎮(zhèn)流器</p><p style="text-indent:25px">LED日光燈優(yōu)缺點點評 zui近以來，led日光燈成為zui早進入室內(nèi)的LED燈具之一，因為它相對于熒光燈來說具有很多優(yōu)點。一．優(yōu)點相對于熒光燈來說，led日光燈具有**優(yōu)點:1.發(fā)光效率高:熒光燈的發(fā)光效率大約是55-80 lm/W (Philips公司T8熒光燈的發(fā)光效率為72lm/W)，而LED的發(fā)光效率在100 lm/W以上，zui近Cree公司的XLampXP-G的發(fā)光效率已經(jīng)到130流明/W，而且以后還會不斷提升。二者之差現(xiàn)在已經(jīng)將近一倍。而以后有可能達到3倍以上。2.燈具效率高:燈具的效率主要是指有效光效，因為熒光燈是360浙江大功率投光燈鎮(zhèn)流器</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/2531249.html</p></div></div></div></div></div><div id="ptv8bdk" class="page-right twoColRt"><div id="xhovc2r" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="bqxzlsj" class="recomPic likePro"><a href="http://www.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" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></div><p>福建ZF配件哪家強信息推薦自業(yè)物資供應</p></a></div><div id="jtacoln" class="recomPic likePro"><a 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