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class="proBig"><div id="qpc7yb3" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/shxiansheng/637269781071572266/5060107.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="3yvczgd" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/shxiansheng/637269781071572266/5060107.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="tsph8np" 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>重慶防水投光燈鎮(zhèn)流器,投光燈</p><p><span>***更新：</span>2021-01-24 09:07:25</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="3jld88p" 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="ktvxevx" class="page-proshow02"><p class="title">詳細說明</p><div id="laczbi2" class="box"><p><p style="text-indent:25px">燈桿破壞面抵抗矩W的計算點Р到燈桿受到的電池板作用荷載F作用線的距離為PQ=[5000+168+6）/tan16o]x Sin16o = 1545mm =1.545m所以，風荷載在燈桿破壞面上的作用矩M = F1.545。根據(jù)27m/s的設計zui大允許風速，2×30W的雙燈頭太陽能路燈電池板的基本荷載為730N?？紤]1.3的安全系數(shù)，F(xiàn)= 1.330 = 949N所以，M= F1.545 = 9491.545 = 1466N.m根據(jù)數(shù)學推導，圓環(huán)形破壞面的抵抗矩W= 幾×(3r2o＋3r62＋83）。上式中，重慶防水投光燈鎮(zhèn)流器，r是圓環(huán)內(nèi)徑，à是圓環(huán)寬度。破壞面抵抗矩W= T×(3r26+3r62+63）一T×（3×842×4十3×84×42＋43）= 88768mm3 =88.76810一6 m3風荷載在破壞面上作用矩引起的應力=M/W= 1466188.768×10一6）=16.5106pa =16.5 Mpa<215Mpa其中，215Mpa是Q235鋼的抗彎強度，重慶防水投光燈鎮(zhèn)流器。<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 style="display:none;"><span style="display:none;"></span></span></span></span></span></span></span></span></span></span>3528型貼片LED主要用于P6，重慶防水投光燈鎮(zhèn)流器、P8的戶內(nèi)顯示屏，2020型貼片LED主要用于P2、P3等室內(nèi)顯示屏。重慶防水投光燈鎮(zhèn)流器</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="重慶防水投光燈鎮(zhèn)流器,投光燈" src="https://tyunfile.71360.com/WaterMark/UploadFile/shxiansheng/637269781071572266/5060107.png"></div><p style="text-indent:25px">按發(fā)光強度和工作電流分―按發(fā)光強度和工作電流分有普通亮度的LED（發(fā)光強度100mcd）;把發(fā)光強度在10～100mcd間的叫高亮度發(fā)光二極管。一般LED的工作電流在十幾mA至幾十mA，而低電流LED的工作電流在2mA 以下（亮度與普通發(fā)光管相同）。除上述分類方法外，還有按芯片材料分類及按功能分類的方法。LED應用于路燈有先天優(yōu)勢和劣勢一、優(yōu)勢在于:第一，LED作為點光源，如果設計合理，很大程度上可以直接解決傳統(tǒng)球狀光源必須依靠光發(fā)射來解決的二次取光及光損耗問題;―第二，對光照射面的均勻度可控。河北白光投光燈led如存在不正確操作引起燈珠不亮，則重新焊接led燈珠一般即可解決。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="重慶防水投光燈鎮(zhèn)流器,投光燈" src="https://tyunfile.71360.com/WaterMark/UploadFile/shxiansheng/637269782039189453/4436063.png"></div><p style="text-indent:25px">頂多影響接觸電阻（當然更進一步來說還影響到了是否容易被氧化)，所以不再更詳細地討論。關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。而且如果這個孔接觸件本身的彈性不好，頂多影響接觸電阻（當然更進一步來說還影響到了是否容易被氧化)，所以不再更詳細地討論。關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。而且如果這個孔接觸件本身的彈性不好</p><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。尺寸：LED器件的尺寸影響LED顯示屏的像素點距離，即分辨率。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="重慶防水投光燈鎮(zhèn)流器,投光燈" src="https://tyunfile.71360.com/WaterMark/UploadFile/shxiansheng/637269781495341797/4514745.png"></div><p style="text-indent:25px">封裝企業(yè)如果不嚴格按接地規(guī)程辦事，吃虧的是企業(yè)自己，將造成產(chǎn)品合格率下降，減少企業(yè)的經(jīng)濟效益，同樣應用LED的企業(yè)如果設備和人員接地不良的話也會造成LED的損壞，返工在所難免。按照LED標準使用手冊的要求，LED的引線距膠體應不少于3-5毫米，進行彎腳或焊接，但大多數(shù)應用企業(yè)都沒有做到這一點，而只是相隔一塊PCB板的厚度（≤2毫米）就直接焊接了，這也會對LED造成損害或損壞，因為過高的焊接溫度會對芯片產(chǎn)生影響，會使芯片特性變壞，降低發(fā)光效率，甚至損壞LED亮度：LED亮度是顯示屏亮度的重要決定因素。河北白光投光燈led</p><p style="text-indent:25px">焊接時間過長造成的led燈珠不亮，如果是，解決辦法:用松香助焊劑，解決LED引腳不易上錫的問題。重慶防水投光燈鎮(zhèn)流器</p><p style="text-indent:25px">建議不使用配帶該種產(chǎn)品，如果工作人員違反操作規(guī)程，則應接受相應的警示教育，同時也起到告示他人的作用。人體帶靜電的多少，與人穿的不同面料衣服、及各人的體質(zhì)有關，秋冬季黑夜我們脫衣服就很容易看見衣服之間的放電現(xiàn)象，這種靜電放電的電壓就有三千伏。碳化硅襯底芯片的ESD值只有1100伏，藍寶石襯底芯片的ESD值就更低，只有500-600伏。一個好的芯片或LED,如果我們用手去拿（身體未作任何防護措施），其結果就可想而知了，芯片或LED將受到不同程度的損害，有時一個好的器件經(jīng)過我們的手就莫名其妙的壞了，這就是靜電惹的禍。重慶防水投光燈鎮(zhèn)流器</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/2988176.html</p></div></div></div></div></div><div id="yce3kf7" class="page-right twoColRt"><div id="j8tvszb" class="box01 margin10 clearfix"><h3><a 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