河南led投光燈廠家歡迎咨詢上海先盛照明電器供應(yīng)-b2b網(wǎng)站_b2b電子商務(wù)平臺(tái)【買產(chǎn)品】-上?？谄蚴称酚邢薰?/title><meta name="description" content="一般金的導(dǎo)電率比較好，銀次之。在焊接工藝時(shí)，由于焊接實(shí)際上是形成合金的過程，這個(gè)合金本身就是良導(dǎo)體，所以焊接本身的可靠性是比較高的，除非是焊接不良。但是，連接器之間的連接，靠的是表面之間的接觸，所以容易導(dǎo)致接觸不良，更具體的原因分析如下，河"><meta name="keywords" content="河南led投光燈廠家,投光燈"><link rel="canonical" href="http://www.cdcfah.com/"/><meta name="applicable-device" content="pc"><link rel="shortcut icon" href="/static/new_net_01/images/favicon.ico"><link rel="stylesheet" href="/static/new_net_01/css/slick.css" /><link rel="stylesheet" href="/static/new_net_01/css/addnew.css"><link rel="stylesheet" href="/static/new_net_01/css/sidenav.css"><link rel="stylesheet" href="/static/new_net_01/css/style.css" /><link rel="stylesheet" href="/static/new_net_01/css/tab.css"><link rel="stylesheet" href="/static/new_net_01/css/404.css"> <meta name="baidu-site-verification" content="OBVzrC9aaQ" /> <meta http-equiv="Cache-Control" content="no-transform" /> <meta 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id="kqe02mk" class="proBig"><div id="0ymki0c" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/shxiansheng/637269781613906250/8543994.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="o0ksyuo" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/shxiansheng/637269781613906250/8543994.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="agek0g0" 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>河南led投光燈廠家,投光燈</p><p><span>***更新：</span>2021-02-03 01:07:33</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="eagwkyu" 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="qwua0qs" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="uaqes2i" class="box"><p><p style="text-indent:25px">一般金的導(dǎo)電率比較好，銀次之。在焊接工藝時(shí)，由于焊接實(shí)際上是形成合金的過程，這個(gè)合金本身就是良導(dǎo)體，所以焊接本身的可靠性是比較高的，除非是焊接不良。但是，連接器之間的連接，靠的是表面之間的接觸，所以容易導(dǎo)致接觸不良，更具體的原因分析如下，河南led投光燈廠家。兩個(gè)金屬表面之間的接觸是否良好，主要取決于材料（不同金屬導(dǎo)電率不同)、接觸壓力，河南led投光燈廠家、實(shí)際接觸面結(jié)。關(guān)于材料種類，河南led投光燈廠家，上面已經(jīng)提到了，一般器件的鍍層材料，基本上都是由良導(dǎo)體做的，對(duì)接觸不良的影響不大。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°;河南led投光燈廠家</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="河南led投光燈廠家,投光燈" src="https://tyunfile.71360.com/WaterMark/UploadFile/shxiansheng/637269781613906250/8543994.png"></div><p style="text-indent:25px">LED三防燈的特長(zhǎng) 顏色豐富:有正白光、曖白光、紅、綠、藍(lán)等各種顏色，無論是客廳里大燈旁用于點(diǎn)綴的小彩燈還是霓虹燈，都很鮮艷。發(fā)熱量低:像射燈，很多220V的射燈用不也幾天就壞掉就是因?yàn)榘l(fā)熱。12V 鹵素射燈發(fā)熱量雖低于220V的射燈，但又有因所配變壓器功率不足等原因，其亮度達(dá)不到標(biāo)稱值。用LED射燈，不用變壓器也可以長(zhǎng)時(shí)間工作缺點(diǎn):開發(fā)成本較高。價(jià)格相對(duì)傳統(tǒng)燈來說價(jià)格較貴!但是LED作為--種新型的綠色光源產(chǎn)品，必然是未來發(fā)展的趨勢(shì)，21世紀(jì)將進(jìn)入以LED為**的新型照明光源時(shí)代。遼寧led戶外投光燈這種情況也容易造成LED燈珠使用一段時(shí)間后死燈。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="河南led投光燈廠家,投光燈" src="https://tyunfile.71360.com/WaterMark/UploadFile/shxiansheng/637269781305722656/5520519.png"></div><p style="text-indent:25px">土壤濕接地電阻較容易達(dá)到，秋冬季干燥土壤水分少，接地電阻就有可能超過規(guī)定數(shù)值，作記錄是為了保存原始數(shù)據(jù)，做到日后有據(jù)可查。符合ISO2000質(zhì)量管理體系。測(cè)試接地電阻可以自行設(shè)計(jì)表格，接地電阻測(cè)試封裝企業(yè)、LED應(yīng)用企業(yè)都要做，只要將各種設(shè)備名稱填于表格內(nèi)，測(cè)出各設(shè)備的接地電阻記錄在案，測(cè)試人簽名即可存檔。人體靜電對(duì)LED的損害也是很大的，工作時(shí)應(yīng)穿防靜電服裝，配帶靜電環(huán)，靜電環(huán)應(yīng)接地良好，有一種不須要接地的靜電環(huán)防靜電的效果不好</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(zhǔn)任何方向，并具備不受氣候條件影響的結(jié)構(gòu)。主要用于大面積作業(yè)場(chǎng)礦、建筑物輪廓、體育場(chǎng)、立交橋、紀(jì)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[1]由光學(xué)部件、機(jī)械部件和電氣部件3部分組成。光學(xué)部件主要是反射器和限制光線投光燈的遮光格片。機(jī)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(jī)構(gòu)，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(duì)絕大部分為密閉式的投光燈，機(jī)械部件還有保護(hù)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(shè)）等。壽命：LED器件的理論壽命為10萬小時(shí)，遠(yuǎn)大于LED顯示屏其它部件的工作壽命。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="河南led投光燈廠家,投光燈" src="https://tyunfile.71360.com/WaterMark/UploadFile/shxiansheng/637269781175878906/6687908.png"></div><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，這個(gè)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(huì)產(chǎn)生一個(gè)很高的溫度，再加.上我們LED的一個(gè)光效比所散發(fā)熱.量，就會(huì)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(huì)隨溫度的上升而縮短.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(huì)減少，相當(dāng)于省電，產(chǎn)品性能和壽命會(huì)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(gè)指標(biāo)有時(shí)會(huì)主要是由于LED器件的亮度衰減造成的。江西專業(yè)投光燈燈具</p><p style="text-indent:25px">焊接時(shí)間過長(zhǎng)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。河南led投光燈廠家</p><p style="text-indent:25px">這些要求都為電子行業(yè)的人們所熟悉，關(guān)健是在實(shí)際執(zhí)行時(shí)是否到位，是否有記錄。據(jù)筆者了解一般的民營(yíng)企業(yè)，防靜電措施做得并不到位，這就是大多數(shù)企業(yè)查不到接地電阻的測(cè)試記錄，即使做了接地電阻測(cè)試也是一年一次，或幾年一次，或有問題時(shí)檢查一下接地電阻，殊不知接地電阻測(cè)試這是一項(xiàng)很重要的工作，每年至少4次（每季度測(cè)試一次），一些要求高的地方，每月就要作一次接地電阻測(cè)試。土壤電阻會(huì)隨著季節(jié)的變化而不同，春夏天雨水多河南led投光燈廠家</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/3130378.html</p></div></div></div></div></div><div id="8kg2m80" class="page-right twoColRt"><div id="qeaoei0" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="8uaekyc" 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(qiáng) 信息推薦自業(yè)物資供應(yīng)" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></div><p>福建ZF配件哪家強(qiáng) 信息推薦自業(yè)物資供應(yīng)</p></a></div><div id="wu8wu0k" class="recomPic likePro"><a 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