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clearfix"><section class="container clearfix tcPro"><section class="home-main container clearfix"><div id="n99ppd9" class="twoCol"><div id="nbhp75r" class="page-proshow clearfix"><p class="current"> 當(dāng)前位置:<a href="http://www.cdcfah.com/">首頁(yè)?<a href="http://www.cdcfah.com/cp/">產(chǎn)品供應(yīng)</a>?<a href="http://www.cdcfah.com/cp/first-_zmgy/">照明工業(yè)</a>?<a href="http://www.cdcfah.com/cp/second-zmgy_snzmdjeh/">室內(nèi)照明燈具</a>?<a href="http://www.cdcfah.com/cp/third-snzmdjeh_tongdengwa/">筒燈</a>?白光投光燈批發(fā) 歡迎來(lái)電上海先盛照明電器供應(yīng)</p><div id="fdbzvl5" class="leftbox clearfix"><h1>白光投光燈批發(fā) 歡迎來(lái)電上海先盛照明電器供應(yīng)</h1><div id="v77pndr" class="proBig"><div id="7vb9brx" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/shxiansheng/637269781806748047/1466494.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="zftz95n" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/shxiansheng/637269781806748047/1466494.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="hn9brnb" 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>白光投光燈批發(fā),投光燈</p><p><span>***更新：</span>2021-01-30 11:10:56</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="xv5hftj" 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="vtjx7b7" class="page-proshow02"><p class="title">詳細(xì)說(shuō)明</p><div id="7n7rxvb" class="box"><p><p style="text-indent:25px">通過(guò)施加一個(gè)PWM信號(hào)來(lái)控制LED亮度的做法允許不改變彩色的情況下完成LED的調(diào)光。人們常說(shuō)的真正彩色(TrueColor)PWM調(diào)光是利用-一個(gè)PWM信號(hào)來(lái)調(diào)節(jié)LED的亮度。調(diào)節(jié)LED亮度有三種常用方法:(1)使用SET電阻，在LED驅(qū)動(dòng)控制IC引腳RSET兩端并聯(lián)不同的轉(zhuǎn)換電阻，使用一個(gè)直流電壓設(shè)置LED驅(qū)動(dòng)控制IC引腳RSET的電流，白光投光燈批發(fā)，從而改變LED的正向工作電流，達(dá)到調(diào)節(jié)ALED(2)采用PWM技術(shù)，白光投光燈批發(fā)，利用PWM控制信號(hào)，通過(guò)控制LED的正向工作電流的.占空比來(lái)調(diào)節(jié)AL .ED的發(fā)光亮度，白光投光燈批發(fā)。<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>解決的辦法是DIYled燈時(shí)好帶上防靜電手套或相關(guān)防護(hù)設(shè)備，以減少靜電對(duì)燈珠的沖擊。白光投光燈批發(fā)</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="白光投光燈批發(fā),投光燈" src="https://tyunfile.71360.com/WaterMark/UploadFile/shxiansheng/637269781806748047/1466494.png"></div><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(wèn)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，春夏天雨水多浙江防水投光燈性能不過(guò)由于黑區(qū)面積減少，會(huì)降低對(duì)比度;相反。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="白光投光燈批發(fā),投光燈" src="https://tyunfile.71360.com/WaterMark/UploadFile/shxiansheng/637269781919140625/8831194.png"></div><p style="text-indent:25px">接下來(lái)，我們聊聊為什么LED燈在關(guān)閉開關(guān)后還是發(fā)光:一、首先的原因就是我們的電路中火線直接進(jìn)LED驅(qū)動(dòng)器了，零線進(jìn)開關(guān)，在關(guān)閉開關(guān)之后，致使切斷了零線，火線還一直和驅(qū)動(dòng)器鏈接，加上了的燈工作的環(huán)境，LED在感應(yīng)微弱的電流之后，就會(huì)觸發(fā)驅(qū)動(dòng)器，也就是能使燈珠發(fā)光。二、在我們生活的空間內(nèi)，到處都是微弱的電波，我們只是習(xí)慣了這種電波，所以對(duì)人也沒有太大的影響，但是這對(duì)我們的LED驅(qū)動(dòng)就不一樣了。三、再有就是可能存在燈具漏電的原因，經(jīng)個(gè)人多年來(lái)的經(jīng)驗(yàn)判斷，有一些LED燈具在關(guān)閉電源開關(guān)之后，即使火線進(jìn)開關(guān)，依然會(huì)亮，而且特別的亮，零線和火線顛倒順序之后，仍然會(huì)亮，這種原因的可能就很大。</p><p style="text-indent:25px">而熒光燈都是采用易碎的玻璃作為外殼，一旦玻璃破碎，其中的汞就會(huì)馬上就會(huì)蒸發(fā)到空氣中，瞬間可使周圍空氣中的汞濃度達(dá)到10-20毫克/立方米，超過(guò)國(guó)家規(guī)定的1000- 2000倍。而汞是一種對(duì)人體十分有害的有毒物質(zhì)，汞蒸氣達(dá)0. 04至3毫克時(shí)會(huì)使人在2至3月內(nèi)慢性中毒，達(dá)1. 2至8.5毫克時(shí)會(huì)誘發(fā)急性汞中毒，如若其量達(dá)到20毫克，會(huì)直接導(dǎo)致動(dòng)物死亡。而1mg的汞就足以污染5454.5公斤的飲用水，使之達(dá)不到飲用標(biāo)準(zhǔn)。而LED日光燈中不含任何有毒物質(zhì)，是一種完全綠色環(huán)保無(wú)污染光源。<span style="display:none;"><span style="display:none;"><span style="display:none;"></span></span></span><span style="display:none;"><span style="display:none;"><span style="display:none;"><span style="display:none;"></span></span></span></span>看焊點(diǎn)。正規(guī)的LED燈帶廠家生產(chǎn)的LED燈帶是采用SMT貼片工藝，用錫膏和回流焊工藝生產(chǎn)的。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="白光投光燈批發(fā),投光燈" src="https://tyunfile.71360.com/WaterMark/UploadFile/shxiansheng/637269781212353516/4466745.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(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(guò)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。 LED尺寸減小，減少了顯示面積，顆粒感增多，黑區(qū)面積增大，增加了對(duì)比度。河南飛利浦led投光燈批發(fā)</p><p style="text-indent:25px">對(duì)于LED顯示屏的品質(zhì)影響起著主導(dǎo)作用。白光投光燈批發(fā)</p><p style="text-indent:25px">這種現(xiàn)象屢見不鮮。有些小企業(yè)采用手工焊接，使用40瓦普通烙鐵，焊接溫度無(wú)法控制，烙鐵溫度在300-400°℃以上，過(guò)高的焊接溫度也會(huì)造成死燈，LED引線在高溫下膨脹系數(shù)比在150℃左右的膨脹系數(shù)高好幾倍，內(nèi)部的金絲焊點(diǎn)會(huì)因?yàn)檫^(guò)大的熱脹冷縮將焊接點(diǎn)拉開，造成死燈現(xiàn)象。2、LED燈內(nèi)部連線焊點(diǎn)開路造成死燈現(xiàn)象的原因分析2.1封裝企業(yè)生產(chǎn)工藝不建全，來(lái)料檢驗(yàn)手段落后，是造成LED死燈的直接原因，一般采用支架排封裝的LED,支架排是采用銅或鐵金屬材料經(jīng)精密模具沖壓而成白光投光燈批發(fā)</p></p><br /><p>文章來(lái)源地址: http://www.cdcfah.com/cp/3081493.html</p></div></div></div></div></div><div id="9vbnljx" class="page-right twoColRt"><div id="xvbx55x" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="rxljpnb" 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) 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