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class="container clearfix tcPro"><section class="home-main container clearfix"><div id="ow5q8au" class="twoCol"><div id="u3g8jt3" class="page-proshow clearfix"><p class="current"> 當前位置:<a href="http://www.cdcfah.com/">首頁?<a href="http://www.cdcfah.com/cp/">產(chǎn)品供應</a>?<a href="http://www.cdcfah.com/cp/first-_yyby/">醫(yī)藥健康</a>?<a href="http://www.cdcfah.com/cp/second-yyby_ylsb/">醫(yī)療設備</a>?<a href="http://www.cdcfah.com/cp/third-ylsb_qtflpd/">其它未分類</a>?青島狼牌5512攝像機故障與維修誠信經(jīng)營成都鐳伙醫(yī)修平臺供應</p><div id="jlulcd4" class="leftbox clearfix"><h1>青島狼牌5512攝像機故障與維修誠信經(jīng)營成都鐳伙醫(yī)修平臺供應</h1><div id="btnelck" class="proBig"><div id="cariuge" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/leihuo/637397413267477439/9629401.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="ksoqriu" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/leihuo/637397413267477439/9629401.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="8yaxypg" 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>四川省</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關鍵詞：</span>青島狼牌5512攝像機故障與維修,5512</p><p><span>***更新：</span>2021-01-26 09:09:17</p><p><span id="click" >瀏覽次數(shù)：1次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="bjlcjkr" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">成都鐳伙科技有限公司</a></p><p><span>聯(lián)系人：</span>邱鋒</p><p><span>郵箱: </span>cdleihuokeji@163.com</p><p><span>電話: </span>13982269628</p><p><span>傳真: </span>028_</p><p><span>網(wǎng)址: </span></p><p><span>手機: </span>028-8444323</p><p><span>地址: </span>新都區(qū)踏水路創(chuàng)想大廈2單元2606</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="tcseuvc" class="page-proshow02"><p class="title">詳細說明</p><div id="pduaccj" class="box"><p><p> 三、電感器、變壓器檢測方法與經(jīng)驗1色碼電感器的的檢測將萬用表置于R×1擋，紅、黑表筆各接色碼電感器的任一引出端，此時指針應向右擺動。根據(jù)測出的電阻值大小，可具體分下述三種情況進行鑒別：A被測色碼電感器電阻值為零，其內(nèi)部有短路性故障。B被測色碼電感器直流電阻值的大小與繞制電感器線圈所用的漆包線徑、繞制圈數(shù)有直接關系，只要能測出電阻值，青島狼牌5512攝像機故障與維修，則可認為被測色碼電感器是正常的。2中周變壓器的檢測A將萬用表撥至R×1擋，青島狼牌5512攝像機故障與維修，青島狼牌5512攝像機故障與維修，按照中周變壓器的各繞組引腳排列規(guī)律，逐一檢查各繞組的通斷情況，進而判斷其是否正常。B檢測絕緣性能將萬用表置于R×10k擋，做如下幾種狀態(tài)測試：(1)初級繞組與次級繞組之間的電阻值；(2)初級繞組與外殼之間的電阻值；(3)次級繞組與外殼之間的電阻值。上述測試結(jié)果分出現(xiàn)三種情況：(1)阻值為無窮大：正常；(2)阻值為零：有短路性故障；(3)阻值小于無窮大，但大于零：有漏電性故障。二極管的主要特性是單向?qū)щ娦?，也就是在正向電壓的作用下，導通電阻很??；青島狼牌5512攝像機故障與維修</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="青島狼牌5512攝像機故障與維修,5512" src="https://tyunfile.71360.com/WaterMark/UploadFile/leihuo/637397413267477439/9629401.png"></div><p> 2、鍵型二極管鍵型二極管是在鍺或硅的單晶片上熔接或銀的細絲而形成的。其特性介于點接觸型二極管和合金型二極管之間。與點接觸型相比較，雖然鍵型二極管的PN結(jié)電容量稍有增加，但正向特性特別優(yōu)良。多作開關用，有時也被應用于檢波和電源整流（不大于50mA）。在鍵型二極管中，熔接金絲的二極管有時被稱金鍵型，熔接銀絲的二極管有時被稱為銀鍵型。3、合金型二極管在N型鍺或硅的單晶片上，通過合金銦、鋁等金屬的方法制作PN結(jié)而形成的。正向電壓降小，適于大電流整流。因其PN結(jié)反向時靜電容量大，所以不適于高頻檢波和高頻整流。4、擴散型二極管在高溫的P型雜質(zhì)氣體中，加熱N型鍺或硅的單晶片，使單晶片表面的一部變成P型，以此法PN結(jié)。因PN結(jié)正向電壓降小。青島狼牌5512攝像機故障與維修如果重復性差，表明可能是機器硬件出現(xiàn)問題；</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="青島狼牌5512攝像機故障與維修,5512" src="https://tyunfile.71360.com/WaterMark/UploadFile/leihuo/637397413260514574/7404925.png"></div><p> 3熔斷電阻器的檢測。在電路中，當熔斷電阻器熔斷開路后，可根據(jù)經(jīng)驗作出判斷： </p> <p> 若發(fā)現(xiàn)熔斷電阻器表面發(fā)黑或燒焦，可斷定是其負荷過重，通過它的電流超過額定值很多 </p> <p> 倍所致；如果其表面無任何痕跡而開路，則表明流過的電流剛好等于或稍大于其額定熔斷 </p> <p> 值。對于表面無任何痕跡的熔斷電阻器好壞的判斷，可借助萬用表R×1擋來測量，為保證 </p> <p> 測量準確，應將熔斷電阻器一端從電路上焊下。若測得的阻值為無窮大，則說明此熔斷電 </p> <p> 阻器已失效開路，若測得的阻值與標稱值相差甚遠，表明電阻變值，也不宜再使用。在維 </p> <p> 修實踐中發(fā)現(xiàn)，也有少數(shù)熔斷電阻器在電路中被擊穿短路的現(xiàn)象，檢測時也應予以注意。 </p><p> 3電源變壓器的檢測A通過觀察變壓器的外貌來檢查其是否有明顯異常現(xiàn)象。如線圈引線是否斷裂，脫焊，絕緣材料是否有燒焦痕跡，鐵心緊固螺桿是否有松動，硅鋼片有無銹蝕，繞組線圈是否有外露等。B絕緣性測試。用萬用表R×10k擋分別測量鐵心與初級，初級與各次級、鐵心與各次級、靜電屏蔽層與衩次級、次級各繞組間的電阻值，萬用表指針均應指在無窮大位置不動。否則，說明變壓器絕緣性能不良。C線圈通斷的檢測。將萬用表置于R×1擋，測試中，若某個繞組的電阻值為無窮大，則說明此繞組有斷路性故障。D判別初、次級線圈。電源變壓器初級引腳和次級引腳一般都是分別從兩側(cè)引出的，并且初級繞組多標有220V字樣，次級繞組則標出額定電壓值，如15V、24V、35V等。再根據(jù)這些標記進行識別。E空載電流的檢測。(a)直接測量法。將次級所有繞組全部開路，把萬用表置于交流電流擋(500mA，串入初級繞組。當初級繞組的插頭插入220V交流市電時，萬用表所指示的便是空載電流值。此值不應大于變壓器滿載電流的10％～20％。一般常見電子設備電源變壓器的正?？蛰d電流應在100mA左右。如果超出太多，則說明變壓器有短路性故障。(b)間接測量法。在變壓器的初級繞組中串聯(lián)一個10/5W的電阻。因為電解電容的容量較一般固定電容大得多，所以，測量時，應針對不同容量選用合適的量程。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="青島狼牌5512攝像機故障與維修,5512" src="https://tyunfile.71360.com/UploadFile/leihuo/637397412917135611/5434694.png"></div><p> **近，使用大電流整流器的主流已由硅合金型轉(zhuǎn)移到硅擴散型。5、臺面型二極管PN結(jié)的制作方法雖然與擴散型相同，但是，只保留PN結(jié)及其必要的部分，把不必要的部分用藥品腐蝕掉。其剩余的部分便呈現(xiàn)出臺面形，因而得名。初期生產(chǎn)的臺面型，是對半導體材料使用擴散法而制成的。因此，又把這種臺面型稱為擴散臺面型。對于這一類型來說，似乎大電流整流用的產(chǎn)品型號很少，而小電流開關用的產(chǎn)品型號卻很多。6、平面型二極管在半導體單晶片（主要地是N型硅單晶片）上，擴散P型雜質(zhì)，利用硅片表面氧化膜的屏蔽作用，在N型硅單晶片上*選擇性地擴散一部分而形成的PN結(jié)。因此，不需要為調(diào)整PN結(jié)面積的藥品腐蝕作用。由于半導體表面被制作得平整，故而得名。色環(huán)電阻的阻值雖然能以色環(huán)標志來確定，但在使用時比較好還是用萬用表測試一下其實際阻值。青島狼牌5512攝像機故障與維修</p><p style="text-indent:25px">變?nèi)菪阅茏儾顣r，高頻調(diào)制電路的工作不穩(wěn)定，使調(diào)制后的高頻信號發(fā)送到對方被對方接收后產(chǎn)生失真。青島狼牌5512攝像機故障與維修</p><p> 1、作用：二極管的主要特性是單向?qū)щ娦?，也就是在正向電壓的作用下，導通電阻很?。欢诜聪螂妷鹤饔孟聦娮铇O大或無窮大。正因為二極管具有上述特性，電路中常把它用在整流、隔離、穩(wěn)壓、極性保護、編碼控制、調(diào)頻調(diào)制和靜噪等電路中。晶體二極管按作用可分為：整流二極管（如1N4004）、隔離二極管（如1N4148）、肖特基二極管（如BAT85）、發(fā)光二極管、穩(wěn)壓二極管等。2、識別方法：二極管的識別很簡單，小功率二極管的N極（負極），在二極管外表大多采用一種色圈標出來，有些二極管也用二極管**符號來表示P極（正極）或N極（負極）,也有采用符號標志為“P”、“N”來確定二極管極性的。發(fā)光二極管的正負極可從引腳長短來識別，長腳為正，短腳為負。青島狼牌5512攝像機故障與維修</p><p style="text-indent:25px">成都鐳伙科技有限公司致力于儀器儀表，是一家服務型的公司。成都鐳伙科技致力于為客戶提供良好的內(nèi)窺鏡以及維修周邊，動力系統(tǒng)及手柄附件維修，攝像系統(tǒng)主機及攝像頭維修，手術器械類維修，一切以用戶需求為中心，深受廣大客戶的歡迎。公司將不斷增強企業(yè)重點競爭力，努力學習行業(yè)知識，遵守行業(yè)規(guī)范，植根于儀器儀表行業(yè)的發(fā)展。成都鐳伙科技秉承“客戶為尊、服務為榮、創(chuàng)意為先、技術為實”的經(jīng)營理念，全力打造公司的重點競爭力。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/3018692.html</p></div></div></div></div></div><div id="pdwtfxx" class="page-right twoColRt"><div id="cu8jn3y" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="32hde8h" 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="2ckjvhd" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/846569.html"><div><img 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