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href="http://m.cdcfah.com/zh/"><span>展會信息</span></a></li></ul></div></nav><section class="wrap clearfix"><section class="container clearfix tcPro"><section class="home-main container clearfix"><div id="2krtvsz" class="twoCol"><div id="aegifro" class="page-proshow clearfix"><p class="current"> 當(dāng)前位置:<a href="http://m.cdcfah.com/">首頁?<a href="http://m.cdcfah.com/cp/">產(chǎn)品供應(yīng)</a>?<a href="http://m.cdcfah.com/cp/second-_dzyqj/">電子元器件</a>?<a href="http://m.cdcfah.com/cp/third-dzyqj_pcbdlb/">PCB電路板</a>?一站式安防PCB設(shè)計聯(lián)系人東莞市仁遠(yuǎn)電子科技供應(yīng)</p><div id="8nfcovc" class="leftbox clearfix"><h1>一站式安防PCB設(shè)計聯(lián)系人東莞市仁遠(yuǎn)電子科技供應(yīng)</h1><div id="shjpvxe" class="proBig"><div id="78tkhoq" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/dgrydzkj/637366420277314453/6315771.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="tifc787" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/dgrydzkj/637366420277314453/6315771.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="y3fm0yf" 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>廣東省</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>一站式安防PCB設(shè)計聯(lián)系人,PCB設(shè)計</p><p><span>***更新：</span>2021-02-04 07:16:48</p><p><span id="click" >瀏覽次數(shù)：2次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="jahuoqx" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">東莞市仁遠(yuǎn)電子科技有限公司</a></p><p><span>聯(lián)系人：</span>陳海濤</p><p><span>郵箱: </span>haitao_chen@dgrenyuan.com</p><p><span>電話: </span>13802373717</p><p><span>傳真: </span>0769_</p><p><span>網(wǎng)址: </span>http://www.dgrenyuan.com</p><p><span>手機(jī): </span>0769-85626128</p><p><span>地址: </span>長安鎮(zhèn)烏沙社區(qū)環(huán)東路228號企匯服務(wù)中心五樓501</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="3oacwdk" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="xm3gr3g" class="box"><p><p>當(dāng)一塊PCB板完成了布局布線，并且檢查了連通性和間距都沒有發(fā)現(xiàn)問題的情況下，一塊PCB是不是就完成了呢？答案當(dāng)然是否定的。很多初學(xué)者，甚至包括一些有經(jīng)驗的工程師，由于時間緊或者不耐煩亦或者過于自信，往往會草草了事，忽略了后期檢查，結(jié)果出現(xiàn)了一些很低級的BUG，比如線寬不夠、元件標(biāo)號絲印壓在過孔上、插座靠得太近，一站式安防PCB設(shè)計聯(lián)系人，一站式安防PCB設(shè)計聯(lián)系人、信號出現(xiàn)環(huán)路等等，導(dǎo)致電氣問題或者工藝問題，嚴(yán)重的要重新打板，造成浪費。所以，當(dāng)一塊PCB完成了布局布線之后，后期檢查是一個很重要的步驟。PCB的檢查包含很多細(xì)節(jié)要素，現(xiàn)在整理了認(rèn)為較基本并且較容易出錯的要素，以便在后期檢查時重點關(guān)注。1.原件封裝2.布局3，一站式安防PCB設(shè)計聯(lián)系人.布線。需要專業(yè)PCB設(shè)計與生產(chǎn)的廠家？看這里！價格優(yōu)惠，服務(wù)好！一站式安防PCB設(shè)計聯(lián)系人</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="一站式安防PCB設(shè)計聯(lián)系人,PCB設(shè)計" src="https://tyunfile.71360.com/UploadFile/dgrydzkj/637366420277314453/6315771.png"></div><p>高頻率數(shù)據(jù)信號的地線的地電位差一般不是一致的，二者立即經(jīng)常存有一定的工作電壓差，并且，高頻率數(shù)據(jù)信號的地線還經(jīng)常含有比較豐富的高頻率信號的諧波電流份量，當(dāng)立即聯(lián)接數(shù)據(jù)信號地線和仿真模擬信號地線時，高頻率信號的諧波電流便會根據(jù)地線藕合的方法對仿真模擬信號開展影響。因此一般狀況下，對高頻率數(shù)據(jù)信號的地線和仿真模擬信號的地線是要做防護(hù)的，能夠選用在適合部位點射互連的方法，或是選用高頻率扼流磁珠互連的方法。6、集成電路芯片塊的開關(guān)電源腳位提升高頻率退藕電容器每一個集成電路芯片塊的開關(guān)電源腳位就近原則增一個高頻率退藕電容器。提升開關(guān)電源腳位的高頻率退藕電容器，能夠合理地抑止開關(guān)電源腳位上的高頻率諧波電流產(chǎn)生影響。7、防止走線產(chǎn)生的環(huán)城路各種高頻率信號走線盡可能不必產(chǎn)生環(huán)城路，若沒法防止則應(yīng)使環(huán)城路總面積盡可能小。8、務(wù)必確保優(yōu)良的信號匹配電阻信號在傳送的全過程中，當(dāng)特性阻抗不配對的情況下，信號便會在傳送安全通道中產(chǎn)生信號的反射面，反射面會使生成信號產(chǎn)生過沖，造成信號在邏輯性門限周邊起伏。***反射面的壓根方法是使傳送信號的特性阻抗優(yōu)良配對，因為負(fù)荷特性阻抗與同軸電纜的特性阻抗相距越大反射面也越大。一站式安防PCB設(shè)計聯(lián)系人PCB設(shè)計，線路板貼片不知道怎么選購？來這里輕松買！</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="一站式安防PCB設(shè)計聯(lián)系人,PCB設(shè)計" src="https://tyunfile.71360.com/UploadFile/dgrydzkj/637366419669003906/6621050.png"></div><p>走線間距離間隔必須是單一走線寬度的3倍或兩個走線間的距離間隔必須大于單一走線寬度的2倍)。更有效的做法是在導(dǎo)線間用地線隔離。(4)在相鄰的信號線間插入一根地線也可以有效減小容性串?dāng)_，這根地線需要每1/4波長就接入地層。(5)感性耦合較難壓制，要盡量降低回路數(shù)量，減小回路面積，信號回路避免共用同一段導(dǎo)線。(6)相鄰兩層的信號層走線應(yīng)垂直，盡量避免平行走線，減少層間的串?dāng)_。(7)表層只有一個參考層面，表層布線的耦合比中間層要強(qiáng)，因此，對串?dāng)_比較敏感的信號盡量布在內(nèi)層。(8)通過端接，使傳輸線的遠(yuǎn)端和近端、終端阻抗與傳輸線匹配，可較高減少串?dāng)_和反射干擾。反射分析當(dāng)信號在傳輸線上傳播時，只要遇到了阻抗變化，就會發(fā)生反射，解決反射問題的主要方法是進(jìn)行終端阻抗匹配。典型的傳輸線端接策略在高速數(shù)字系統(tǒng)中，傳輸線上阻抗不匹配會引起信號反射，減少和消除反射的方法是根據(jù)傳輸線的特性阻抗在其發(fā)送端或接收端進(jìn)行終端阻抗匹配，從而使源反射系數(shù)或負(fù)載反射系數(shù)為O。傳輸線的長度符合下列的條件應(yīng)使用端接技術(shù)：L>tr/2tpd。式中，L為傳輸線長；tr為源端信號上升時間；tpd為傳輸線上每單位長度的負(fù)載傳輸延遲。</p><p>PCIE必須在發(fā)送端和協(xié)調(diào)器中間溝通交流藕合，差分對的2個溝通交流耦合電容務(wù)必有同樣的封裝規(guī)格，部位要對稱性且要擺在挨近火紅金手指這里，電容器值強(qiáng)烈推薦為，不允許應(yīng)用直插封裝。6、SCL等信號線不可以穿越重生PCIE主集成ic。有效的走線設(shè)計方案能夠信號的兼容模式，減少信號的反射面和電磁感應(yīng)耗損。PCI-E總線的信號線選用髙速串行通信差分通訊信號，因而，重視髙速差分信號對的走線設(shè)計方案規(guī)定和標(biāo)準(zhǔn)，保證PCI-E總線能開展一切正常通訊。PCI-E是一種雙單工聯(lián)接的點到點串行通信差分低壓互連。每一個安全通道有倆對差分信號：傳送對Txp/Txn，接受對Rxp/Rxn。該信號工作中在。內(nèi)嵌式數(shù)字時鐘根據(jù)***不一樣差分對的長度匹配簡單化了走線標(biāo)準(zhǔn)。伴隨著PCI-E串行總線傳輸速度的持續(xù)提升，減少互聯(lián)耗損和顫動費用預(yù)算的設(shè)計方案越來越分外關(guān)鍵。在全部PCI-E側(cè)板的設(shè)計方案中，走線的難度系數(shù)關(guān)鍵存有于PCI-E的這種差分對。圖1出示了PCI-E髙速串行通信信號差分對走線中關(guān)鍵的標(biāo)準(zhǔn)，在其中A、B、C和D四個框架中表明的是普遍的四種PCI-E差分對的四種扇入扇出方法，在其中以象中A所顯示的對稱性管腳方法扇入扇出實際效果較好，D為不錯方法，B和C為行得通方法。專業(yè)PCB設(shè)計版圖生產(chǎn)加工，電路板打樣，可提供加急打樣服務(wù)！</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="一站式安防PCB設(shè)計聯(lián)系人,PCB設(shè)計" src="https://tyunfile.71360.com/UploadFile/dgrydzkj/637366419688105469/6155398.png"></div><p>假如在數(shù)字集成電路中不應(yīng)用旁路電容得話，就很有可能在數(shù)據(jù)信號途徑上引進(jìn)噪音，更比較嚴(yán)重的狀況乃至?xí)斐烧饎?。在仿真模擬和數(shù)據(jù)PCB設(shè)計中，旁通或去耦電容（0．1uF）應(yīng)盡可能挨近器件置放。供電系統(tǒng)開關(guān)電源去耦電容（10uF）應(yīng)置放在線路板的電源插頭入口。全部狀況下，這種電容器的腳位都應(yīng)較短。在圖2此電路板上，應(yīng)用不一樣的線路來布電源插頭和接地線，因為這類不適當(dāng)?shù)南嗷ヅ浜希€路板的電子器件元器件和路線受干擾信號的概率較為大。在圖3此單面鋁基板中，到電路板上器件的電源插頭和接地線相互挨近。此線路板中電源插頭和接地線的砂漿配合比圖2中適當(dāng)。線路板中電子器件元器件和路線受干擾信號（EMI）的概率減少了679／12．8倍或約54倍。針對控制板和CPU那樣的數(shù)據(jù)器件，一樣必須去耦電容，但緣故不一樣。這種電容器的一個作用是作為“小型”正電荷庫。在數(shù)字電路設(shè)計中，實行門情況的轉(zhuǎn)換一般必須非常大的電流量。因為電源開關(guān)時集成ic上造成電源開關(guān)暫態(tài)電流量并流過線路板，有附加的“預(yù)留”正電荷是有益的。假如實行電源開關(guān)姿勢時沒有充足的正電荷，會導(dǎo)致電源電壓產(chǎn)生非常大轉(zhuǎn)變。工作電壓轉(zhuǎn)變很大，會造成模擬信號脈沖信號進(jìn)到不確定性情況。這里的pcb設(shè)計與生產(chǎn)加工用過的老板都說好.快速打樣,精選材質(zhì)！一站式安防PCB設(shè)計聯(lián)系人</p><p style="text-indent:25px">pcb設(shè)計，線路板代加工找仁遠(yuǎn)電子，品質(zhì)優(yōu)良，交貨及時，歡迎來電咨詢！一站式安防PCB設(shè)計聯(lián)系人</p><p>因此針對例如信號的數(shù)字時鐘、晶振電路、DDR的數(shù)據(jù)信息、LVDS線、USB線、HDMI線等高頻率信號線全是規(guī)定盡量的走線越少越好。3、髙速電子元器件引腳間的導(dǎo)線彎曲越低就越好高頻電路布線的導(dǎo)線比較好是選用全平行線，必須轉(zhuǎn)折點，能用四十五度曲線或是弧形轉(zhuǎn)折點，這類規(guī)定在低頻電源電路中只是用以提升銅泊的接觸壓制抗壓強(qiáng)度，而在高頻電路中，考慮這一規(guī)定卻能夠降低高頻率信號對外開放的發(fā)送和相互之間的藕合。4、留意信號線近距平行面走線引進(jìn)的“串?dāng)_”高頻電路布線要留意信號線近距平行面走線所引進(jìn)的“串?dāng)_”，串?dāng)_就是指沒有立即聯(lián)接的信號線中間的藕合狀況。因為高頻率信號順著同軸電纜是以無線電波的方式傳送的，信號線會具有無線天線的功效，磁場的動能會在同軸電纜的周邊發(fā)送，信號中間因為磁場的互相藕合而造成的不期待的噪音信號稱之為串?dāng)_（Crosstalk）。PCB板層的主要參數(shù)、信號線的間隔、驅(qū)動器端和協(xié)調(diào)器的電氣設(shè)備特點及其信號線線接方法對串?dāng)_都是有一定的危害。因此為了更好地降低高頻率信號的串?dāng)_，在布線的情況下規(guī)定盡量的保證以下幾個方面：（1）在布線室內(nèi)空間容許的標(biāo)準(zhǔn)下，在串?dāng)_較比較嚴(yán)重的兩道中間**一條地線或地平面圖。一站式安防PCB設(shè)計聯(lián)系人</p><p style="text-indent:25px">東莞市仁遠(yuǎn)電子科技有限公司致力于電子元器件，是一家服務(wù)型公司。公司業(yè)務(wù)分為電子產(chǎn)品研發(fā)，PCB 設(shè)計，中小批量PCB生銷售，SMT代工代料等，目前不斷進(jìn)行創(chuàng)新和服務(wù)改進(jìn)，為客戶提供良好的產(chǎn)品和服務(wù)。公司秉持誠信為本的經(jīng)營理念，在電子元器件深耕多年，以技術(shù)為先導(dǎo)，以自主產(chǎn)品為重點，發(fā)揮人才優(yōu)勢，打造電子元器件良好品牌。在社會各界的鼎力支持下，持續(xù)創(chuàng)新，不斷鑄造***服務(wù)體驗，為客戶成功提供堅實有力的支持。</p></p><br /><p>文章來源地址: http://m.cdcfah.com/cp/3156569.html</p></div></div></div></div></div><div id="mrbnpov" class="page-right twoColRt"><div id="2ykh88r" class="box01 margin10 clearfix"><h3><a href="http://m.cdcfah.com/cp/">猜你喜歡</a></h3><div id="8z8fcel" class="recomPic likePro"><a href="http://m.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="mbyvm3r" class="recomPic likePro"><a href="http://m.cdcfah.com/cp/846569.html"><div><img 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