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class="pic"><img src="https://tyunfile.71360.com/UploadFile/szmdjd/637393089653520064/8066766.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="y3ixbsk" 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>廣東直流電源使用,直流電源</p><p><span>***更新：</span>2020-12-29 00:23:42</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="23ri4mi" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">深圳市茂迪機電設備有限公司</a></p><p><span>聯(lián)系人：</span>黃富強</p><p><span>郵箱: </span>fuqiang.huang@maodi.net</p><p><span>電話: </span>13509625980</p><p><span>傳真: </span>0755_</p><p><span>網(wǎng)址: </span>http://www.maodi.net</p><p><span>手機: </span>0755-83280136</p><p><span>地址: </span>深南大道6006號華豐大廈2803、2804</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="xwo2giu" class="page-proshow02"><p class="title">詳細說明</p><div id="uov422j" class="box"><p><p style="text-indent:25px">240V高壓直流供電系統(tǒng)的優(yōu)勢240V高壓直流供電系統(tǒng)有著技術(shù)成熟、可靠性高，廣東直流電源使用、維護操作簡易、轉(zhuǎn)換效率高、在線擴容簡單等優(yōu)點，通信業(yè)界一直在探討采用高壓直流系統(tǒng)來代替UPS系統(tǒng)。240V高壓直流供電系統(tǒng)具有明顯技術(shù)優(yōu)勢和價格優(yōu)勢，且能在沿用現(xiàn)有的IT設備的前提下推廣使用，因此得到了各級部門的***重視和支持，廣東直流電源使用，廣東直流電源使用。1、系統(tǒng)構(gòu)成簡單原理、架構(gòu)與傳統(tǒng)通信局（站）的?48V直流供電系統(tǒng)完全相同，而后者的可用性及可靠性均得到數(shù)十年運行的檢驗。因此，該系統(tǒng)易于維護，對廠商的依賴度降低；負載率高且易于擴容；運行效率高；直流母排是電池組、整流器、負載的共同匯結(jié)點，系統(tǒng)可靠性高。高頻開關(guān)直流電源多少錢。廣東直流電源使用</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="廣東直流電源使用,直流電源" src="https://tyunfile.71360.com/UploadFile/szmdjd/637393089653520064/8066766.png"></div><p> 直流穩(wěn)壓電源 </p> <p> <p> 能為負載提供穩(wěn)定直流電源的電子裝置。直流穩(wěn)壓電源的供電電源大都是交流電源，當交流供電電源的電壓或負載電阻變化時，穩(wěn)壓器的直流輸出電壓都會保持穩(wěn)定。直流穩(wěn)壓電源隨著電子設備向高精度、高穩(wěn)定性和高可靠性的方向發(fā)展，對電子設備的供電電源提出了高的要求。 </p> <p> <br /> </p> <p> <br /> </p> 當今社會人們極大的享受著電子設備帶來的便利，但是任何電子設備都有一個共同的電路--電源電路。大到超級計算機、小到袖珍計算器，所有的電子設備都必須在電源電路的支持下才能正常工作。當然這些電源電路的樣式、復雜程度千差萬別。超級計算機的電源電路本身就是一套復雜的電源系統(tǒng)。通過這套電源系統(tǒng)，超級計算機各部分都能夠得到持續(xù)穩(wěn)定、符合各種復雜規(guī)范的電源供應。袖珍計算器則是簡單多的電池電源電路。不過你可不要小看了這個電池電源電路，比較新型的電路完全具備電池能量提醒、掉電保護等高級功能。可以說電源電路是一切電子設備的基礎，沒有電源電路就不會有如此種類繁多的電子設備。山東連續(xù)可調(diào)直流電源大功率可調(diào)直流電源。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="廣東直流電源使用,直流電源" src="https://tyunfile.71360.com/UploadFile/szmdjd/637393089834770910/6557514.png"></div><p style="text-indent:25px">開關(guān)型與線性穩(wěn)壓電源不同的一類穩(wěn)電源就是開關(guān)型直流穩(wěn)壓電源，它的電路型式主要有單端反激式，單端正激式、半橋式、推挽式和全橋式。它和線性電源的根本區(qū)別在于它變壓器不工作在工頻而是工作在幾十千赫茲到幾兆赫茲。功能管不是工作在飽和及截止區(qū)即開關(guān)狀態(tài)；開關(guān)電源因此而得名。 [1] 可調(diào)直流穩(wěn)壓電源(開關(guān)型)開關(guān)電源的優(yōu)點是體積小，重量輕，穩(wěn)定可靠；缺點相對于線性電源來說紋波較大（一般≤1%VO(P-P),好的可做到十幾mV(P-P)或更小)。它的功率可自幾瓦－幾千瓦均有產(chǎn)品。價位為3元－十幾萬元/瓦，下面就一般習慣分類介紹幾種開關(guān)電源：（1）AC/DC該類電源也稱一次電源，它自電網(wǎng)取得能量，經(jīng)過高壓整流濾波得到一個直流高壓，供DC/DC變換器在輸出端獲得一個或幾個穩(wěn)定的直流電壓，功率從幾瓦－幾千瓦均有產(chǎn)品，用于不同場合。屬此類產(chǎn)品的規(guī)格型號繁多，據(jù)用戶需要而定通信電源中的一次電源（AC220輸入，DC48V或24V輸出)也屬此類。（2）DC/DC在通信系統(tǒng)中也稱二次電源，它是由一次電源或直流電池組提供一個直流輸入電壓，經(jīng)DC/DC變換以后在輸出端獲一個或幾個直流電壓。</p><p> 電源的特征量表現(xiàn)電源本身的一個重要特征量是電源的電動勢，它等于單位正電荷從負極通過電源內(nèi)部移到正極時非靜電力所作的功。當電源給電路提供能量時，所供給的功率P等于電源的電動勢E與電流I兩者的乘積，P=E I。 </p> <p> <br /> </p> <p> 電源的另一個特征量是它的內(nèi)電阻(簡稱內(nèi)阻)R0，當通過電源的電流為I時,電源內(nèi)部損耗的熱功率(即單位時間內(nèi)產(chǎn)生的焦耳熱)等于R0I。 </p> <p> 當電源的正、負兩極沒有連通時,電源處于斷路(開路)狀態(tài)，這時電源兩電極之間的電位差在量值上即等于電源的電動勢。在斷路狀態(tài)下，不發(fā)生非電能與電能的相互轉(zhuǎn)換。當把負載電阻接到電源的兩極上以構(gòu)成閉合回路時，通過電源內(nèi)部的電流從負極流到正極，這時，電源所提供的功率E I等于輸送到外電路的功率U I(U是電源正極與負極之間的電位差)與內(nèi)電阻中損耗的熱功率R0I之和，E I=U IR0I。于是，當電源向負載電阻提供功率時，電源兩極間的電位差U=E-R0I。 </p> <p> <br /> 直流電源和交流電源的區(qū)別。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="廣東直流電源使用,直流電源" src="https://tyunfile.71360.com/UploadFile/szmdjd/637393089567182490/9055356.png"></div><p> 可編程直流電源的作用是什么？ </p> <p> 可編程直流電源是用數(shù)字或編碼器輸入，非電位器調(diào)節(jié)電壓、電流的直流電源。 </p> <p> <br /> </p> <p> 可編程直流電源有以下作用： </p> <p> 1、**功能——在某些可編程電源中，有一種通道間聯(lián)動的功能，即**功能。 </p> <p> **功能指所有的輸出同時被控制，并且通過保持電壓與事先設定的電壓一致，使它們都服從統(tǒng)一指揮。 </p> <p> 例如：如果電壓1從10V變?yōu)?2V，則電壓2和3將隨之從5V變?yōu)?V，電壓4隨之從20V變?yōu)?4V。 </p> <p> 但是，如果其中一個處于領(lǐng)導位置的輸出的比較大電流存在極限值，而且輸出電流達到該極限值時，則所有其他處于從屬地位的輸出電流也同時進入限流狀態(tài)。 </p> <p> 如果設備中安裝了電子保險絲，則到達該極限值的輸出將被斷開，進而其他處于從屬位置的輸出也全部被斷開。 </p> <p> <br /> 低文波可調(diào)直流電源。山東連續(xù)可調(diào)直流電源</p><p style="text-indent:25px">寬范圍可編程直流電源。廣東直流電源使用</p><p style="text-indent:25px">3）通信電源通信電源其實質(zhì)上就是DC/DC變換器式電源，只是它一般以直流－48V或－24V供電，并用后備電池作DC供電的備份，將DC的供電電壓變換成電路的工作電壓，一般它又分**供電、分層供電和單板供電三種，以后者可靠性比較高。（4）電臺電源電臺電源輸入AC220V/110V，輸出DC13.8V,功率由所供電臺功率而定，幾安幾百安均有產(chǎn)品。為防止AC電網(wǎng)斷電影響電臺工作，而需要有電池組作為備份，所以此類電源除輸出一個13.8V直流電壓外,還具有對電池充電自動轉(zhuǎn)換功能。（5）模塊電源隨著科學技術(shù)飛速發(fā)展，對電源可靠性、容量/體積比要求越來越高，模塊電源越來越顯示其優(yōu)越性，它工作頻率高、體積小、可靠性高，便于安裝和組合擴容，所以越來越被***采用。國內(nèi)雖有相應模塊生產(chǎn)，但因生產(chǎn)工藝未能趕上國際水平，故障率較高。DC/DC模塊電源雖然成本較高，但從產(chǎn)品的漫長的應用周期的整體成本來看，特別是因系統(tǒng)故障而導致的高昂的維修成本及商譽損失來看，選用該電源模塊還是合算合算的，在此還值得一提的是羅氏變換器電路，它的突出優(yōu)點是電路結(jié)構(gòu)簡單，效率高和輸出電壓、電流的紋波值接近于零。廣東直流電源使用</p><p> 深圳市茂迪機電設備有限公司成立于1995年4月，是廣東省儀器儀表協(xié)會理事單位、深圳市儀器儀表行業(yè)協(xié)會理事單位，深圳市**采購中心定點采購單位。主要由光電事業(yè)部、物體色差部、系統(tǒng)集成部，環(huán)境測試儀器部組成。 </p> <p> 經(jīng)過多年的努力，根據(jù)中國儀器儀表市場的需求及國內(nèi)外儀器儀表行業(yè)的發(fā)展趨勢，我公司從眾多的同類產(chǎn)品中精挑細選出一些技術(shù)先進，質(zhì)量可靠，性價比高的品牌測量儀器推薦給用戶，與日本柯尼卡美能達 Konica Minolta、美國Radiant、雷云光電Rayclouds、德國Instyument Systems、日本托普康Topcon、法國ELDIM、美國藍菲Labsphere、中國臺灣茂迪、德國GMC-I高美測儀、德國GMC-I KURTH（庫爾特），TESCOM，有著緊密而***的合作聯(lián)系。 </p> <p> </p> <span style="display:none;"></span></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/2603382.html</p></div></div></div></div></div><div id="c7xztfb" class="page-right twoColRt"><div id="cbisqcy" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="azbqzln" 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="2oa2x8r" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/846569.html"><div><img src="https://tyunfile.71360.com/WaterMark/UploadFile/nbzxsw/637298235378037109/764794.png" alt="寧波寧海直接考A2有幾個科目真誠推薦寧波助學商務信息咨詢供應" class="vcenter" 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