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clearfix"><h1>深圳小功率DC-DC直流電源抱誠守真深圳市保益新能電氣供應(yīng)</h1><div id="87fwf7r" class="proBig"><div id="uqcjvco" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/baoyixinneng/637397338658209856/1967038.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="dxo3mco" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/baoyixinneng/637397338658209856/1967038.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="v23qxok" 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>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>深圳小功率DC-DC直流電源,DC-DC直流電源</p><p><span>***更新：</span>2021-01-09 01:12:06</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="f2p8fvq" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">深圳市保益新能電氣有限公司</a></p><p><span>聯(lián)系人：</span>葉立民</p><p><span>郵箱: </span>1301978383@qq.com</p><p><span>電話: </span>18675588113</p><p><span>傳真: </span>0755_</p><p><span>網(wǎng)址: </span>http://www.boynelectric.com</p><p><span>手機(jī): </span>0755-21070344</p><p><span>地址: </span>大浪街道浪口社區(qū)華榮路496號(hào)德泰工業(yè)區(qū)1號(hào)廠房4層402</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="7fopbsz" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="7kwypbs" class="box"><p><p style="text-indent:25px">DC-DCDC-DC直流電源：zui簡(jiǎn)單的穩(wěn)壓管電路設(shè)計(jì)方案穩(wěn)壓管穩(wěn)壓電路電路結(jié)構(gòu)簡(jiǎn)單，但是帶負(fù)載能力差，輸出功率小，一般只為芯片提供基準(zhǔn)電壓，不做電源使用。比較常用的是并聯(lián)型穩(wěn)壓電路。選擇穩(wěn)壓管時(shí)一般可按下述式子估算：(1)Uz=Vout;(2)Izmax=(1.5-3)ILmax;(3)Vin=(2-3)Vout這種電路結(jié)構(gòu)簡(jiǎn)單，可以抑制輸入電壓的擾動(dòng)，但由于受到穩(wěn)壓管zui大工作電流限制，同時(shí)輸出電壓又不能任意調(diào)節(jié)，因此該電路適應(yīng)于輸出電壓不需調(diào)節(jié)，負(fù)載電流小，深圳小功率DC-DC直流電源，深圳小功率DC-DC直流電源，要求不高的場(chǎng)合，該電路常用作對(duì)供電電壓要求不高的芯片供電。穩(wěn)壓電路的另一種形式，有些芯片對(duì)供電電壓要求比較高，深圳小功率DC-DC直流電源，例如AD DA芯片的基準(zhǔn)電壓等，這時(shí)常用的一些電壓基準(zhǔn)芯片如TL431、MC1403，REF02等。TL431是zui常用基準(zhǔn)源芯片，有良好的熱穩(wěn)定性能的三端可調(diào)分流基準(zhǔn)電壓源。DC-DC直流電源為電流檢測(cè)輸入端，當(dāng)檢測(cè)電壓超過1V時(shí)縮小脈沖寬度使電源處于間歇工作狀態(tài)。深圳小功率DC-DC直流電源</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="深圳小功率DC-DC直流電源,DC-DC直流電源" src="https://tyunfile.71360.com/WaterMark/UploadFile/baoyixinneng/637397338658209856/1967038.png"></div><p style="text-indent:25px">DC-DC直流電源和交流電源比較大的區(qū)別是什么：交流電是按正弦曲線變化的，由于交流發(fā)電機(jī)，在發(fā)電過程中，多對(duì)磁極是按一定的角度均勻分布在一個(gè)圓周上，使得發(fā)電過程中，各個(gè)磁極切割磁力線的時(shí)候，具有互補(bǔ)性，所以能夠不斷的產(chǎn)生穩(wěn)定的電流；交流電的頻率一般是50赫茲。直流電則不是按正弦曲線變化的，電流與時(shí)間的函數(shù)圖象是直線，沒有頻率的變化.。直流電的電流的方向、大小都是恒定不變的，交流電的電流方向、大小都隨著時(shí)間的改變呈現(xiàn)周期性的變化。DC-DC直流電源，是維持電路中形成穩(wěn)恒電流的裝置。如干電池、蓄電池、直流發(fā)電機(jī)等。DC-DC直流電源有正、負(fù)兩個(gè)電極，正極的電位高，負(fù)極的電位低，當(dāng)兩個(gè)電極與電路連通后，能夠使電路兩端之間維持恒定的電位差，從而在外電路中形成由正極到負(fù)極的電流。DC-DC直流電源是一種能量轉(zhuǎn)換裝置，它把其他形式的能量轉(zhuǎn)換為電能供給電路，以維持電流的穩(wěn)恒流動(dòng)。深圳小功率DC-DC直流電源DC-DC直流電源使穩(wěn)壓精度更高，如果沒有特殊要求，基本能滿足正常維修使用。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="深圳小功率DC-DC直流電源,DC-DC直流電源" src="https://tyunfile.71360.com/WaterMark/UploadFile/baoyixinneng/637397338812711808/1470393.png"></div><p style="text-indent:25px">DC-DC直流電源供電回路分為環(huán)形供電方式和輻射供電方式。環(huán)形供電網(wǎng)絡(luò)干線或小母線的二回DC-DC直流電源應(yīng)分別經(jīng)直流斷路器接人兩段直流母線，正常時(shí)為開環(huán)運(yùn)行。環(huán)形供電網(wǎng)絡(luò)干線引接負(fù)荷支路應(yīng)設(shè)置直流斷路器。DC-DC直流電源系統(tǒng)支路直流熔斷器和直流斷路器級(jí)差配合原則:應(yīng)注意上下級(jí)之間的配合。當(dāng)直流斷路器與熔斷器配合時(shí)，應(yīng)考慮動(dòng)作特性的不同，對(duì)級(jí)差做適當(dāng)調(diào)整。直流斷路器下一級(jí)不宜再接熔斷器。上、下級(jí)均為直流斷路器的，額定電流宜按照4級(jí)及以上電流級(jí)差選擇配合。蓄電池出口為熔斷器，下級(jí)為直流斷路器的，宜按照2倍及以上額定電流選擇級(jí)差配合。變電站內(nèi)設(shè)置直流保護(hù)電器的級(jí)數(shù)不宜超過4級(jí)。</p><p style="text-indent:25px">DC-DC直流電源穩(wěn)壓電路的工作原理。1.單相整流電路，要求達(dá)到“簡(jiǎn)單應(yīng)用”層次。2.濾波電路，要求達(dá)到“簡(jiǎn)單應(yīng)用”層次。3.分立元件組成的線性直流穩(wěn)壓電路，要求達(dá)到“簡(jiǎn)單應(yīng)用”層次。4.單片集成串聯(lián)型線性直流穩(wěn)壓電路，要求達(dá)到“領(lǐng)會(huì)”層次。5.開關(guān)型集成穩(wěn)壓電路，要求達(dá)到“領(lǐng)會(huì)”層次。重點(diǎn)：分立元件組成的直流穩(wěn)壓電路、單片集成串聯(lián)型線性直流穩(wěn)壓電路。難點(diǎn)：開關(guān)型集成穩(wěn)壓電路。一個(gè)穩(wěn)定的DC-DC直流電源是電子裝置必不可少的組成部分，它由如下幾部分組成:整流電路是將工頻交流電轉(zhuǎn)換為脈動(dòng)直流電。濾波電路將脈動(dòng)直流中的交流成分濾除，減少交流成分，增加直流成分。穩(wěn)壓電路采用負(fù)反饋技術(shù)，對(duì)整流后的直流電壓進(jìn)一步進(jìn)行穩(wěn)定。DC-DC直流電源分立元件組成的直流穩(wěn)壓電路、單片集成串聯(lián)型線性直流穩(wěn)壓電路。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="深圳小功率DC-DC直流電源,DC-DC直流電源" src="https://tyunfile.71360.com/WaterMark/UploadFile/baoyixinneng/637397338910739146/5148648.png"></div><p style="text-indent:25px">DC-DCDC-DC直流電源：隔離的DCDC開關(guān)電源模塊電路設(shè)計(jì)方案常用的隔離DC/DC轉(zhuǎn)換主要分為三大類：1.反激式變換。2.正激式變換。3.橋式變換常用的單端反激式DC/DC變換電路，這類隔離的控制芯片型號(hào)也不少。控制芯片典型表示是常用的UC3842系列。這種是高性能固定頻率電流的控制器，主要用于隔離AC/DC、DC/DC轉(zhuǎn)換電路。其主要應(yīng)用原理是：電路由主電路、控制電路、啟動(dòng)電路和反饋電路4 部分組成。主電路采用單端反激式拓?fù)洌巧祲簲夭娐费葑兒蠹痈綦x變壓器構(gòu)成的，該電路具有結(jié)構(gòu)簡(jiǎn)單，效率高，輸入電壓范圍寬等優(yōu)點(diǎn)?？刂齐娐肥钦麄€(gè)開關(guān)電源的中心，控制的好壞直接決定了電源整體性能。這個(gè)電路采用峰值電流型雙環(huán)控制，即在電壓閉環(huán)控制系統(tǒng)中加入峰值電流反饋控制。這類方案選擇合適的變壓器及MOS管可以把功率做的很大，與前面幾種設(shè)計(jì)方案相比電路結(jié)構(gòu)復(fù)雜，元器件參數(shù)確定比較困難，開發(fā)成本較高，因此需要此方案時(shí)可以優(yōu)先選擇市面上比較廉價(jià)的DC/DC隔離模塊。DC-DC直流電源停用相應(yīng)保護(hù)裝置并做好安全措施后執(zhí)行。深圳小功率DC-DC直流電源</p><p style="text-indent:25px">DC-DC直流電源直流柜至分電柜的饋線斷路器應(yīng)選用具有短時(shí)延時(shí)特性的直流斷路器。深圳小功率DC-DC直流電源</p><p style="text-indent:25px">DC-DC穩(wěn)壓電源應(yīng)用電路設(shè)計(jì)攻略：在電子產(chǎn)品設(shè)計(jì)過程中，電源通常是必不可少的部分，很多設(shè)備（尤其是使用電池的設(shè)備）的電源都是以DC-DC為主的。這些電源一般有三種拓?fù)浣Y(jié)構(gòu)，即人們熟知的buck、 boost和buck-boost（也叫inverting），分別用于降壓、升壓和反向。但是，也有一些時(shí)候，我們需要的輸出電壓和輸入電壓相近或就在輸入電壓范圍內(nèi)，這時(shí)候，單獨(dú)使用上述這三種結(jié)構(gòu)都無法滿足要求。對(duì)此，有的人使用先降后升或先升后降的方法，但這會(huì)較好降低效率；還有一些公司開發(fā)出了自動(dòng)切換升壓降壓模式的芯片，但這樣成本很高。有沒有一種既高效又便宜的方法達(dá)到我們的目的呢當(dāng)然有，這就是SEPIC拓?fù)浣Y(jié)構(gòu)。深圳小功率DC-DC直流電源</p></p><br /><p>文章來源地址: http://m.cdcfah.com/cp/2761550.html</p></div></div></div></div></div><div id="ubn8nul" class="page-right twoColRt"><div id="2ug77xd" class="box01 margin10 clearfix"><h3><a href="http://m.cdcfah.com/cp/">猜你喜歡</a></h3><div id="zyahypg" 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="z8yhyfg" class="recomPic likePro"><a 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