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onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="mqpvm2w" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/baoyixinneng/637397338627750864/9217509.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="72har8q" 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>小功率DC-DC直流電源批發(fā)價格,DC-DC直流電源</p><p><span>***更新：</span>2021-02-04 06:09:51</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="zmyp3fj" 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: </span>0755-21070344</p><p><span>地址: </span>大浪街道浪口社區(qū)華榮路496號德泰工業(yè)區(qū)1號廠房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="2ykrxt2" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="fs7xel2" class="box"><p><p style="text-indent:25px">DC-DC直流電源輸入濾波電容器的選擇：鋁電解電容器的額定電壓的1.3倍作為電容器的浪涌電壓，工作電壓高于160V時，是額定工作電壓+50V作為浪涌電壓，這是生產(chǎn)廠家保證的電壓，可以允許在短時間內(nèi)承受此電壓。電容器處于浪涌電壓時，電流會很大，如果時間太長，會爆開。所以鋁電容器應(yīng)該選用額定電壓稍高的，實際工作電壓為標(biāo)稱額定電壓的70~80%為宜，所以選用額定電壓值為400V的鋁電解電容。由于模塊電源體積的限制，在85～265Vac的輸入范圍內(nèi)，前級儲能鋁電解電容的容值一般選取2倍于輸出功率的值，即2.5*2=5，綜上，小功率DC-DC直流電源批發(fā)價格，鋁電解電容的取值以4，小功率DC-DC直流電源批發(fā)價格.7μF/400V為宜，小功率DC-DC直流電源批發(fā)價格。DC-DC直流電源各級斷路器的保護(hù)動作電流和動作時間應(yīng)滿足上、下級選擇性配合要求。小功率DC-DC直流電源批發(fā)價格</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="小功率DC-DC直流電源批發(fā)價格,DC-DC直流電源" src="https://tyunfile.71360.com/WaterMark/UploadFile/baoyixinneng/637397338627750864/9217509.png"></div><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“簡單應(yīng)用”層次。2.濾波電路，要求達(dá)到“簡單應(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”層次。5.開關(guān)型集成穩(wěn)壓電路，要求達(dá)到“領(lǐng)會”層次。重點：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：開關(guān)型集成穩(wěn)壓電路。一個穩(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)換為脈動直流電。濾波電路將脈動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)，對整流后的直流電壓進(jìn)一步進(jìn)行穩(wěn)定。小功率DC-DC直流電源批發(fā)價格DC-DC直流電源將不穩(wěn)定直流電壓送入逆變器變換成高頻交流電。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="小功率DC-DC直流電源批發(fā)價格,DC-DC直流電源" src="https://tyunfile.71360.com/WaterMark/UploadFile/baoyixinneng/637397338773776245/4701271.png"></div><p style="text-indent:25px">DCDC電源設(shè)計方案1、DC/DC電源電路簡介DC/DC電源電路又稱為DC/DC轉(zhuǎn)換電路，其主要功能就是進(jìn)行輸入輸出電壓轉(zhuǎn)換。一般我們把輸入電源電壓在72V以內(nèi)的電壓變換過程稱為DC/DC轉(zhuǎn)換。常見的電源主要分為車載與通訊系列和通用工業(yè)與消費系列，前者的使用的電壓一般為48V、36V、24V等，后者使用的電源電壓一般在24V以下。不同應(yīng)用領(lǐng)域規(guī)律不同，如PC中常用的是12V、5V、3.3V，模擬電路電源常用5V?15V，數(shù)字電路常用3.3V等。DC/DC轉(zhuǎn)換電路分類DC/DC轉(zhuǎn)換電路主要分為以下三大類：（1）穩(wěn)壓管穩(wěn)壓電路。（2）線性(模擬）穩(wěn)壓電路。（3）開關(guān)型穩(wěn)壓電路。</p><p style="text-indent:25px">DC-DC直流電源對儀器的要求：示波器參數(shù)要求：支持帶寬限制功能：一般示波器都支持20MHz帶寬限制，如：SDS1102CM。探頭要求：為了使接地線盡量短，盡量使用探頭的原裝測試短針，若無原裝測試短針，則須自制短接地線：去除探頭接地線套，用金屬絲自行繞制接地短線，推薦五類線中銅絲，強度適中(還是有些偏軟，有更好的請推薦)。其他候選有焊錫絲、刻刀。選擇1X無衰減檔位，一般無源探頭在1X檔位時，其帶寬限制在 6MHz/10MHz帶寬，如此在前端可有效濾除高頻噪聲的干擾，減小紋波測量影響。改變高頻變壓器的匝數(shù)比和VDz2的穩(wěn)壓值，還可獲得其他輸出電壓值。R2和VDz2五還為12V輸出提供一個假負(fù)載，用以提高輕載時的負(fù)載調(diào)整率。反饋繞組電壓經(jīng)VD3和C4整流濾波后，供給TOP224P所需偏壓。DC-DC直流電源大部分的電源模塊沒有均流功能，不能直接并聯(lián)使用達(dá)到增大輸出功率的效果。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="小功率DC-DC直流電源批發(fā)價格,DC-DC直流電源" src="https://tyunfile.71360.com/WaterMark/UploadFile/baoyixinneng/637397339169870019/975762.png"></div><p style="text-indent:25px">DC-DC直流電源斷路器級差驗收要點： 1) 直流回路嚴(yán)禁采用交流空氣斷路器，應(yīng)采用具有自動脫扣功能的直流斷路器。 2) DC-DC直流電源系統(tǒng)開關(guān)應(yīng)選用較好高分?jǐn)嘀绷鲾嗦菲?，上下級斷路器?yīng)滿足選擇性配合要求，各斷路器應(yīng)配備跳閘報警觸點。 3) 上、下級均為直流斷路器的，按照4級及以上選擇級差配合。 4) 變電站內(nèi)設(shè)置直流斷路器的級數(shù)不宜超過4級。5) 當(dāng)使用交直流兩用空氣斷路器時，其性能必須滿足開斷直流回路短路電流和動作選擇性的要求。6) 采用分層輻射供電時，直流柜至分電柜的饋線斷路器應(yīng)選用具有短時延時特性的直流斷路器。分電柜直流饋線斷路器宜選用直流微型斷路器。7) 各級斷路器的保護(hù)動作電流和動作時間應(yīng)滿足上、下級選擇性配合要求，且應(yīng)有足夠的靈敏度系數(shù)。DC-DC直流電源腳是誤差放大器的輸出端，外接阻容元件用于改善誤差放大器的增益和頻率特性。小功率DC-DC直流電源批發(fā)價格</p><p style="text-indent:25px">DC-DC直流電源并采用可調(diào)穩(wěn)壓管式電路，從而得到滿意平穩(wěn)的輸出電壓。小功率DC-DC直流電源批發(fā)價格</p><p style="text-indent:25px">DC-DCDC-DC直流電源：DCDC轉(zhuǎn)換開關(guān)型穩(wěn)壓電路設(shè)計方案幾種DCDC轉(zhuǎn)換電路都屬于串聯(lián)反饋式穩(wěn)壓電路，在此種工作模式中集成穩(wěn)壓器中調(diào)整管工作在線性放大狀態(tài)，因此當(dāng)負(fù)載電流大時，損耗比較大，即轉(zhuǎn)換效率不高。因此使用集成穩(wěn)壓器的電源電路功率都不會很大，一般只有2-3W，這種設(shè)計方案*適合于小功率電源電路。采用開關(guān)電源芯片設(shè)計的DCDC轉(zhuǎn)換電路轉(zhuǎn)化效率高，適用于較大功率電源電路。目前得到了普遍的應(yīng)用，常用的分為非隔離式的開關(guān)電源與隔離式的開關(guān)電源電路。DCDC轉(zhuǎn)換開關(guān)型穩(wěn)壓電路設(shè)計方案，采用開關(guān)電源芯片設(shè)計的DCDC轉(zhuǎn)換電路轉(zhuǎn)化效率高，適用于較大功率電源電路。目前得到了普遍的應(yīng)用，常用的分為非隔離式的開關(guān)電源與隔離式的開關(guān)電源電路。當(dāng)然開關(guān)電源基本的拓?fù)浒ń祲盒?、升壓型、升降壓型及反激、正激、橋式變化等等。小功率DC-DC直流電源批發(fā)價格</p></p><br /><p>文章來源地址: http://m.cdcfah.com/cp/3154728.html</p></div></div></div></div></div><div id="fyu33ek" class="page-right twoColRt"><div id="8se7dpm" class="box01 margin10 clearfix"><h3><a href="http://m.cdcfah.com/cp/">猜你喜歡</a></h3><div id="nlxtfmt" class="recomPic likePro"><a href="http://m.cdcfah.com/cp/814588.html"><div><img 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