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src="https://tyunfile.71360.com/WaterMark/UploadFile/baoyixinneng/637397339005416942/3757188.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="a8fxpmo" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/baoyixinneng/637397339005416942/3757188.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="ishgho2" 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>北京小功率DC-DC直流電源廠家聯(lián)系方式,DC-DC直流電源</p><p><span>***更新：</span>2021-01-23 08:11:09</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="e3olifm" 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="vfhzgip" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="ti8jofr" class="box"><p><p style="text-indent:25px">DC-DC直流電源技術(shù)指標(biāo)：DC-DC直流電源的技術(shù)指標(biāo)：一種是特性指標(biāo)，包括允許輸入電壓、輸出電壓、輸出電流及輸出電壓調(diào)節(jié)范圍等；另一種是質(zhì)量指標(biāo)，用來衡量輸出直流電壓的穩(wěn)定程度，北京小功率DC-DC直流電源廠家聯(lián)系方式，包括穩(wěn)壓系數(shù)（或電壓調(diào)整率）、輸出電阻（或電流調(diào)整率），北京小功率DC-DC直流電源廠家聯(lián)系方式、紋波電壓（周圍與隨機(jī)漂移）。穩(wěn)壓系數(shù)及電壓調(diào)整率：穩(wěn)壓系數(shù)是指在負(fù)載電流、環(huán)境溫度不變的情況下，輸入電壓的相對(duì)變化引起輸出電壓的相對(duì)變化。電壓調(diào)整率是指輸入電壓相對(duì)變化為±10%時(shí)的輸出電壓相對(duì)變化量，北京小功率DC-DC直流電源廠家聯(lián)系方式，穩(wěn)壓系數(shù)和電壓調(diào)整率均說明輸入電壓變化對(duì)輸出電壓的影響，因此只需測試其中之一即可。DC-DC直流電源多對(duì)磁極是按一定的角度均勻分布在一個(gè)圓周上。北京小功率DC-DC直流電源廠家聯(lián)系方式</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="北京小功率DC-DC直流電源廠家聯(lián)系方式,DC-DC直流電源" src="https://tyunfile.71360.com/WaterMark/UploadFile/baoyixinneng/637397339005416942/3757188.png"></div><p style="text-indent:25px">DC-DCDC-DC直流電源工作頻率：一般而言工作頻率越高，輸出紋波噪聲就更小，電源動(dòng)態(tài)響應(yīng)也更好，但是對(duì)元器件特別是磁性材料的要求也越高，成本會(huì)有增加，所以國內(nèi)模塊電源產(chǎn)品開關(guān)頻率多為在300kHz以下，甚至有的只有100kHz左右，這樣就難以滿足負(fù)載變條件下動(dòng)態(tài)響應(yīng)的要求，因此高要求場合應(yīng)用要考慮采用高開關(guān)頻率的產(chǎn)品。另外一方面當(dāng)模塊電源開關(guān)頻率接近信號(hào)工作頻率時(shí)容易引起差拍振蕩，選用時(shí)也要考慮到這一點(diǎn)。隔離度：絕大多數(shù)的電路都必須實(shí)現(xiàn)隔離，即將負(fù)載連同負(fù)載對(duì)本地電源的噪聲與電網(wǎng)的其他負(fù)載和噪聲隔開。只有隔離變換器能夠達(dá)到這個(gè)要求。采用隔離變換器除了實(shí)現(xiàn)上述要求之外，還可以實(shí)現(xiàn)差分形式的輸出，以及雙極型輸出(見圖)。此外，將隔離型變換器的輸出高壓端與負(fù)載的電源地相連，就形成了負(fù)電源。由于電壓參考點(diǎn)不是地，因此負(fù)載可以獲得更高的電壓。在一定時(shí)限內(nèi)(通常是1秒)變換器所能承受的、施加在輸入端和輸出端之間的zui高電壓，稱為變換器的隔離強(qiáng)度。因此，設(shè)計(jì)低噪聲電源時(shí)，應(yīng)該選擇隔離強(qiáng)度高而隔離電容低的DC/DC變換器，以減小泄漏電流。北京小功率DC-DC直流電源廠家聯(lián)系方式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="北京小功率DC-DC直流電源廠家聯(lián)系方式,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電源模塊常見故障及解決方案：入電壓過高針對(duì)電源模塊輸入?yún)?shù)異?！斎腚妷哼^高。這種異常輕則導(dǎo)致系統(tǒng)無法正常工作,重則會(huì)燒毀電路。那么輸入電壓過高通常是哪些原因造成的呢。1.輸出端懸空或無負(fù)載;2.輸出端負(fù)載過輕,輕于10%的額定負(fù)載;3.輸入電壓偏高或干擾電壓。針對(duì)這一類問題,可以通過調(diào)整輸出端的負(fù)載或調(diào)整輸入電壓范圍,具體如下所示:1.確保輸出端不小于少10%的額定負(fù)載,若實(shí)際電路工作中會(huì)有空載現(xiàn)象,就在輸出端并接一個(gè)額定功率10%的假負(fù)載;2.更換一個(gè)合理范圍的輸入電壓,存在干擾電壓時(shí)要考慮在輸入端并上TVS管或穩(wěn)壓管。</p><p style="text-indent:25px">DC-DCDC-DC直流電源：串聯(lián)型穩(wěn)壓電源的電路認(rèn)識(shí)串聯(lián)型穩(wěn)壓電路屬直流穩(wěn)壓電源中的一種，其實(shí)是在三端穩(wěn)壓器出現(xiàn)之前比較常用的直流供電方法，在三端穩(wěn)壓器出現(xiàn)之前，串聯(lián)穩(wěn)壓器通常有OP放大器和穩(wěn)壓二極管構(gòu)成誤差檢測電路，一般電路中OP放大器的反向輸入端子與輸出電壓的檢測信號(hào)相連，正向輸入端子與基準(zhǔn)電壓Vref相連，Vs=Vout*R2/(R1+R2)。由于放大信號(hào)ΔVs為負(fù)值，控制晶體管的基級(jí)電壓下降，因此輸出電壓減小在正常情況下，必有Vref=Vs=Vout*R2/(R1+R2)，調(diào)整R1，R2之比可設(shè)定所需要的輸出電壓值。其實(shí)負(fù)載大小可以把三極管換成達(dá)林頓管等等，這種串聯(lián)型穩(wěn)壓電路做組成的直流穩(wěn)壓電源處理不當(dāng)，極易產(chǎn)生振蕩。現(xiàn)在沒有一定模擬功底的工程師，一般現(xiàn)在不用這種方法，而是直接采用集成的三端穩(wěn)壓電路，進(jìn)行DC/DC轉(zhuǎn)換電路的使用。DC-DC直流電源是一種新研制的小型化電源開關(guān)模塊。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="北京小功率DC-DC直流電源廠家聯(lián)系方式,DC-DC直流電源" src="https://tyunfile.71360.com/WaterMark/UploadFile/baoyixinneng/637397338773776245/4701271.png"></div><p style="text-indent:25px">DC-DC直流電源為什么要濾波：濾波的作用是什么濾波電路的基本作用是讓某種頻率的電流通過或阻止某種頻率的電流通過。濾波電路作用是盡可能減小脈動(dòng)的直流電壓中的交流成分，保留其直流成分，使輸出電壓紋波系數(shù)降低，波形變得比較平滑。整流電路的輸出電壓不是純粹的直流，從示波器觀察整流電路的輸出，與直流相差很**形中含有較大的脈動(dòng)成分，稱為紋波。為獲得比較理想的直流電壓，需要利用具有儲(chǔ)能作用的電抗性元件（如電容、電感）組成的濾波電路來濾除整流電路輸出電壓中的脈動(dòng)成分以獲得直流電壓。對(duì)于電源濾波而言，剛剛只是講了降低交流阻抗這個(gè)作用，實(shí)際上，還有更重要的是降低輸出紋波。對(duì)于干電池來講，輸出本來不含紋波，不需要濾波。但是，就剛剛講的降低交流阻抗這個(gè)角度看，加電容，尤其是在IC電源引腳附近加電容，對(duì)于復(fù)雜電路，還是必要的。DC-DC直流電源輸出電阻及電流調(diào)整率：輸出電阻與放大器的輸出電阻相同。北京小功率DC-DC直流電源廠家聯(lián)系方式</p><p style="text-indent:25px">DC-DC直流電源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)。北京小功率DC-DC直流電源廠家聯(lián)系方式</p><p style="text-indent:25px">DC-DC直流電源和交流電源都有不同的應(yīng)用場合，很多情況下對(duì)于這兩種電源的選擇往往都是根據(jù)用電器對(duì)電源的需求而定。從傳輸?shù)慕嵌葋碇v，目前來看，交流電源比DC-DC直流電源的成本、功耗、傳輸距離等指標(biāo)都好很多。所以涉及到遠(yuǎn)距離輸電的場合，一般都是交流電源，比如我們常用的市電就是220V，50Hz的交流電。之前狹義的交流電源指的是電壓值有正有負(fù)的電源，而電壓值都是正的但是有周期性波動(dòng)的電源被認(rèn)為是有一定紋波的直流電?，F(xiàn)在我看好像交流電源的內(nèi)涵變得延伸了，這種一直是正的但是紋波比較大的也算是交流電，紋波多大就算是交流電，多大算是直流電，似乎并沒有明確的界限。因?yàn)槿绻娴陌阎绷麟娪檬静ㄆ鞣糯笕タ?，可以發(fā)現(xiàn)其實(shí)直流電也是有波動(dòng)的。所以可以比較大膽的認(rèn)為，DC-DC直流電源就是紋波比較小的交流電源。北京小功率DC-DC直流電源廠家聯(lián)系方式</p></p><br /><p>文章來源地址: http://m.cdcfah.com/cp/2974466.html</p></div></div></div></div></div><div id="lvnk8lf" class="page-right twoColRt"><div id="q2qxel8" class="box01 margin10 clearfix"><h3><a href="http://m.cdcfah.com/cp/">猜你喜歡</a></h3><div id="f3p3pho" 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" 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