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class="proBig"><div id="kzoaxel" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/wxxrdl/637470063767846664/2048639.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="8yvxeqh" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/wxxrdl/637470063767846664/2048639.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="tcu3afr" 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>江蘇省</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關鍵詞：</span>寧波耦合電容器廠家,電容器</p><p><span>***更新：</span>2021-01-27 08:23:05</p><p><span id="click" >瀏覽次數(shù)：3次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="ncjdk8l" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">無錫市錫容電力電器有限公司</a></p><p><span>聯(lián)系人：</span>許小梅</p><p><span>郵箱: </span>yyxxm76@163.com</p><p><span>電話: </span>13915286892</p><p><span>傳真: </span>0510_83260939</p><p><span>網(wǎng)址: </span>http://www.wxxrdl.com</p><p><span>手機: </span>0510-85468178</p><p><span>地址: </span>洛社鎮(zhèn)石塘灣張石路4號</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="txu7qxe" class="page-proshow02"><p class="title">詳細說明</p><div id="k23n7nc" class="box"><p><p> 經(jīng)常會要求輸出正負對稱無直流分量的波形，因為直流不不攜帶信息（直流也可以攜帶信息，但相對于交流攜帶信息太少），而且還會增加系統(tǒng)的功耗或者導致系統(tǒng)飽和。舉個例子：我們用的DA芯片基本都是單極性的，只能輸出正值0V以上的波形，那么怎么變成正負對稱的呢？全部是單電源的系統(tǒng)怎么輸出雙極性的波形呢？如下圖所示，選擇一個合適的隔值電容C1串連在系統(tǒng)中，就可以解決這些問題。通常隔直電容容值都比較大，那么到底有沒有一個明確的選擇標準呢？當然還是有的，隔直電容需要根據(jù)頻率和負載電阻來選擇。如果你仔細觀察的話，隔直電容和負載電阻其實還是構成了一個分壓網(wǎng)絡，可以歸類到高通濾波器。在濾波電容那里我們得到一個結論就是當電阻的阻抗等于電容的阻抗的時候，剛好在通帶的截止頻率處，此時，我們這里只是想把直流分量去掉，對交流分量不作衰減，因此需要讓電容的阻抗遠小于電阻的阻抗，這樣交流信號在負載電阻上分到的電壓就遠大于電容上的電壓，即需要的交流電壓全部加在負載上，此時交流分量。知道了怎么利用電容把非對稱的波形變成對稱的了之后，寧波耦合電容器廠家，反過來怎么給對稱的波形，加一個直流分量呢？這里的電容C1也叫做耦合電容，寧波耦合電容器廠家，寧波耦合電容器廠家。RFM電容器質量哪家好，歡迎來電咨詢，無錫市錫容電力電器有限公司。寧波耦合電容器廠家</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="寧波耦合電容器廠家,電容器" src="https://tyunfile.71360.com/WaterMark/UploadFile/wxxrdl/637470063767846664/2048639.png"></div><p> 那么為什么大電容不能濾高頻呢，不是電容越大頻率越高，阻抗就越小，濾波效果就越好嗎？那電源去耦那里直接用一個大容量又便宜的電解電容不就解決了嗎？為什么一般的芯片管腳都用兩個一大一小的電容甚至有些射頻芯片還用4個呢？通過下面的這張不同容值的電容阻抗隨頻率變化的圖就可以看出了，前面在延伸閱讀那里有提到，實際的電容模型，存在串聯(lián)電感，因此阻抗不會隨著頻率升高一直下降，存在一個諧振點，過了諧振點電容器整體呈感性，隨著頻率升高阻抗變大。電容越大串聯(lián)電感就越大，諧振頻率就越低，導致大容量的電容在高頻的時候還沒小電容阻抗低，也就是大電容在高頻濾波效果不如小電容。4儲能電容儲能電容一種是用在電源入口出，或者大功率器件旁邊，為了減少因為功率器件突然工作產(chǎn)生時，電源響應速度不夠，而帶來電壓波動。還有一種是在開關電源中和電感一起作為儲能元件使用?？梢园逊€(wěn)壓電源想象成為如下的一種情形：當試圖從一個直徑較大的自來水管中取出連續(xù)不斷的且較小的水流時，可以采用兩種策略：一種是使用一個轉接閥門，并將閥門開啟在較小位置，這就是線性電源的工作原理（可以將閥門看作晶體管）。線性電源的電壓調整晶體管上承受著很大的“壓力”。金華RFM電容器供貨商AAM電容器質量哪家好，歡迎來電咨詢，無錫市錫容電力電器有限公司。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="寧波耦合電容器廠家,電容器" src="https://tyunfile.71360.com/WaterMark/UploadFile/wxxrdl/637470059449240428/7537562.png"></div><p>可以看出：·電容器充放電過程電量呈指數(shù)變化，越變越慢·電阻不變的情況下，隨著電容大小的增加，電容器充放電時間增加，儲存的能量也增加。DRAM濾波器相關應用1存儲數(shù)據(jù)動態(tài)易失性存儲器(DRAM)：利用集成的電容陣列存儲數(shù)據(jù)，電容充滿電就是1，放完電就是0。2電源去耦電容的應用，防止發(fā)生不可預測的反饋，影響下一級放大器或其它電路正常工作。圖丨去耦電路·各種CPU、SOC、ASIC的周圍、背面放置了大量的電容以保持供電電壓的穩(wěn)定?！C工作時，不同時刻需要的工作電流是不一樣的，因此也需要大量的去耦電容來保證工作電壓的穩(wěn)定。3耦合隔直設計電路時，有些情況下，只希望傳遞交流信號，不希望傳遞直流信號，這時候可以使用串聯(lián)電容來耦合信號。</p><p> 濾波功能利用的是電容的阻抗隨頻率變化的特性（前面說過電容是一個跟電阻差了90度并且隨著頻率變化的器件），再利用電阻篇講的分壓原理，就可以構成簡單的無源RC濾波器了。濾波指的是濾出不需要頻率的波形,濾波器的類型有低通、高通、帶通、帶阻。舉個例子：設計一個頻率為1Kz的一階低無源低通RC濾波器。先確定濾波器的形狀和電容的大小，然后再求出電阻的值。首先電容不可能是串聯(lián)在電路中，如果串聯(lián)在電路中那么直流沒法通過，那么就不是低通濾波器了。因此確定了如圖所示的分壓模式。電容的選取，有很多講究。需要要根據(jù)輸入輸出阻抗，濾波器要求的精度，頻率大小，現(xiàn)有電容器種類等選擇。這里先選擇一個100nF的電容，因為高精度的電容容值都不大，并且1Kz頻率下100nF電容的阻抗約等于，電阻在1K-10K之間是工程師常用的，因為阻值在這個范圍電阻的功耗不大，并且熱噪聲也相對較?。娮柙酱鬅嵩肼曉酱螅?。因此先確定電容為100nF。那么可能有人會問，為什么不先確定電阻，再選電容呢？這就要考慮實際情況了，因為電阻的種類比電容多很多，選取相對容易，因此這里要先定電容，再根據(jù)電容的阻抗選取電阻。接下來讓我們分壓公式。金華電容器質量哪家好，歡迎來電咨詢，無錫市錫容電力電器有限公司。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="寧波耦合電容器廠家,電容器" src="https://tyunfile.71360.com/WaterMark/UploadFile/wxxrdl/637470074561813552/6287450.png"></div><p> 1選型規(guī)范鋁電解電容器選型規(guī)范(1)額定工作電壓和標稱容量：選擇標準值。(2)額定上限工作溫度：推薦105C°。(3)推薦電解質結構類型：液體電解質。(4)推薦結構類型：小型引線型。(5)極限條件下工作壽命：推薦1000小時(普通級)，在電源或特殊要求時可選用長壽命級鋁電容器。(6)盡量選用網(wǎng)上現(xiàn)有項目，對新申請項目應嚴格控制。鉭電解電容器選型規(guī)范(1)推薦類型：固體燒結型。(2)標稱容量和額定電壓：選擇標準值。(3)貼片化。(4)推薦容量偏差：±10%。(5)外形尺寸(mm)：3216、3528、6032、7343(7343H)。(6)盡可能采用網(wǎng)上現(xiàn)有項目，對新申請項目嚴格控制。金膜電容器選型規(guī)范(1)推薦結構：金屬化薄膜。(2)推薦介質：聚酯和聚丙烯。(3)推薦容差：±10%(或5%)。(4)推薦封裝：塑料封裝(由于早期選型集中在環(huán)氧封裝，使網(wǎng)上項目主要為環(huán)氧封裝的電容器，新申請項目必須為塑料封裝)。(5)盡量采用網(wǎng)上項目，對新申請項目嚴格控制。獨石電容器選型規(guī)范(1)在能采用片狀電容器或其它電容器的情況下不使用插裝的獨石電容器，插裝的獨石電容器屬逐步淘汰的電容器類別。(2)停止新項目的申請。瓷介電容器選型規(guī)范(1)在能采用片狀電容器的情況下不使用插裝的瓷介電容器。舟山電容器質量哪家好，歡迎來電咨詢，無錫市錫容電力電器有限公司。南通BFM電容器價格表</p><p style="text-indent:25px">南京電容器質量哪家好，歡迎來電咨詢，無錫市錫容電力電器有限公司。寧波耦合電容器廠家</p><p> 利用硅油浸漬的聚酯薄膜與紙復合介質制造成的電容器即為苯甲基硅油浸膜紙復合介質電容器。硅油與電容器紙具有良好的相容性，由于硅油浸紙的局部放電熄滅場強要比電容器油浸紙高四倍左右，能夠在過電壓之后迅速恢復良好的絕緣性，從而延長電容器的使用壽命。這種電容器能夠讓電力產(chǎn)品能夠在-40℃~+125℃的溫度環(huán)境下正常運行。但是，硅油的耐電強度要比電容器油的低而且價格也相對比較貴，所以這種電容器的使用范圍具有一定的局限性。金屬化聚丙烯薄膜干式電容器目前，金屬化聚丙烯薄膜是國內(nèi)外使用為的電容器薄膜。電容器制造廠家近些年來對于研究高溫聚丙烯薄膜也投入了一定的人力和物力。研究高溫聚丙烯薄膜的目的是為了彌補金屬化聚丙烯薄膜電容器高運行溫度大約為+85℃的缺陷?，F(xiàn)在，國外的生產(chǎn)廠家已經(jīng)研發(fā)出了耐高溫的聚丙烯薄膜，能夠將聚丙烯薄膜運行時的溫度上限提高至+105℃，這是一個重大突破。利用耐高溫聚丙烯薄膜制造的金屬化聚丙烯薄膜電容器的工作溫度為-55℃~+125℃，長期運行的工作溫度為+105℃。但是，金屬化聚丙烯薄膜電容器也具有一定的局限性，當其受到頻繁的過電壓沖擊時，頻繁的自愈和局部放電的長期作用會使電容器過早失效，縮減其使用壽命。寧波耦合電容器廠家</p><p style="text-indent:25px">無錫市錫容電力電器有限公司總部位于洛社鎮(zhèn)石塘灣張石路4號，是一家電力電器及電器設備、電容式電壓互感器、電流互感器的制造、加工;，自營和代理各類商品及技術的進出口業(yè) 的制造、加工;，自營和代理各類商品及技術的進出口業(yè)務(國家限定企業(yè)經(jīng)營或禁止進出口的商品和技術除務(國家限定企業(yè)經(jīng)營或禁止進出口的商品和技術除外)。( 依法須經(jīng)批準的項目，經(jīng)相關部門批準后方可外)。( 依法須經(jīng)批準的項目，經(jīng)相關部門批準后方可開展經(jīng)營活動)的公司。無錫錫容電力電器擁有一支經(jīng)驗豐富、技術創(chuàng)新的專業(yè)研發(fā)團隊，以高度的專注和執(zhí)著為客戶提供高壓并聯(lián)電容器，無功補償成套裝置，電容式電壓互感器，電流互感器。無錫錫容電力電器不斷開拓創(chuàng)新，追求出色，以技術為先導，以產(chǎn)品為平臺，以應用為重點，以服務為保證，不斷為客戶創(chuàng)造更高價值，提供更優(yōu)服務。無錫錫容電力電器創(chuàng)始人許錫海，始終關注客戶，創(chuàng)新科技，竭誠為客戶提供良好的服務。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/3034497.html</p></div></div></div></div></div><div id="f39t4ik" class="page-right twoColRt"><div id="ap8ethn" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="zj8ysyv" 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="lacbc2i" class="recomPic likePro"><a 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