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class="current"> 當前位置:<a href="http://m.cdcfah.com/">首頁?<a href="http://m.cdcfah.com/cp/">產品供應</a>?<a href="http://m.cdcfah.com/cp/second-_dzyqj/">電子元器件</a>?<a href="http://m.cdcfah.com/cp/third-dzyqj_kkg(jzg)/">可控硅(晶閘管)</a>?淄博MTAC300晶閘管智能模塊供應商淄博正高電氣供應</p><div id="kuacmn8" class="leftbox clearfix"><h1>淄博MTAC300晶閘管智能模塊供應商淄博正高電氣供應</h1><div id="3blnyae" class="proBig"><div id="lvsur8l" class="bigimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UpLoadFile/2019/10/26/16/637077051440509257_baomeng7_2675060.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="wbolm8m" class="smallimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UpLoadFile/2019/10/26/16/637077051440509257_baomeng7_2675060.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="e3ovcov" 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>山東省</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產品關鍵詞：</span>淄博MTAC300晶閘管智能模塊供應商,晶閘管智能模塊</p><p><span>***更新：</span>2020-12-11 04:02:10</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="zolnkm2" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">淄博正高電氣有限公司</a></p><p><span>聯(lián)系人：</span>竇新勇</p><p><span>郵箱: </span>zhenggao168@163.com</p><p><span>電話: </span>15550320286</p><p><span>傳真: </span>0533_7369627</p><p><span>網(wǎng)址: </span></p><p><span>手機: </span>0533-7369626</p><p><span>地址: </span>淄博市臨淄區(qū)桑坡路南首2-20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="3snfcjq" class="page-proshow02"><p class="title">詳細說明</p><div id="rbi2ogs" class="box"><p><p> 金屬封裝晶閘管又分為螺栓形、平板形、圓殼形等多種；塑封晶閘管又分為帶散熱片型和不帶散熱片型兩種。（四）按電流容量分類晶閘管按電流容量可分為大功率晶閘管、**率晶閘管和小功率晶閘管三種。通常，大功率晶閘管多采用金屬殼封裝，而中、小功率晶閘管則多采用塑封或陶瓷封裝。（五）按關斷速度分類晶閘管按其關斷速度可分為普通晶閘管和高頻（快速）晶閘管。晶閘管的工作原理晶閘管T在工作過程中，它的陽極A和陰極K與電源和負載連接，組成晶閘管的主電路，晶閘管的門極G和陰極K與控制晶閘管的裝置連接，組成晶閘管的控制電路。晶閘管的工作條件：1.晶閘管承受反向陽極電壓時，不管門極承受和種電壓，晶閘管都處于關短狀態(tài)。2.晶閘管承受正向陽極電壓時，*在門極承受正向電壓的情況下晶閘管才導通。3.晶閘管在導通情況下，只要有一定的正向陽極電壓，不論門極電壓如何，晶閘管保持導通，即晶閘管導通后，門極失去作用。4.晶閘管在導通情況下，當主回路電壓（或電流）減小到接近于零時，晶閘管關斷。從晶閘管的內部分析工作過程：晶閘管是四層三端器件，它有J1，淄博MTAC300晶閘管智能模塊供應商、J2、J3三個PN結圖1，淄博MTAC300晶閘管智能模塊供應商，可以把它中間的NP分成兩部分，淄博MTAC300晶閘管智能模塊供應商。我公司生產的產品、設備用途非常多。淄博MTAC300晶閘管智能模塊供應商</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="淄博MTAC300晶閘管智能模塊供應商,晶閘管智能模塊" src="http://tyunfile.71360.com/UpLoadFile/2019/10/26/16/637077051440509257_baomeng7_2675060.jpg"></div><p> 這里的電壓差定義為：晶閘管調功器的另外一種接法是三角形連接：晶閘管電阻絲串聯(lián)角接兩種方法的控制方式?jīng)]有區(qū)別，不再贅述。電阻星形接法與三角形接法有什么不同假設有三個電阻絲R1，R2，R3，電阻絲的阻值相等，供電電源為220V對稱三相電源，把三個電阻絲分別接成星形和三角形兩種接法，如果供電電源發(fā)出的電流相等，那么，電阻絲的阻值如何選擇？電阻絲星接上圖中，三個阻值相同的阻抗連接成星形結構，它們構成了對稱三相負載，對于A相電路來說，電阻R流過的電流為：而對于采用三角形連接的電阻，如下圖所示：電阻絲角接線電流Ia等于流經(jīng)電阻R的電流Iab與流經(jīng)電阻R的Iac的和，當三相對稱電源分別接星形接法的對稱電阻網(wǎng)絡與三角形接法的對稱電阻網(wǎng)絡，產生相同的相電流，對應的星形網(wǎng)絡和三角形網(wǎng)絡的電阻值之間的關系：可見，對于三相對稱電源，獲得相同的相電流情況下，如果定義星接網(wǎng)絡電阻值為R，則角接網(wǎng)絡電阻值為3R。而如果把電阻值為R的星接網(wǎng)絡改成三角形連接網(wǎng)絡，則三角形網(wǎng)絡的等效星形網(wǎng)絡電阻為R/3。注意，這里把同樣的電阻，由星接改成角接，得到的結果是把角接等效為星接后，電阻值縮小了三分之一。電阻結構變化對功率的影響在三相電路中。淄博MTAC300晶閘管智能模塊供應商誠摯的歡迎業(yè)界新朋老友走進正高電氣！</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="淄博MTAC300晶閘管智能模塊供應商,晶閘管智能模塊" src="http://tyunfile.71360.com/UpLoadFile/2019/10/26/16/637077051440509257_baomeng7_7436240.jpg"></div><p> 晶閘管智能模塊電流規(guī)格的選取方法 </p> <p> 考慮到晶閘管智能模塊產品一般都是非正弦電流，存在導通角的問題并且負載電流有一定的波動性和不穩(wěn)定因素，且晶閘管芯片抗電流沖擊能力較差，在選取模塊電流規(guī)格時需要留出一定余量。推薦選擇方法可按照以下公式計算： </p> <p> I>K×I負載×U較大∕U實際 </p> <p> K ：安全系數(shù)，阻性負載K= 1.5，感性負載K= 2； </p> <p> I負載：負載流過的較大電流； U實際：負載上的較大電壓； </p> <p> U較大：模塊能輸出的較大電壓；（三相整流模塊為輸入電壓的1.35倍，單相整流模塊為輸入電壓的0.9倍，其余規(guī)格均為1.0倍）； </p> <p> I：需要選擇模塊的較大電流,模塊標稱的電流一定要大于該值。 </p> <p> 例：某系統(tǒng)用三相整流模塊電爐調溫，380V輸入，輸出電流130A，輸出直流電壓可調350V～450V，應選擇什么型號的模塊？ </p> <p> 選擇方法：三相整流模塊，380V輸入，較大輸出直流電壓為380×1.35=513V,電爐為阻性負載,按公式輸出電流應不小于1.5×130×513/350=285.81A,可選取接近（但一定要大于）值，即320A的模塊，型號為:3MTDC320。 </p><p> 以具有自關斷能力，使用方便，是理想的高壓、大電流開關器件。GTO的容量及使用壽命均超過巨型晶體管（GTR），只是工作頻紡比GTR低。目前，GTO已達到3000A、4500V的容量。大功率可關斷晶閘管已用于斬波調速、變頻調速、逆變電源等領域，顯示出強大的生命力?？申P斷晶閘管也屬于PNPN四層三端器件，其結構及等效電路和普通晶閘管相同，因此圖1*繪出GTO典型產品的外形及符號。大功率GTO大都制成模塊形式。盡管GTO與SCR的觸發(fā)導通原理相同，但二者的關斷原理及關斷方式截然不同。這是由于普通晶閘管在導通之后即外于深度飽和狀態(tài)，而GTO在導通后只能達到臨界飽和，所以GTO門極上加負向觸發(fā)信號即可關斷。GTO的一個重要參數(shù)就是關斷增益，βoff，它等于陽極比較大可關斷電流IATM與門極比較大負向電流IGM之比，有公式βoff=IATM/IGMβoff一般為幾倍至幾十倍。βoff值愈大，說明門極電流對陽極電流的控制能力愈強。很顯然，βoff與昌盛的hFE參數(shù)頗有相似之處。下面分別介紹利用萬用表判定GTO電極、檢查GTO的觸發(fā)能力和關斷能力、估測關斷增益βoff的方法。1．判定GTO的電極將萬用表撥至R×1檔，測量任意兩腳間的電阻，*當黑表筆接G極，紅表筆接K極時，電阻呈低阻值。正高電氣不懈追求產品質量，精益求精不斷升級。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="淄博MTAC300晶閘管智能模塊供應商,晶閘管智能模塊" src="http://tyunfile.71360.com/UpLoadFile/2019/10/26/16/637077051441289407_baomeng7_7393123.jpg"></div><p> 并提高了PNP管的電流放大系數(shù)a1,產生更大的極電極電流Ic1流經(jīng)NPN管的發(fā)射結。這樣強烈的正反饋過程迅速進行。從圖3，當a1和a2隨發(fā)射極電流增加而（a1+a2）≈1時，式（1—1）中的分母1-（a1+a2）≈0,因此提高了晶閘管的陽極電流Ia.這時，流過晶閘管的電流完全由主回路的電壓和回路電阻決定。晶閘管已處于正向導通狀態(tài)。式（1—1）中，在晶閘管導通后，1-（a1+a2）≈0,即使此時門極電流Ig=0,晶閘管仍能保持原來的陽極電流Ia而繼續(xù)導通。晶閘管在導通后，門極已失去作用。在晶閘管導通后，如果不斷的減小電源電壓或增大回路電阻，使陽極電流Ia減小到維持電流IH以下時，由于a1和a1迅速下降，當1-（a1+a2）≈0時，晶閘管恢復阻斷狀態(tài)?？申P斷晶閘管GTO（GateTurn-OffThyristor）亦稱門控晶閘管。其主要特點為，當門極加負向觸發(fā)信號時晶閘管能自行關斷。前已述及，普通晶閘管（SCR）靠門極正信號觸發(fā)之后，撤掉信號亦能維持通態(tài)。欲使之關斷，必須切斷電源，使正向電流低于維持電流IH，或施以反向電壓強近關斷。這就需要增加換向電路，不*使設備的體積重量增大，而且會降低效率，產生波形失真和噪聲?？申P斷晶閘管克服了上述缺點，它既保留了普通晶閘管耐壓高、電流大等優(yōu)點。正高電氣交通便利，地理位置優(yōu)越。淄博MTAC300晶閘管智能模塊供應商</p><p style="text-indent:25px">正高電氣具備雄厚的實力和豐富的實踐經(jīng)驗。淄博MTAC300晶閘管智能模塊供應商</p><p> 晶閘管智能模塊的散熱要求 </p> <p> 模塊散熱條件的好壞直接關系到產品的使用壽命和短時過載能力，溫度越低模塊的輸出電流越大，所以在使用中一定要配備散熱器和風機，建議采用帶有過熱保護功能的產品，有水冷散熱條件的優(yōu)先選擇水冷散熱。我們經(jīng)過嚴格測算，確定了不同型號的產品所應該配備的散熱器型號，推薦采用廠家配套的散熱器和風機，用戶自備時按以下原則選?。?</p> <p> 1、軸流風機的風速應大于6m/s ； </p> <p> 2、一定要能保證模塊正常工作時散熱底板溫度不大于 80℃； </p> <p> 3、模塊負載較輕時，可減小散熱器的大小或采用自然冷卻； </p> <p> 4、采用自然方式冷卻時散熱器周圍的空氣能實現(xiàn)對流并適當增大散熱器面積； </p> <p> 5、所有緊固模塊的螺釘一定要擰緊，壓線端子連接牢固，以減少次生熱量的產生，模塊底板和散熱器之間一定要要涂敷一層導熱硅脂或墊上一片底板大小的導熱墊，以達到良好散熱效果。淄博MTAC300晶閘管智能模塊供應商</p><p style="text-indent:25px">淄博正高電氣有限公司致力于電子元器件，是一家生產型的公司。正高電氣供應致力于為客戶提供良好的可控硅模塊，晶閘管智能模塊，觸發(fā)板，電力調整器，一切以用戶需求為中心，深受廣大客戶的歡迎。公司注重以質量為中心，以服務為理念，秉持誠信為本的理念，打造電子元器件良好品牌。正高電氣供應立足于全國市場，依托強大的研發(fā)實力，融合前沿的技術理念，飛快響應客戶的變化需求。</p></p><br /><p>文章來源地址: http://m.cdcfah.com/cp/2353907.html</p></div></div></div></div></div><div id="nspbt8q" class="page-right twoColRt"><div id="dnpmzqs" class="box01 margin10 clearfix"><h3><a href="http://m.cdcfah.com/cp/">猜你喜歡</a></h3><div id="qaxuwdk" 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配件哪家強信息推薦自業(yè)物資供應" class="vcenter" 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