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href="http://www.cdcfah.com/cp/">產品供應</a>?<a href="http://www.cdcfah.com/cp/first-_dzyqj/">電子元器件</a>?<a href="http://www.cdcfah.com/cp/second-dzyqj_chuanganqisr/">傳感器</a>?<a href="http://www.cdcfah.com/cp/third-chuanganqisr_dccgq/">電磁傳感器</a>?北京霍爾開關歡迎咨詢華芯霍爾元件廠家供應</p><div id="8gv7gsj" class="leftbox clearfix"><h1>北京霍爾開關歡迎咨詢華芯霍爾元件廠家供應</h1><div id="xgi5roa" class="proBig"><div id="s8lxx3n" class="bigimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UploadFile/wxhxskj/637128652391181641/5238.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="bfmgrik" class="smallimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UploadFile/wxhxskj/637128652391181641/5238.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="dcj4i3a" 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>產品關鍵詞：</span>北京霍爾開關,霍爾開關</p><p><span>***更新：</span>2020-09-22 03:04:39</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="bfrgxj3" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">無錫華芯晟科技有限公司</a></p><p><span>聯(lián)系人：</span>江經理</p><p><span>郵箱: </span>wxhxkj@126.com</p><p><span>電話: </span>15995280887</p><p><span>傳真: </span>0510_88530068</p><p><span>網址: </span></p><p><span>手機: </span>0510-88530068</p><p><span>地址: </span>安鎮(zhèn)街道丹山路88號錫東創(chuàng)融大廈C座603</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="b23ofhd" class="page-proshow02"><p class="title">詳細說明</p><div id="dmjitz8" class="box"><p><p> 霍爾元件應用霍爾效應的半導體。所謂霍爾效應，是指磁場作用于載流金屬導體、半導體中的載流子時，產生橫向電位差的物理現(xiàn)象。金屬的霍爾效應是1879年被美國物理學家霍爾發(fā)現(xiàn)的。當電流通過金屬箔片時，若在垂直于電流的方向施加磁場，則金屬箔片兩側面會出現(xiàn)橫向電位差。半導體中的霍爾效應比金屬箔片中更為明顯，而鐵磁金屬在居里溫度以下將呈極強的霍爾效應。利用霍爾效應可以設計制成多種傳感器?；魻栯娢徊頤H的基本關系為：式中 RH――霍爾系數(shù)；n――單位體積內載流子或自由電子的個數(shù)；q――電子電量；I――通過的電流；B――垂直于I的磁感應強度；d――導體的厚度。對于半導體和鐵磁金屬，霍爾系數(shù)表達式和式（2）不同，北京霍爾開關。由于通電導線周圍存在磁場，其大小和導線中的電流成正比，故可以利用霍爾元件測量出磁場，北京霍爾開關，北京霍爾開關，就可確定導線電流的大小。利用這一原理可以設計制成霍爾電流傳感器。若把霍爾元件置于電場強度為E、磁場強度為H的電磁場中，則在該元件中將產生電流I，元件上同時產生的霍爾電位差和電場強度E成正比，如果再測出該電磁場的磁場強度，則電磁場的功率密度瞬時值P可由確定。華芯十七年專業(yè)做霍爾，提供多種類型的霍爾元件，歡迎咨詢選購。北京霍爾開關</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="北京霍爾開關,霍爾開關" src="http://tyunfile.71360.com/UploadFile/wxhxskj/637128652391181641/5238.jpg"></div><p> 霍爾開關器件按照霍爾開關的感應方式可將它們分為：單極性霍爾開關、雙極性霍爾開關、全極性霍爾開關。單極性霍爾開關的感應方式：磁場的一個磁極靠近它，輸出低電位電壓（低電平）或關的信號，磁場磁極離開它輸出高電位電壓（高電平）或開的信號，但要注意的是，單極性霍爾開關它會指定某磁極感應才有效，一般是正面感應磁場S極，反面感應N極。雙極性霍爾開關的感應方式：因為磁場有兩個磁極N、S（正磁或負磁），所以兩個磁極分別控制雙極性霍爾開關的開和關（高低電平），它一般具有鎖定的作用，也就是說當磁極離開后，霍爾輸出信號不發(fā)生改變，直到另一個磁極感應。另外，雙極性霍爾開關的初始狀態(tài)是隨機輸出，有可能是高電平，也有可能是低電平。全極性霍爾開關的感應方式：全極性霍爾開關的感應方式與單極性霍爾開關的感應方式相似，區(qū)別在于，單極性霍爾開關會指定磁極，而全極性霍爾開關不會指定磁極，任何磁極靠近輸出低電平信號，離開輸出高電平信號。北京霍爾開關***霍爾芯片,高精度低功耗霍爾芯片華芯晟精選各類霍爾芯片,提供高質量產品服務,各類型號霍爾芯片.</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="北京霍爾開關,霍爾開關" src="http://tyunfile.71360.com/UploadFile/wxhxskj/637128652015732422/5698562.jpg"></div><p> 線性霍爾和開關式霍爾可以通用嗎？在轉把上用的霍爾開關，我們把它叫線性霍爾開關。就是說，根據(jù)磁場感應的大小，它的電壓會隨著磁場大小的變化而變化，磁場感應的強度越強，翰出的霍爾電壓就越大；磁場感應的強度越小，翰出的電壓就越小。所以我們在轉動轉把時，電壓可以從由小到大，逐漸加大，或者是逐漸變小。在電機上用的霍爾開關，我們把它叫做開關式霍爾開關。在磁場靠近霍爾開關時，這是霍爾元件直接導通狀態(tài)，輸出比較大電壓。磁場感應離開時，直接進入關閉狀態(tài)，沒有電壓輸出。就像個開關一樣的，保持通斷的功能。不能像轉把霍爾開關那樣，逐步的施加電壓。所以這兩種霍爾開關，因為放的位置不同，所涉及的原理也不太一樣，所以它們是不能互相代。 </p><p> 霍爾元件是由霍爾片、4根引線和殼體組成。霍爾片是一塊矩形半導體單晶薄片（一般為4mm×2mm×），在它的長度方向兩端面上焊有a、b兩根引線，稱為控制電流端引線，通常用紅色導線。其焊接處稱為控制電流極（或稱激勵電流），要求焊接處接觸電阻很小，并呈純電阻，即歐姆接觸（無PN結特性）。在薄片的另兩側端面的中間以點的形式對稱地焊有c、d兩根霍爾輸出引線，通常用綠色導線。其焊接處稱為霍爾電極，要求歐姆接觸，且電極寬度與基片長度之比小于，否則影響輸出?；魻栐臍んw上用非導磁金屬、陶瓷或環(huán)氧樹脂封裝。目前，**常用的霍爾元件材料是鍺（Ge）、硅（Si）、銻化銦（ISb）、砷化銦（lnAs）和不同比例亞砷酸銦和磷酸銦組成的ln型固熔體等半導體材料。值得一提的是，20世紀80年代末出現(xiàn)了一種新型霍爾元件——超晶格結構（砷化鋁/砷化鎵）的霍爾元件，它可以用來測10-T的微磁場。可以說，超晶格霍爾元件是霍爾元件的一個質的飛躍。華芯十六年專業(yè)做霍爾元件,量大從優(yōu)!為客戶提供質量的產品,專業(yè)的技術支持及完善的服務!</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="北京霍爾開關,霍爾開關" src="http://tyunfile.71360.com/UploadFile/wxhxskj/637128652159726563/7947426.jpg"></div><p> 霍爾開關時使用注意事項（上） </p> <p> 1.霍爾是敏感器件，在使用過程以及存儲過程中應注意采取靜電防護措施。 </p> <p> 2.適宜的電源電壓和負載電路及工作溫度是霍爾器件正常工作的先決條件，霍爾器件的供電電壓，負載電流及工作溫度不得超出規(guī)格書中多規(guī)定的范圍。 </p> <p> 3.所用工具，特別是焊接用的電烙鐵，必須嚴格接上地線，以保證電烙鐵不漏電，即電烙鐵的鐵皮是接地的，比較好選用低壓恒溫可調電烙鐵進行焊接。 </p> <p> 4.所有設備都應嚴格接地，并用檢電筆逐個查明確無漏電，才能開始工作。 </p> <p> 5.要求印制板及霍爾器件管腳嚴格經過清潔處理，使它與焊錫有良好的浸潤性。華芯精選各類霍爾元件,提供高質量產品服務,各類型號霍爾元件.霍爾元件一站搞定,價格優(yōu)惠歡迎咨詢!北京霍爾開關</p><p style="text-indent:25px">無錫華芯晟霍爾元件是質量的霍爾元件生產廠家，十七年來一直做霍爾，是霍爾的行業(yè)**企業(yè)。北京霍爾開關</p><p> 如何判斷線性霍爾開關是否損壞？改變磁場的大小線性霍爾開關的好壞當霍爾開關通電，輸出端與電壓表連接時，當磁鐵從遠到近接近線性霍爾開關時，線性霍爾開關的輸出電壓逐漸由小變大。這表明線性霍爾開關是好的。如果磁鐵從遠到近逐漸接近線性霍爾開關，則線性霍爾開關的輸出電壓保持不變，表明線性霍爾開關具有相同的輸出電壓。線性霍爾開關已損壞。線性霍爾開關恒流源電流的改變來判斷線性霍爾開關的質量當線性霍爾開關恒流源的電流由零逐漸變?yōu)轭~定電流（不能超過線性霍爾開關的額定電流），線性霍爾開關的輸出電壓由小逐漸變大，說明線性霍爾開關性能良好。如果線性霍爾開關的恒流從零逐漸變?yōu)轭~定電流，則線性霍爾開關的電壓保持不變，表明線性霍爾開關已損壞。北京霍爾開關</p><p style="text-indent:25px">無錫華芯晟科技有限公司總部位于安鎮(zhèn)街道丹山路88號錫東創(chuàng)融大廈C座603，是一家電子元器件、電子線路板、集成電路的研發(fā)、設計、技術咨詢、技術服務和銷售：自營和代理各類商品及技術的進出口業(yè)務，但國家限定企業(yè)經營和禁止進出口的商品和技術除外。（依法須經批準的項目，經相關部門批準后方可開展經營活動）的公司。無錫華芯科技擁有一支經驗豐富、技術創(chuàng)新的專業(yè)研發(fā)團隊，以高度的專注和執(zhí)著為客戶提供霍爾元件，霍爾開關，霍爾傳感器，電機霍爾。無錫華芯科技致力于把技術上的創(chuàng)新展現(xiàn)成對用戶產品上的貼心，為用戶帶來良好體驗。無錫華芯科技創(chuàng)始人馬佳，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: 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