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MOSFETS </a> </div> </div> <div class="rig_con"> <div class="top"> <h1 class="title"> 整流器的工作原理 </h1> <div class="meg"> <div class="firsts">發布時間：2021-08-04</div> <div class="">已被瀏覽：<span>2928</span>次</div> <div class="shape"> <span>分享到：</span> <div class="bdsharebuttonbox" style="display:inline-block;vertical-align:middle;"><a href="#" class="bds_more" data-cmd="more"></a><a href="#" class="bds_qzone" data-cmd="qzone" title="分享到QQ空間"></a><a href="#" class="bds_tsina" data-cmd="tsina" title="分享到新浪微博"></a><a href="#" class="bds_sqq" data-cmd="sqq" title="分享到QQ好友"></a><a href="#" class="bds_weixin" data-cmd="weixin" title="分享到微信"></a><a href="#" class="bds_renren" data-cmd="renren" title="分享到人人網"></a></div> <script> window._bd_share_config={"common":{"bdSnsKey":{},"bdText":"","bdMini":"2","bdMiniList":false,"bdPic":"","bdStyle":"0","bdSize":"16"},"share":{}};with(document)0[(getElementsByTagName('head')[0]||body).appendChild(createElement('script')).src='http://bdimg.share.baidu.com/static/api/js/share.js?v=89860593.js?cdnversion='+~(-new Date()/36e5)]; </script> </div> </div> </div> <div class="con"> <span style="font-family:新宋體,arial;"><span style="font-size:16px;"><span style="line-height:200%;">前言：整流器英語：rectifier，是指將交流電轉換為直流電的裝置，可用于供電裝置和無線電信號的檢測等。整流器由真空管、起火管、固體硅半導體二極管、汞弧等制成。在備用UPS只需充電電池，不需要負荷供電，只需充電機。在雙重變換UPS中，該裝置為變頻器供電，也為電池充電，因此被稱為整流器/充電機。<br /> <br /> 整流器工作原理<br /> 汽車發電機產生的交流電通過整流器變成直流電，但波形仍有不規則波動，直接影響車輛點火的準確性；輸出電壓不能保持相對恒定，導致火花塞每次點火的能量差異，容易使車輛發動機抖動，導致換檔、加速緩慢、怠速不穩定、車輛空調效率低下。從而大大降低了車載電氣設備的性能和使用壽命；此外，老年汽車的電路系統老化，電路阻力變高，對車輛的影響越來越明顯。電子整流器的作用是幫助汽車消除雜波干擾，穩定輸出電壓，提高電源系統的瞬時放電能力，增加扭矩輸出，加快油門反應，延長電池使用壽命，縮短汽車發動機啟動時間，提高點火效率，尤其是對于小排量汽車。<br /> <br /> 半導體PN結在正向偏置時電流大，反向偏置時電流小。整流二極管是利用PN結的這種單向導電特性將交流電流變成直流的PN結二極管。通常，將電流容量在1安裝以下的設備稱為整流二極管，1安裝以上的設備稱為整流器。常用的半導體整流器有硅整流器和硒整流器，產品規格多，電壓從幾十伏到幾千伏，電流從幾千伏到幾千伏。整流器廣泛應用于各種形式的整流電源。大功率整流電源要求整流器電流容量大，破壞電壓高，散熱性能好，但該設備結合面積大，結合容量大，工作頻率低，一般在數十千赫以下。硅材料禁帶寬度大，導熱性能好，適合制造大功率整流裝置。高壓硅堆經常用于高壓整流裝置。它由多個整流裝置的管芯串聯組成，其反向耐壓由管芯的耐壓和串聯管芯的數量決定，最高耐壓可達數百千伏。如果高頻整流電路用于高頻，當交流電壓的周期與整流器通向關閉狀態的恢復時間相同時，整流器不再對高頻電壓發揮整流作用。為了滿足高頻工作的需要，硅整流器通常采用摻金的方法，以縮短注入少量載流子的壽命，從而減少恢復時間。<br /> <br /> 為了減少部件過壓破壞的可能性，提高整流裝置的可靠性，可以采用硅雪崩整流裝置。在這種設備中，當反向電壓超過允許峰值時，整個PN結會發生均勻的雪崩，設備可以在高壓大電流下工作，因此可以承受相當大的反向浪涌功率。制作該設備時，材料缺陷少，電阻率均勻，結面平坦，露出結區應適當保護，避免表面破壞。硒整流器抗過載容量大，承受反向浪涌的能力也強。<br /> <br /> 在以大功率二極管或晶閘管為基礎的兩種基本類型的整流器中，電網的高壓交流功率通過整流器變換為直流功率。提到未來(不久或遙遠)的其他類型的整流器:基于不可控二極管尖端產品的斬波器、斬波DC/DC變換器或電流源逆變有源整流器。很明顯，這種最新型的整流器在技術上包含了很多要開發的內容，但它可以顯示出它的優點，比如它在電網上加載的功率因數很小。<br /> <br /> 以上內容主要介紹分享整流器的工作原理，如需要整流器相關產品請留言聯系或<span style="color:#FF0000;">撥打：0755-28100016；</span>海量整流器現貨庫存，規格齊全。歡迎來咨詢價格或拿樣測試。<br /> <br /> 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