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如何選擇開關(guān)電源變壓器以及有什么作??/h3>
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<span>文章出處??a href=""><a >深圳市晨飛電子有限公??/a></a></span><span>網(wǎng)責任編輯：<a >NSW</a></span><span>作者：<a >NSW</a></span><span>人氣??span
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<p><a href="http://m.linhang.com.cn/"><strong>開關(guān)電源變壓器</strong></a>的功能主要是功率傳送、電壓變換和絕緣隔離，作為一種主要的軟磁電磁元件，在電源技術(shù)中和電力電子技術(shù)中得到廣泛的應(yīng)用。根據(jù)傳送功率的大小，電源變壓器可以分為幾檔??0kVA以上為大功率??0kVA??.5kVA為中功率??.5kVA??5VA為小功率??5VA以下為微功率。傳送功率不同，電源變壓器的設(shè)計也不一樣，<br />
<br />
開關(guān)電源中的變壓器與一般的變壓器的不同之處在于它有一個反饋繞組，這個反饋繞組提供一個正反饋信號給PWM IC使其與初級繞組一起產(chǎn)生高頻振蕩，使得進入變壓器初級繞組的直流帶有很大的交流成分，這個高頻交流成分經(jīng)變壓器磁心隔離后在次級形成一個純凈的高頻交流電，整流濾波后供給用電設(shè)備??br />
因為頻率很高，比起普通工頻電源，開關(guān)電源中的變壓器與濾波電容都大為減小??/p>
<p style="text-align: center;"><br />
<br />
<img width="281" height="281" src="http://m.linhang.com.cn/UploadFiles/Product/20120703160354_67923.jpg" alt="ER40高頻變壓器立?? title="ER40高頻變壓器立?? /></p>
<p><br />
在反激式電路中, 當開關(guān)管導通時,變壓器把電能轉(zhuǎn)換成磁場能儲存起來,當開關(guān)管截止時則釋放出來. 在正激式電路中,當開關(guān)管導通時,輸入電壓直接向負載供給并把能量儲存在儲能電感??當開關(guān)管截止??再由儲能電感進行??nbsp; 流向負載傳遞??br />
<br />
<br />
開關(guān)電源變壓器的這些編號都是廠家自己編寫的，各個廠家的編號讀法都不一樣，變壓器只有磁芯和骨架的有統(tǒng)一的型號，沒有繞線的具體參數(shù)規(guī)范的，繞線都是設(shè)計者自己設(shè)計的，EE16是變壓器骨架的型號，這是個很常用的型號。變壓器的參數(shù)要根據(jù)你的輸入電壓范圍和輸出電壓來確定，一般都是按照全電壓100-240V（注：還要加上這個電壓正??0%的偏差）來設(shè)計的<br />
<br />
<br />
<br />
以上就是為大家總結(jié)的有關(guān)開關(guān)電源變壓器的作用以及如何選擇的介紹，希望可以幫到大家，如果想了解更多的有關(guān)開關(guān)電源變壓器的內(nèi)容，那就點擊<a href="http://m.linhang.com.cn/news/">開關(guān)電源變壓器資訊</a>吧！<br />
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