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交流輸出全橋式開關電源變壓器初、次級線圈匝數(shù)比的計??/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><span style="font-size: 14px;"><span style="font-family: 宋體;"> 大家之前都了??strong>開關電源變壓器</strong>有全橋式還有半橋式之分，其實全橋式里面又有交流輸出全橋式開關電源變壓器和直流輸出全橋式開關電源變壓器，那們它們的匝數(shù)該怎么計算呢？下面就由<a href="http://linhang.com.cn">深圳晨飛電子</a>的技術團隊來為大家講解一下：</span></span></p>
<p><span style="font-size: 14px;"><span style="font-family: 宋體;"> 全橋式變壓器開關電源如果用于DC/AC或AC/AC逆變電源，即把直流逆變成交流，或把交流整流成直流后再逆變成交流，這種逆變電源一般輸出電壓都不需要調(diào)整，工作效率很高??br />
用于逆變的全橋式變壓器開關電源一般輸出電壓uo都是占空比等??.5的方波，由于方波的波形系??有效值與半波平均值之??等于1,因此，方波的有效值Uo與半波平均值Upa相等，并且方波的幅值Up與半波平均值Upa也相等。所以，只要知道輸出電壓的半波平均值就可以知道有效值，再根據(jù)半波平均值，就可以求得半橋式開關電源變壓器初、次級線圈匝數(shù)比??br />
上面我們講解了交流輸出全橋式開關電源變壓器初、次級線圈匝數(shù)比的計算，下面來講講直流輸出電壓非調(diào)整式全橋開關電源變壓器初、次級線圈匝數(shù)比的計算：<br />
直流輸出電壓非調(diào)整式全橋開關電源，就是在DC/AC逆變電源的交流輸出電路后面再接一級整流濾波電路，請參??-48.這種直流輸出電壓非調(diào)整式全橋開關電源的兩組控制開關K1和K4、K2和K3的占空比與DC/AC逆變電源一樣，一般都??.5,整流輸出電壓的有效值Uo與半波平均值Upa基本相等。因此，直流輸出電壓非調(diào)整式全橋開關電源變壓器初、次級線圈匝數(shù)比可直接利用如下公式來計算。即??nbsp; <br />
<img width="462" height="36" alt="" src="/UploadFiles/FCK/1(5).jpg" /><br />
同樣，在低電壓、大電流輸出的情況下，一定要考慮變壓器的工作效率以及整流二極管的電壓降和4個開關器件接通時的電壓降??/span></span></p>
<p><span style="font-size: 14px;"><span style="font-family: 宋體;"> 小編提醒您，在設計開關電源變壓器的時候，一定要從多方面資料進行參考，這樣它設計得最有價值。本篇文章由深圳晨飛電子技術團隊提供，轉(zhuǎn)載請注明。網(wǎng)址：http://linhang.com.cn??br />
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