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開關(guān)電源變壓器的漏感闡??/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(zé)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: 16px"> 變壓器是組成開關(guān)電源最罕見元器件之一。開關(guān)電源變壓器的漏感對開關(guān)電源的影響同樣重要，所有變壓器都存在漏感現(xiàn)象，由于不可防止的漏感存在控制開關(guān)切斷的瞬間會發(fā)生反電動勢，很容易把開關(guān)器件過壓擊??漏感還可以與電路中的分布電容及變壓器線圈分布電容組成振蕩回路，使得電路發(fā)生振蕩并向外輻射出電磁能量，從而造成電磁干擾。因此，分析漏感產(chǎn)生的原理和減少漏感的發(fā)生也是開關(guān)變壓器設(shè)計的重要內(nèi)容之一??/span></p>
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<p><span style="font-size: 16px"> 因此??/span><strong><a href="http://linhang.com.cn/Products/PQ2625gaopinbianyaqi.html"><span style="font-size: 16px">開關(guān)電源變壓器</span></a></strong><span style="font-size: 16px">線圈之間存在漏感，因為線圈之間存在漏磁通而產(chǎn)生的。計算出線圈之間的漏磁通量就可以計算出漏感的數(shù)值。要計算變壓器線圈之間存在漏磁通，首先是要知道兩個線圈之間的磁場分布。知道螺旋線圈中的磁場分布與兩塊極板中的電場分布有些相似之處，就是螺旋線圈中磁場強度分布是基本均勻的并且磁場能量基本集中在螺旋線圈之中。另外，計算螺旋線圈之內(nèi)或之外的磁場強度分布時，比擬復(fù)雜的情況可用麥克斯韋定理或??沙定理，而比較簡單的情況可用安培環(huán)路定律或磁路的克希霍夫定律??/span></p>
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