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高頻變壓器初次級繞組怎么加工?</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> 繞組是構(gòu)成與<strong><a href="http://m.cmqp.com.cn/product/product-0001,0015.shtml">高頻變壓??/a></strong>標注的某一電壓值相對應的電氣線路的一組線??在制作的過程??繞組的加工是非常重要??繞組的匝數(shù)不??高頻變壓器的功能電壓也不??高頻變壓器制造初次級繞組是怎么加工的呢?</p>
<div> </div>
<div> 1.初級繞組</div>
<div> </div>
<div> 初級繞組應放在最里層，這樣可使高頻變壓器初級繞組每一匝用線長度最短，從而使整個繞組的用線為最少，這有效地減小了初級繞組自身的分布電容。在通常情況下，變壓器的初級繞組被設計成兩層以下的繞組，可使變壓器的漏感為最小??/div>
<div> </div>
<div> 初級繞組放在最里面，使初級繞組得到了其他繞組的屏蔽，有助于減小變壓器初級繞組和鄰近器件之間電磁噪聲的相互耦合。初級繞組放在最里面，使初級繞組的起始端作為連接開關電源功率晶體管的漏極或集電極驅(qū)動端，可減少變壓器初級對開關電源其他部分電磁騷擾的耦合??/div>
<div> </div>
<div> 2.次級繞組</div>
<div> </div>
<div> 初級繞組繞完，要加繞(3??)層絕緣墊襯再繞制次級繞組。這樣可減小初級繞組和次級繞組之間分布電容的電容量，也增大了初級和次級之間的絕緣強度，符合絕緣耐壓的要求。減小變壓器初級和次級之間的電容有利于減小開關電源輸出端的共模騷擾??/div>
<div> </div>
<div> 如果開關電源的次級有多路輸出，并且輸出之間是不共地的，為了減小漏感，讓功率最大的次級靠近變壓器的初級繞組。如果這個次級繞組只有相對較少幾匝，則為了改進耦合情況，還是應當設法將它布滿完整的一層，如可以采用多根導線并聯(lián)的辦法，有助于改進次級繞組的填充系數(shù)。其他次級繞組緊密的繞在這個次級繞組的上面??/div>
<div> </div>
<div> 當開關電源多路輸出采用共地技術(shù)時，處理方法簡單一些。次級可以采用變壓器抽頭形式輸出，次級繞組間不需要采取絕緣隔離，從而使高頻變壓器的繞制更加緊湊，變壓器的磁耦合得到加強，能夠改善輕載時的穩(wěn)壓性能??/div>
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