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共模电感-UU?</h4>
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产品简介： 共模电感
共模电感(CommonmodeChoke)，常用于开关电源中过滤共模的电磁干扰信号。在板卡设计中，共模电感也是起EMI滤波的作用，用于抑制高速信号线产生的电磁波向外辐射发射?
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<strong>共模电感<br />
<br />
</strong> 共模电感(CommonmodeChoke)，常用于开关电源中过滤共模的电磁干扰信号。在板卡设计中，共模电感也是起EMI滤波的作用，用于抑制高速信号线产生的电磁波向外辐射发射?br />
<br />
<strong> 工作原理?br />
<br />
</strong> 共模电感由两个线圈绕在同一铁芯上，匝数和相位都相同(绕制反向)。这样，当电路中的正常电流流经共模电感时，电流在同相位绕制的电感线圈中产生反向的磁场而相互抵消，此时正常信号电流主要受线圈电阻的影响(和少量因漏感造成的阻?；当有共模电流流经线圈时，由于共模电流的同向性，会在线圈内产生同向的磁场而增大线圈的感抗，使线圈表现为高阻抗，产生较强的阻尼效果，以此衰减共模电流，达到滤波的目的?br />
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