插件屏蔽電感在音響，電源控制板等大功率器件上應用很廣泛，屏蔽電感具體的作用是什么呢？屏蔽電感是磁屏蔽結構，主要起濾波，振蕩，延遲，阻流，濾波等作用。

對信號(hao)進行屏蔽(bi)，過濾(lv)噪聲，穩定電(dian)(dian)(dian)(dian)流，抑制(zhi)EMI等。其中(zhong)，最常見的(de)(de)作用于電(dian)(dian)(dian)(dian)感的(de)(de)電(dian)(dian)(dian)(dian)容構成(cheng)LC濾(lv)波(bo)電(dian)(dian)(dian)(dian)路。電(dian)(dian)(dian)(dian)容有(you)“DC電(dian)(dian)(dian)(dian)阻(zu)(zu)與(yu)交(jiao)流電(dian)(dian)(dian)(dian)阻(zu)(zu)”的(de)(de)特性，而電(dian)(dian)(dian)(dian)感器有(you)“DC電(dian)(dian)(dian)(dian)阻(zu)(zu)與(yu)交(jiao)流電(dian)(dian)(dian)(dian)阻(zu)(zu)”的(de)(de)功能(neng)。多擾(rao)動的(de)(de)直流電(dian)(dian)(dian)(dian)如果(guo)通(tong)過LC濾(lv)波(bo)電(dian)(dian)(dian)(dian)路，則交(jiao)流擾(rao)動信號(hao)將(jiang)被電(dian)(dian)(dian)(dian)感消耗(hao)成(cheng)熱(re)能(neng)；當相對純DC電(dian)(dian)(dian)(dian)流通(tong)過電(dian)(dian)(dian)(dian)感時，交(jiao)流擾(rao)動信號(hao)將(jiang)變為磁感和熱(re)能(neng)，頻率越(yue)高(gao)(gao)，就越(yue)容易(yi)受到(dao)電(dian)(dian)(dian)(dian)感阻(zu)(zu)抗的(de)(de)抑制(zhi)，從而抑制(zhi)頻率越(yue)高(gao)(gao)的(de)(de)擾(rao)動信號(hao)。

直流DC:所謂的DC指的是(shi)在DC電路中，感應(ying)器(qi)就像電線一樣，不起任何(he)作用。交流電阻：在交流電路中，電感具有(you)阻抗(kang)，也就是(shi)XL，整個電路的電流降低，使交流變得(de)困難。

感(gan)應(ying)器電阻效應(ying)：感(gan)應(ying)線(xian)圈的(de)自感(gan)電動勢隨(sui)著線(xian)圈電流(liu)而(er)改變(bian)。該感(gan)應(ying)器還能屏蔽信號，過濾噪聲(sheng)，穩(wen)定電流(liu)，抑(yi)制電磁干擾。

文章源自：屏蔽電感、貼片電感、貼片電感代理商