產品展示骨架線圈(quan)，電(dian)感線圈(quan)，玩具線圈(quan)，音響(xiang)線圈(quan)
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電感(gan)線圈定制：劉軍13412039915 13423012071 0769-86761639
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什(shen)么是電感器(qi),它在電路中有什(shen)么作用？t如何運用的?
電(dian)(dian)(dian)感是衡量線(xian)(xian)(xian)圈(quan)(quan)產(chan)生(sheng)電(dian)(dian)(dian)磁(ci)感應能(neng)力的(de)(de)物(wu)理量。給一(yi)個線(xian)(xian)(xian)圈(quan)(quan)通(tong)(tong)(tong)入(ru)電(dian)(dian)(dian)流，線(xian)(xian)(xian)圈(quan)(quan)周圍(wei)就(jiu)會產(chan)生(sheng)磁(ci)場，線(xian)(xian)(xian)圈(quan)(quan)就(jiu)有(you)磁(ci)通(tong)(tong)(tong)量通(tong)(tong)(tong)過(guo)。通(tong)(tong)(tong)入(ru)線(xian)(xian)(xian)圈(quan)(quan)的(de)(de)電(dian)(dian)(dian)源越(yue)大(da)，磁(ci)場就(jiu)越(yue)強，通(tong)(tong)(tong)過(guo)線(xian)(xian)(xian)圈(quan)(quan)的(de)(de)磁(ci)通(tong)(tong)(tong)量就(jiu)越(yue)大(da)。實驗證明，通(tong)(tong)(tong)過(guo)線(xian)(xian)(xian)圈(quan)(quan)的(de)(de)磁(ci)通(tong)(tong)(tong)量和通(tong)(tong)(tong)入(ru)的(de)(de)電(dian)(dian)(dian)流是成正比的(de)(de)，它們的(de)(de)比值叫(jiao)做(zuo)自感系數，也(ye)叫(jiao)做(zuo)電(dian)(dian)(dian)感。如果(guo)通(tong)(tong)(tong)過(guo)線(xian)(xian)(xian)圈(quan)(quan)的(de)(de)磁(ci)通(tong)(tong)(tong)量用φ表示，電流用I表示，電感用L表示，那(nei)么
L＝φ／I
電感的單位是亨（H），也常用(yong)毫(hao)亨（mH）或微亨（uH）做單位。1H=1000mH，1H=1000000uH。
電感只能(neng)對(dui)非穩恒電流起作用，它(ta)的特點兩端電壓(ya)正比于(yu)通過他(ta)的電流的瞬時變(bian)化率（導數），比例(li)系數就是它(ta)的“自感”
電感起作用的原(yuan)因(yin)是(shi)它(ta)(ta)在通過非(fei)穩恒(heng)電流時產(chan)生(sheng)(sheng)變(bian)化的磁(ci)場(chang)，而(er)這個磁(ci)場(chang)又會反過來(lai)影響電流，所以，這么說來(lai)，任何一個導(dao)體，只要它(ta)(ta)通過非(fei)穩恒(heng)電流，就會產(chan)生(sheng)(sheng)變(bian)化的磁(ci)場(chang)，就會反過來(lai)影響電流，所以任何導(dao)體都會有自感現象產(chan)生(sheng)(sheng)
在主板上可(ke)以(yi)看(kan)到很多銅線纏繞(rao)的線圈，這(zhe)個線圈就(jiu)叫電(dian)(dian)(dian)感(gan)，電(dian)(dian)(dian)感(gan)主要分(fen)為磁心電(dian)(dian)(dian)感(gan)和空(kong)心電(dian)(dian)(dian)感(gan)兩種，磁心電(dian)(dian)(dian)感(gan)電(dian)(dian)(dian)感(gan)量(liang)大常(chang)用在濾波電(dian)(dian)(dian)路，空(kong)心電(dian)(dian)(dian)感(gan)電(dian)(dian)(dian)感(gan)量(liang)較小，常(chang)用于高頻電(dian)(dian)(dian)路。
電(dian)(dian)(dian)感的(de)特(te)性(xing)(xing)與電(dian)(dian)(dian)容(rong)的(de)特(te)性(xing)(xing)正好相(xiang)反(fan)，它具(ju)有阻止交流(liu)電(dian)(dian)(dian)通(tong)過而讓直流(liu)電(dian)(dian)(dian)順(shun)利通(tong)過的(de)特(te)性(xing)(xing)。電(dian)(dian)(dian)感的(de)特(te)性(xing)(xing)是通(tong)直流(liu)、阻交流(liu)，頻(pin)率(lv)越高，線圈阻抗越大。電(dian)(dian)(dian)感器在電(dian)(dian)(dian)路(lu)中經常和電(dian)(dian)(dian)容(rong)一起工作，構(gou)成LC濾波器、LC振蕩器(qi)(qi)等。另外，人們還利用電(dian)感的特性，制造(zao)了阻流圈、變壓器(qi)(qi)、繼電(dian)器(qi)(qi)等。
【電感器的(de)種類】
按(an)照外形，電感(gan)器可(ke)分為空心電感(gan)器(空心線圈)與實心(xin)電感器(實心線(xian)圈)。按(an)照(zhao)工作性質，電(dian)感(gan)器可分為高頻電(dian)感(gan)器(各種天線(xian)線(xian)圈、振(zhen)蕩線(xian)圈)和低頻電感器(各(ge)種扼流圈、濾波(bo)線圈等(deng))。按(an)照(zhao)(zhao)封裝(zhuang)形式(shi)，電(dian)(dian)(dian)感(gan)器(qi)可(ke)分(fen)為(wei)普通電(dian)(dian)(dian)感(gan)器(qi)、色環(huan)(huan)電(dian)(dian)(dian)感(gan)器(qi)、環(huan)(huan)氧樹脂(zhi)電(dian)(dian)(dian)感(gan)器(qi)、貼片電(dian)(dian)(dian)感(gan)器(qi)等。按(an)照(zhao)(zhao)電(dian)(dian)(dian)感(gan)量，電(dian)(dian)(dian)感(gan)器(qi)可(ke)分(fen)為(wei)固(gu)定電(dian)(dian)(dian)感(gan)器(qi)和可(ke)調電(dian)(dian)(dian)感(gan)器(qi)。
電感作用：通(tong)直流，阻交流：濾波、振蕩、延遲、陷波
在電(dian)(dian)(dian)(dian)(dian)子(zi)線路中，電(dian)(dian)(dian)(dian)(dian)感線圈對交流有限流作用，它(ta)與電(dian)(dian)(dian)(dian)(dian)阻器(qi)或(huo)電(dian)(dian)(dian)(dian)(dian)容(rong)器(qi)能組成(cheng)高通(tong)或(huo)低通(tong)濾波器(qi)、移相電(dian)(dian)(dian)(dian)(dian)路及(ji)諧振電(dian)(dian)(dian)(dian)(dian)路等(deng)；變壓器(qi)可以進行交流耦合、變壓、變流和阻抗變換等(deng)