平波(bo)(bo)(bo)電(dian)(dian)(dian)(dian)抗器(qi)用(yong)于(yu)整流(liu)以后的(de)(de)(de)直(zhi)流(liu)回路中(zhong)。整流(liu)電(dian)(dian)(dian)(dian)路的(de)(de)(de)脈波(bo)(bo)(bo)數總是(shi)(shi)有(you)限的(de)(de)(de)，在(zai)輸(shu)出的(de)(de)(de)整直(zhi)電(dian)(dian)(dian)(dian)壓中(zhong)總是(shi)(shi)有(you)紋(wen)波(bo)(bo)(bo)的(de)(de)(de)。這種紋(wen)波(bo)(bo)(bo)往往是(shi)(shi)有(you)害的(de)(de)(de)，需要(yao)由(you)平波(bo)(bo)(bo)電(dian)(dian)(dian)(dian)抗器(qi)加以抑制。直(zhi)流(liu)輸(shu)電(dian)(dian)(dian)(dian)的(de)(de)(de)換(huan)流(liu)站都裝有(you)平波(bo)(bo)(bo)電(dian)(dian)(dian)(dian)抗器(qi)，使(shi)輸(shu)出的(de)(de)(de)直(zhi)流(liu)接(jie)近于(yu)理想直(zhi)流(liu)。直(zhi)流(liu)供電(dian)(dian)(dian)(dian)的(de)(de)(de)晶(jing)閘管(guan)電(dian)(dian)(dian)(dian)氣(qi)傳動中(zhong)，平波(bo)(bo)(bo)電(dian)(dian)(dian)(dian)抗器(qi)也是(shi)(shi)不可少的(de)(de)(de)。電(dian)(dian)(dian)(dian)抗器(qi)也叫電(dian)(dian)(dian)(dian)感(gan)器(qi)，一個(ge)導體(ti)通電(dian)(dian)(dian)(dian)時就(jiu)會在(zai)其(qi)所(suo)占據的(de)(de)(de)一定空間范圍產生磁場(chang)，所(suo)以能載(zai)流(liu)的(de)(de)(de)電(dian)(dian)(dian)(dian)導體(ti)都有(you)一般意義(yi)上的(de)(de)(de)感(gan)性(xing)。然而導體(ti)的(de)(de)(de)電(dian)(dian)(dian)(dian)感(gan)較(jiao)小，三(san)相電(dian)(dian)(dian)(dian)抗器(qi)，所(suo)產生的(de)(de)(de)磁場(chang)不強，因此實際的(de)(de)(de)電(dian)(dian)(dian)(dian)抗器(qi)是(shi)(shi)導線繞成螺線管(guan)形式。并(bing)且，為了讓這只螺線管(guan)具有(you)更大的(de)(de)(de)電(dian)(dian)(dian)(dian)感(gan)，還會在(zai)螺線管(guan)中(zhong)插入鐵(tie)心(xin)。電(dian)(dian)(dian)(dian)抗器(qi)在(zai)額(e)定負載(zai)下長(chang)期正常運行的(de)(de)(de)時間，就(jiu)是(shi)(shi)電(dian)(dian)(dian)(dian)抗器(qi)的(de)(de)(de)使(shi)用(yong)壽(shou)(shou)命(ming)。電(dian)(dian)(dian)(dian)抗器(qi)使(shi)用(yong)壽(shou)(shou)命(ming)由(you)制造(zao)它(ta)的(de)(de)(de)材(cai)料(liao)(liao)所(suo)決(jue)定。制造(zao)電(dian)(dian)(dian)(dian)抗器(qi)的(de)(de)(de)材(cai)料(liao)(liao)有(you)金屬(shu)材(cai)料(liao)(liao)和(he)絕(jue)緣材(cai)料(liao)(liao)兩(liang)大類。金屬(shu)材(cai)料(liao)(liao)耐高溫，而絕(jue)緣材(cai)料(liao)(liao)長(chang)期在(zai)較(jiao)高的(de)(de)(de)溫度、電(dian)(dian)(dian)(dian)場(chang)和(he)磁場(chang)作用(yong)下，會逐(zhu)漸失(shi)去(qu)原有(you)的(de)(de)(de)力學性(xing)能和(he)絕(jue)緣性(xing)能，例(li)如變脆、機械強度減弱(ruo)、穿。這個(ge)漸變的(de)(de)(de)過(guo)程就(jiu)是(shi)(shi)絕(jue)緣材(cai)料(liao)(liao)的(de)(de)(de)老化。

電(dian)(dian)(dian)抗器(qi)(qi)(qi)(qi)也叫電(dian)(dian)(dian)感(gan)器(qi)(qi)(qi)(qi)，在(zai)電(dian)(dian)(dian)路中的(de)(de)應(ying)用(yong)(yong)十分廣泛，在(zai)電(dian)(dian)(dian)路中因為存在(zai)電(dian)(dian)(dian)磁感(gan)應(ying)的(de)(de)效果，所(suo)以存在(zai)一定的(de)(de)電(dian)(dian)(dian)感(gan)性(xing)，能夠(gou)起到阻止電(dian)(dian)(dian)流變化(hua)的(de)(de)作用(yong)(yong)。用(yong)(yong)于電(dian)(dian)(dian)網(wang)進(jin)線(xian)中，通過的(de)(de)是(shi)交流電(dian)(dian)(dian)流，進(jin)線(xian)電(dian)(dian)(dian)抗器(qi)(qi)(qi)(qi)的(de)(de)作用(yong)(yong)是(shi)限(xian)制變流器(qi)(qi)(qi)(qi)換相時(shi)電(dian)(dian)(dian)網(wang)側的(de)(de)壓降(jiang)和晶閘管(guan)的(de)(de)電(dian)(dian)(dian)流上升(sheng)率di/dt和電(dian)(dian)(dian)壓上升(sheng)率du/dt，以及(ji)并(bing)聯變流器(qi)(qi)(qi)(qi)組的(de)(de)解耦。有時(shi)為了(le)讓這只螺線(xian)管(guan)具有更(geng)大的(de)(de)電(dian)(dian)(dian)感(gan)，便在(zai)螺線(xian)管(guan)中插入鐵(tie)心，稱鐵(tie)心電(dian)(dian)(dian)抗器(qi)(qi)(qi)(qi)。電(dian)(dian)(dian)抗分為感(gan)抗和容抗，比較科學(xue)的(de)(de)歸類(lei)是(shi)感(gan)抗器(qi)(qi)(qi)(qi)（電(dian)(dian)(dian)感(gan)器(qi)(qi)(qi)(qi)）和容抗器(qi)(qi)(qi)(qi)（電(dian)(dian)(dian)容器(qi)(qi)(qi)(qi)）統稱為電(dian)(dian)(dian)抗器(qi)(qi)(qi)(qi)。

電(dian)(dian)(dian)(dian)(dian)抗器(qi)也叫(jiao)電(dian)(dian)(dian)(dian)(dian)感(gan)器(qi)，在(zai)(zai)(zai)(zai)電(dian)(dian)(dian)(dian)(dian)路中(zhong)的(de)(de)(de)應用十分(fen)廣泛，在(zai)(zai)(zai)(zai)電(dian)(dian)(dian)(dian)(dian)路中(zhong)因(yin)為存(cun)在(zai)(zai)(zai)(zai)電(dian)(dian)(dian)(dian)(dian)磁感(gan)應的(de)(de)(de)效(xiao)果(guo)，所以存(cun)在(zai)(zai)(zai)(zai)一(yi)(yi)(yi)(yi)定的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)感(gan)性，能(neng)夠起到阻止電(dian)(dian)(dian)(dian)(dian)流變化的(de)(de)(de)作(zuo)用。進(jin)線電(dian)(dian)(dian)(dian)(dian)抗器(qi)的(de)(de)(de)線圈和(he)鐵(tie)芯(xin)組裝成(cheng)一(yi)(yi)(yi)(yi)體后經過(guo)預烘→真空浸漆→熱(re)烘固化這(zhe)一(yi)(yi)(yi)(yi)工(gong)藝流程，采用H級浸漬漆，使電(dian)(dian)(dian)(dian)(dian)抗器(qi)的(de)(de)(de)線圈和(he)鐵(tie)芯(xin)牢固地結合在(zai)(zai)(zai)(zai)一(yi)(yi)(yi)(yi)起，不(bu)但大大減小了運(yun)行(xing)時的(de)(de)(de)噪音，而(er)且(qie)具有極高的(de)(de)(de)耐(nai)熱(re)等(deng)級，可確(que)保電(dian)(dian)(dian)(dian)(dian)抗器(qi)在(zai)(zai)(zai)(zai)高溫下亦能(neng)安(an)全(quan)地無噪音地運(yun)行(xing)。據(ju)電(dian)(dian)(dian)(dian)(dian)抗器(qi)生產廠家介紹，電(dian)(dian)(dian)(dian)(dian)抗器(qi)的(de)(de)(de)外殼會跟著溫度的(de)(de)(de)變化呈(cheng)(cheng)現(xian)脹(zhang)大或者是(shi)縮短的(de)(de)(de)現(xian)象，可是(shi)這(zhe)里邊(bian)還(huan)會呈(cheng)(cheng)現(xian)一(yi)(yi)(yi)(yi)些故(gu)障(zhang)，電(dian)(dian)(dian)(dian)(dian)抗器(qi)在(zai)(zai)(zai)(zai)進(jin)行(xing)作(zuo)業(ye)的(de)(de)(de)時分(fen)內部呈(cheng)(cheng)現(xian)發電(dian)(dian)(dian)(dian)(dian)的(de)(de)(de)現(xian)象，然后就(jiu)會形(xing)成(cheng)箱壁上面呈(cheng)(cheng)現(xian)顯著的(de)(de)(de)變形(xing)，呈(cheng)(cheng)現(xian)這(zhe)樣原因(yin)的(de)(de)(de)主要因(yin)素是(shi)運(yun)轉的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)壓過(guo)高還(huan)有電(dian)(dian)(dian)(dian)(dian)抗器(qi)自身的(de)(de)(de)質量就(jiu)不(bu)過(guo)關(guan)形(xing)成(cheng)的(de)(de)(de)。