什么(me)是空(kong)(kong)心(xin)(xin)線(xian)(xian)(xian)圈？空(kong)(kong)心(xin)(xin)線(xian)(xian)(xian)圈由兩部分組成，即空(kong)(kong)心(xin)(xin)線(xian)(xian)(xian)圈。空(kong)(kong)心(xin)(xin)顧(gu)名思(si)義是指(zhi)中(zhong)心(xin)(xin)什么(me)都不是，線(xian)(xian)(xian)圈是指(zhi)電(dian)線(xian)(xian)(xian)一(yi)根一(yi)根地纏(chan)繞起來，電(dian)線(xian)(xian)(xian)之間是絕緣(yuan)的。當電(dian)流(liu)(liu)流(liu)(liu)過導線(xian)(xian)(xian)時(shi)，線(xian)(xian)(xian)圈周(zhou)圍的磁(ci)場可以產(chan)生(sheng)磁(ci)場，磁(ci)場強度(du)和流(liu)(liu)過線(xian)(xian)(xian)圈的電(dian)流(liu)(liu)與線(xian)(xian)(xian)圈匝(za)數成正比。

　　在(zai)一定的磁場中(zhong)，用(yong)(yong)線(xian)圈(quan)切(qie)割(ge)磁力線(xian)，同樣的磁場可(ke)以(yi)(yi)轉化為(wei)電能(neng)。利用(yong)(yong)這種磁電轉換原理，可(ke)以(yi)(yi)制作繼電器(qi)(qi)，電機，馬達，無線(xian)設備，喇叭等器(qi)(qi)件(jian)。導線(xian)材料可(ke)以(yi)(yi)是銅，鐵，鋁，金等金屬(shu)器(qi)(qi)件(jian)，線(xian)圈(quan)的中(zhong)心可(ke)以(yi)(yi)插入金屬(shu)磁性(xing)器(qi)(qi)件(jian)中(zhong)以(yi)(yi)增(zeng)強其磁場，當線(xian)圈(quan)中(zhong)心只有(you)塑(su)料骨(gu)(gu)架(jia)或沒有(you)骨(gu)(gu)架(jia)時(shi)形(xing)(xing)成(cheng)空心線(xian)圈(quan)，空心線(xian)圈(quan)應用(yong)(yong)廣泛，為(wei)了(le)滿足多種需要(yao)，它(ta)被(bei)設計成(cheng)圓形(xing)(xing)，方形(xing)(xing)，橢圓形(xing)(xing)和多種異常(chang)形(xing)(xing)狀。