一體式封裝設計是：

防水（使用O形圈時）

無外部金屬外殼

電(dian)(dian)磁線(xian)圈是諸(zhu)如(ru)線(xian)圈，螺旋(xuan)或螺旋(xuan)形(xing)狀(zhuang)的(de)導線(xian)的(de)電(dian)(dian)導體(ti)(ti)。電(dian)(dian)磁線(xian)圈用(yong)(yong)于電(dian)(dian)氣(qi)工程(cheng)中(zhong)(zhong)，在(zai)電(dian)(dian)流與磁場(chang)相互作用(yong)(yong)的(de)應用(yong)(yong)中(zhong)(zhong)，在(zai)諸(zhu)如(ru)電(dian)(dian)感器，電(dian)(dian)磁體(ti)(ti)，變壓器和(he)傳感器線(xian)圈的(de)裝置中(zhong)(zhong)。電(dian)(dian)流通(tong)(tong)過線(xian)圈的(de)導線(xian)以產生(sheng)磁場(chang)，或者相反地，通(tong)(tong)過線(xian)圈內部的(de)外部時變磁場(chang)在(zai)導體(ti)(ti)中(zhong)(zhong)產生(sheng)EMF（電(dian)(dian)壓）。

由于安(an)培(pei)定律，通(tong)(tong)過任何(he)導體(ti)(ti)的(de)(de)(de)(de)電(dian)(dian)流在導體(ti)(ti)周圍(wei)產生(sheng)(sheng)圓形(xing)磁場。使用(yong)線(xian)(xian)圈(quan)形(xing)狀(zhuang)的(de)(de)(de)(de)優點是(shi)它(ta)增(zeng)(zeng)加了由給定電(dian)(dian)流產生(sheng)(sheng)的(de)(de)(de)(de)磁場的(de)(de)(de)(de)強(qiang)度(du)。由線(xian)(xian)的(de)(de)(de)(de)單獨匝產生(sheng)(sheng)的(de)(de)(de)(de)磁場全部(bu)穿過線(xian)(xian)圈(quan)的(de)(de)(de)(de)中(zhong)(zhong)心(xin)并(bing)且添加（疊加）以(yi)在那里(li)產生(sheng)(sheng)強(qiang)電(dian)(dian)場。線(xian)(xian)的(de)(de)(de)(de)匝數越多，場產生(sheng)(sheng)的(de)(de)(de)(de)越強(qiang)。相反(fan)，由于法拉(la)第(di)感(gan)應(ying)定律，變(bian)化的(de)(de)(de)(de)外(wai)部(bu)磁通(tong)(tong)量在諸如(ru)導線(xian)(xian)的(de)(de)(de)(de)導體(ti)(ti)中(zhong)(zhong)感(gan)應(ying)出電(dian)(dian)壓(ya)。通(tong)(tong)過將線(xian)(xian)纏(chan)繞(rao)到(dao)線(xian)(xian)圈(quan)中(zhong)(zhong)可以(yi)增(zeng)(zeng)加感(gan)應(ying)電(dian)(dian)壓(ya)，因為場線(xian)(xian)與(yu)電(dian)(dian)路(lu)相交多次。