框架式湖北電磁鐵又稱箱式電(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)鐵，因為它的(de)形(xing)狀(zhuang)是方形(xing)的(de)。這(zhe)種(zhong)框架電(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)鐵是一種(zhong)產生電(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)的(de)設備。當變壓(ya)器鐵心(xin)(xin)在外旋轉，其輸(shu)出功(gong)率與導電(dian)(dian)(dian)(dian)(dian)繞組(zu)電(dian)(dian)(dian)(dian)(dian)阻一致時，帶電(dian)(dian)(dian)(dian)(dian)流的(de)線圈具有(you)(you)(you)與磁(ci)(ci)(ci)鐵相同的(de)磁(ci)(ci)(ci)性(xing)。我們(men)(men)通常(chang)把它做成條狀(zhuang)或蹄狀(zhuang)，使它的(de)變壓(ya)器鐵心(xin)(xin)更容(rong)易磁(ci)(ci)(ci)化。另外，為了使電(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)鐵立即(ji)斷電(dian)(dian)(dian)(dian)(dian)消磁(ci)(ci)(ci)，我們(men)(men)經常(chang)采用快速消磁(ci)(ci)(ci)的(de)軟(ruan)鐵或硅鋼材料(liao)制(zhi)作。這(zhe)種(zhong)電(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)鐵插上(shang)電(dian)(dian)(dian)(dian)(dian)源就(jiu)會有(you)(you)(you)磁(ci)(ci)(ci)性(xing)。當電(dian)(dian)(dian)(dian)(dian)源關閉(bi)時，磁(ci)(ci)(ci)場將消失。方形(xing)電(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)鐵在我們(men)(men)的(de)日常(chang)生活中有(you)(you)(you)很(hen)多用途，因為它的(de)產生也使發電(dian)(dian)(dian)(dian)(dian)機組(zu)的(de)輸(shu)出功(gong)率有(you)(you)(you)了很(hen)大的(de)提高。

電磁鐵交流原理

我們(men)先來看看電(dian)(dian)磁(ci)鐵(tie)的組成(cheng)(cheng)原理(li)：電(dian)(dian)磁(ci)鐵(tie)主要(yao)由線圈(quan)、鐵(tie)芯和(he)(he)電(dian)(dian)樞組成(cheng)(cheng)。鐵(tie)芯和(he)(he)電(dian)(dian)樞一般由軟磁(ci)材料(liao)制成(cheng)(cheng)。一般分為直流電(dian)(dian)磁(ci)鐵(tie)和(he)(he)通信電(dian)(dian)磁(ci)鐵(tie)。通信電(dian)(dian)磁(ci)鐵(tie)的原理(li)是什么(me)？

通訊電(dian)磁鐵(tie)(tie)線圈插(cha)入時(shi)，鐵(tie)(tie)芯(xin)和電(dian)樞被磁化，變成兩個極性相反(fan)的(de)(de)磁鐵(tie)(tie)。當(dang)吸附力(li)(li)超過張(zhang)力(li)(li)彈(dan)簧的(de)(de)反(fan)作用(yong)力(li)(li)時(shi)，電(dian)樞轉(zhuan)向(xiang)點向(xiang)鐵(tie)(tie)心方向(xiang)移動。當(dang)線圈中(zhong)的(de)(de)電(dian)流低(di)于(yu)一(yi)定值或電(dian)源(yuan)中(zhong)斷(duan)時(shi)，電(dian)磁吸收力(li)(li)低(di)于(yu)張(zhang)力(li)(li)彈(dan)簧的(de)(de)反(fan)作用(yong)力(li)(li)，電(dian)樞在反(fan)作用(yong)力(li)(li)的(de)(de)作用(yong)下會回到原來的(de)(de)釋放方向(xiang)。

值得(de)注意的(de)(de)(de)是(shi)，通(tong)信電磁(ci)(ci)鐵的(de)(de)(de)電磁(ci)(ci)吸收力是(shi)由磁(ci)(ci)選機的(de)(de)(de)磁(ci)(ci)場(chang)和磁(ci)(ci)選機的(de)(de)(de)磁(ci)(ci)場(chang)組(zu)成的(de)(de)(de)兩個交(jiao)變(bian)電場(chang)的(de)(de)(de)磁(ci)(ci)場(chang)力加上直流(liu)凈重作用的(de)(de)(de)，更容(rong)易釋(shi)放，所以(yi)輸(shu)出功率低，變(bian)壓器鐵心(xin)體(ti)積(ji)大(da)，線(xian)圈(quan)能耗高；功率因數低，線(xian)圈(quan)電流(liu)大(da)，發熱嚴重，不(bu)僅(jin)浪費了電能，而(er)且造成線(xian)圈(quan)老化(hua)破(po)壞過早。很糟糕。因此，大(da)多數時候我們(men)會選擇直流(liu)電而(er)不(bu)是(shi)通(tong)訊電磁(ci)(ci)鐵。