框架式東莞電磁鐵又稱箱(xiang)式電(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)鐵(tie)，因為(wei)它(ta)的(de)(de)形(xing)狀是方(fang)形(xing)的(de)(de)。這種框(kuang)架電(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)鐵(tie)是一種產(chan)生(sheng)電(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)的(de)(de)設備。當(dang)變(bian)壓(ya)器鐵(tie)心(xin)在(zai)外旋轉，其輸(shu)出功(gong)率(lv)與導(dao)電(dian)(dian)(dian)(dian)(dian)(dian)繞組(zu)電(dian)(dian)(dian)(dian)(dian)(dian)阻一致(zhi)時，帶電(dian)(dian)(dian)(dian)(dian)(dian)流的(de)(de)線圈(quan)具有(you)(you)與磁(ci)(ci)(ci)鐵(tie)相同的(de)(de)磁(ci)(ci)(ci)性(xing)。我(wo)們通常(chang)把它(ta)做成條(tiao)狀或(huo)蹄狀，使它(ta)的(de)(de)變(bian)壓(ya)器鐵(tie)心(xin)更容易磁(ci)(ci)(ci)化(hua)。另外，為(wei)了(le)使電(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)鐵(tie)立即斷電(dian)(dian)(dian)(dian)(dian)(dian)消磁(ci)(ci)(ci)，我(wo)們經常(chang)采用(yong)快速消磁(ci)(ci)(ci)的(de)(de)軟鐵(tie)或(huo)硅(gui)鋼材料制(zhi)作。這種電(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)鐵(tie)插上電(dian)(dian)(dian)(dian)(dian)(dian)源就會有(you)(you)磁(ci)(ci)(ci)性(xing)。當(dang)電(dian)(dian)(dian)(dian)(dian)(dian)源關閉時，磁(ci)(ci)(ci)場將消失(shi)。方(fang)形(xing)電(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)鐵(tie)在(zai)我(wo)們的(de)(de)日常(chang)生(sheng)活中有(you)(you)很(hen)多(duo)用(yong)途，因為(wei)它(ta)的(de)(de)產(chan)生(sheng)也使發電(dian)(dian)(dian)(dian)(dian)(dian)機組(zu)的(de)(de)輸(shu)出功(gong)率(lv)有(you)(you)了(le)很(hen)大的(de)(de)提高。

電磁鐵交流原理

我(wo)們先來看看電磁鐵(tie)(tie)(tie)的組成原理：電磁鐵(tie)(tie)(tie)主要(yao)由(you)線圈、鐵(tie)(tie)(tie)芯(xin)和電樞(shu)組成。鐵(tie)(tie)(tie)芯(xin)和電樞(shu)一(yi)般由(you)軟磁材料(liao)制成。一(yi)般分為直(zhi)流電磁鐵(tie)(tie)(tie)和通信電磁鐵(tie)(tie)(tie)。通信電磁鐵(tie)(tie)(tie)的原理是什么(me)？

通訊電(dian)磁鐵線圈插入(ru)時(shi)，鐵芯和電(dian)樞(shu)被(bei)磁化(hua)，變成兩(liang)個極性相反(fan)的(de)磁鐵。當(dang)吸(xi)附力超過(guo)張(zhang)(zhang)力彈簧(huang)(huang)的(de)反(fan)作用力時(shi)，電(dian)樞(shu)轉向點向鐵心方向移動。當(dang)線圈中(zhong)的(de)電(dian)流(liu)低(di)于一定值(zhi)或電(dian)源中(zhong)斷時(shi)，電(dian)磁吸(xi)收力低(di)于張(zhang)(zhang)力彈簧(huang)(huang)的(de)反(fan)作用力，電(dian)樞(shu)在反(fan)作用力的(de)作用下(xia)會回到原(yuan)來的(de)釋放(fang)方向。

值得注意的(de)是(shi)，通信(xin)電(dian)(dian)磁(ci)(ci)鐵的(de)電(dian)(dian)磁(ci)(ci)吸收力是(shi)由磁(ci)(ci)選機(ji)的(de)磁(ci)(ci)場和磁(ci)(ci)選機(ji)的(de)磁(ci)(ci)場組(zu)成的(de)兩個交變電(dian)(dian)場的(de)磁(ci)(ci)場力加上直(zhi)流凈(jing)重作用的(de)，更容易(yi)釋放，所以(yi)輸出功率(lv)低(di)，變壓器鐵心體(ti)積大(da)，線圈(quan)能耗高(gao)；功率(lv)因數低(di)，線圈(quan)電(dian)(dian)流大(da)，發熱嚴重，不(bu)僅浪費(fei)了(le)電(dian)(dian)能，而(er)且造成線圈(quan)老(lao)化破壞(huai)過早。很糟糕。因此，大(da)多數時候我(wo)們(men)會選擇直(zhi)流電(dian)(dian)而(er)不(bu)是(shi)通訊電(dian)(dian)磁(ci)(ci)鐵。