框架式內蒙古自治區電磁鐵又稱(cheng)箱式(shi)電(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)鐵(tie)(tie)(tie)(tie)，因(yin)為它(ta)的形(xing)狀是方(fang)形(xing)的。這(zhe)種(zhong)框架電(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)鐵(tie)(tie)(tie)(tie)是一(yi)種(zhong)產生電(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)的設備。當變壓(ya)器鐵(tie)(tie)(tie)(tie)心在外(wai)旋轉(zhuan)，其輸(shu)(shu)出功(gong)率與導電(dian)(dian)(dian)(dian)繞組(zu)電(dian)(dian)(dian)(dian)阻一(yi)致時，帶電(dian)(dian)(dian)(dian)流的線(xian)圈具有與磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)鐵(tie)(tie)(tie)(tie)相同的磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)性(xing)。我們(men)通常(chang)(chang)把它(ta)做成條狀或蹄狀，使它(ta)的變壓(ya)器鐵(tie)(tie)(tie)(tie)心更容易磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)化。另外(wai)，為了使電(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)鐵(tie)(tie)(tie)(tie)立即斷電(dian)(dian)(dian)(dian)消磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)，我們(men)經常(chang)(chang)采用快速消磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)的軟(ruan)鐵(tie)(tie)(tie)(tie)或硅(gui)鋼材料制作(zuo)。這(zhe)種(zhong)電(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)鐵(tie)(tie)(tie)(tie)插上電(dian)(dian)(dian)(dian)源(yuan)就(jiu)會(hui)有磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)性(xing)。當電(dian)(dian)(dian)(dian)源(yuan)關閉時，磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)場將消失。方(fang)形(xing)電(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)鐵(tie)(tie)(tie)(tie)在我們(men)的日常(chang)(chang)生活中(zhong)有很多用途，因(yin)為它(ta)的產生也使發電(dian)(dian)(dian)(dian)機組(zu)的輸(shu)(shu)出功(gong)率有了很大的提(ti)高。

電磁鐵交流原理

我們先來看(kan)看(kan)電(dian)(dian)磁(ci)(ci)(ci)(ci)鐵(tie)的組成(cheng)原理(li)：電(dian)(dian)磁(ci)(ci)(ci)(ci)鐵(tie)主(zhu)要由線圈、鐵(tie)芯和電(dian)(dian)樞(shu)組成(cheng)。鐵(tie)芯和電(dian)(dian)樞(shu)一般由軟磁(ci)(ci)(ci)(ci)材料制(zhi)成(cheng)。一般分為直流電(dian)(dian)磁(ci)(ci)(ci)(ci)鐵(tie)和通信電(dian)(dian)磁(ci)(ci)(ci)(ci)鐵(tie)。通信電(dian)(dian)磁(ci)(ci)(ci)(ci)鐵(tie)的原理(li)是(shi)什么？

通訊電磁鐵(tie)(tie)(tie)線圈插入時，鐵(tie)(tie)(tie)芯和(he)電樞(shu)被磁化，變(bian)成兩個極性(xing)相(xiang)反(fan)的(de)磁鐵(tie)(tie)(tie)。當吸(xi)附力(li)(li)(li)超過張力(li)(li)(li)彈簧的(de)反(fan)作用力(li)(li)(li)時，電樞(shu)轉(zhuan)向(xiang)點向(xiang)鐵(tie)(tie)(tie)心方向(xiang)移動。當線圈中的(de)電流低于(yu)一定(ding)值或電源中斷時，電磁吸(xi)收力(li)(li)(li)低于(yu)張力(li)(li)(li)彈簧的(de)反(fan)作用力(li)(li)(li)，電樞(shu)在(zai)反(fan)作用力(li)(li)(li)的(de)作用下會(hui)回到原來的(de)釋(shi)放方向(xiang)。

值得注意(yi)的(de)(de)(de)是(shi)，通信電磁(ci)鐵的(de)(de)(de)電磁(ci)吸收力(li)是(shi)由磁(ci)選(xuan)(xuan)機(ji)的(de)(de)(de)磁(ci)場(chang)和磁(ci)選(xuan)(xuan)機(ji)的(de)(de)(de)磁(ci)場(chang)組成的(de)(de)(de)兩個交變電場(chang)的(de)(de)(de)磁(ci)場(chang)力(li)加上直流凈重作用的(de)(de)(de)，更容(rong)易釋(shi)放，所以(yi)輸出功率(lv)低，變壓器鐵心體積大，線(xian)圈能耗高；功率(lv)因(yin)(yin)數低，線(xian)圈電流大，發熱(re)嚴(yan)重，不(bu)僅浪費(fei)了電能，而(er)且(qie)造成線(xian)圈老化破(po)壞過早。很糟糕。因(yin)(yin)此，大多數時候我們會選(xuan)(xuan)擇直流電而(er)不(bu)是(shi)通訊電磁(ci)鐵。