框架式廣西電磁鐵又稱箱式(shi)電(dian)(dian)(dian)(dian)磁(ci)鐵，因為(wei)它(ta)的(de)(de)(de)形狀(zhuang)是(shi)方(fang)形的(de)(de)(de)。這種(zhong)(zhong)框(kuang)架電(dian)(dian)(dian)(dian)磁(ci)鐵是(shi)一(yi)種(zhong)(zhong)產生電(dian)(dian)(dian)(dian)磁(ci)的(de)(de)(de)設(she)備。當變壓器鐵心在(zai)外(wai)旋(xuan)轉，其輸出(chu)功率(lv)與導電(dian)(dian)(dian)(dian)繞組電(dian)(dian)(dian)(dian)阻一(yi)致時，帶電(dian)(dian)(dian)(dian)流的(de)(de)(de)線圈具(ju)有與磁(ci)鐵相同的(de)(de)(de)磁(ci)性。我(wo)們(men)通常把它(ta)做成條狀(zhuang)或蹄狀(zhuang)，使(shi)(shi)它(ta)的(de)(de)(de)變壓器鐵心更容易磁(ci)化。另外(wai)，為(wei)了(le)使(shi)(shi)電(dian)(dian)(dian)(dian)磁(ci)鐵立即斷電(dian)(dian)(dian)(dian)消(xiao)磁(ci)，我(wo)們(men)經(jing)常采用(yong)快速消(xiao)磁(ci)的(de)(de)(de)軟鐵或硅鋼材(cai)料制作(zuo)。這種(zhong)(zhong)電(dian)(dian)(dian)(dian)磁(ci)鐵插(cha)上(shang)電(dian)(dian)(dian)(dian)源就(jiu)會(hui)有磁(ci)性。當電(dian)(dian)(dian)(dian)源關閉時，磁(ci)場將消(xiao)失。方(fang)形電(dian)(dian)(dian)(dian)磁(ci)鐵在(zai)我(wo)們(men)的(de)(de)(de)日常生活中有很(hen)多用(yong)途，因為(wei)它(ta)的(de)(de)(de)產生也使(shi)(shi)發電(dian)(dian)(dian)(dian)機組的(de)(de)(de)輸出(chu)功率(lv)有了(le)很(hen)大的(de)(de)(de)提(ti)高。

電磁鐵交流原理

我(wo)們先來看看電(dian)(dian)磁(ci)鐵(tie)的組成原(yuan)(yuan)理：電(dian)(dian)磁(ci)鐵(tie)主要由線圈、鐵(tie)芯(xin)和電(dian)(dian)樞(shu)組成。鐵(tie)芯(xin)和電(dian)(dian)樞(shu)一般由軟磁(ci)材料制成。一般分為(wei)直流(liu)電(dian)(dian)磁(ci)鐵(tie)和通信電(dian)(dian)磁(ci)鐵(tie)。通信電(dian)(dian)磁(ci)鐵(tie)的原(yuan)(yuan)理是什么？

通(tong)訊(xun)電(dian)(dian)磁鐵(tie)(tie)線圈插入(ru)時(shi)，鐵(tie)(tie)芯和電(dian)(dian)樞(shu)被磁化，變成兩個極性相反(fan)的(de)(de)磁鐵(tie)(tie)。當(dang)(dang)吸附力超過張力彈簧的(de)(de)反(fan)作(zuo)用(yong)(yong)力時(shi)，電(dian)(dian)樞(shu)轉向(xiang)(xiang)點向(xiang)(xiang)鐵(tie)(tie)心方向(xiang)(xiang)移動(dong)。當(dang)(dang)線圈中的(de)(de)電(dian)(dian)流低(di)于一定值(zhi)或電(dian)(dian)源(yuan)中斷時(shi)，電(dian)(dian)磁吸收力低(di)于張力彈簧的(de)(de)反(fan)作(zuo)用(yong)(yong)力，電(dian)(dian)樞(shu)在反(fan)作(zuo)用(yong)(yong)力的(de)(de)作(zuo)用(yong)(yong)下(xia)會回到原來(lai)的(de)(de)釋(shi)放方向(xiang)(xiang)。

值(zhi)得注意的是(shi)，通信電磁(ci)(ci)(ci)鐵的電磁(ci)(ci)(ci)吸收力(li)是(shi)由磁(ci)(ci)(ci)選(xuan)機的磁(ci)(ci)(ci)場和磁(ci)(ci)(ci)選(xuan)機的磁(ci)(ci)(ci)場組成(cheng)的兩個交變(bian)電場的磁(ci)(ci)(ci)場力(li)加上直(zhi)流(liu)凈重(zhong)作用的，更容易釋放，所以輸出(chu)功率(lv)低(di)，變(bian)壓器鐵心(xin)體積大(da)，線圈(quan)(quan)能耗(hao)高；功率(lv)因數(shu)低(di)，線圈(quan)(quan)電流(liu)大(da)，發熱嚴重(zhong)，不(bu)僅浪(lang)費了(le)電能，而且造成(cheng)線圈(quan)(quan)老(lao)化破壞過早(zao)。很糟糕。因此，大(da)多(duo)數(shu)時(shi)候我們會選(xuan)擇直(zhi)流(liu)電而不(bu)是(shi)通訊電磁(ci)(ci)(ci)鐵。