全國
手機版|
關注公眾號|
下載手機APP 電磁鐵原理
dangzaitongdianluoxianguanneibucharutiexinhou，tiexinbeitongdianluoxianguandecichangcihua。cihuahoudetiexinyebianchengleyigeciti，zheyangyouyulianggecichanghuxiangdiejia，congershiluoxianguandecixingdadazengqiang。weileshidiancitiedecixinggengqiang，tongchangjiangtiexinzhichengtixing。danyaozhuyitixingtiexinshangxianquanderaoxiangxiangfan，yibianshunshizhen，lingyibianbixunishizhen。ruguoraoxiangxiangtong，liangxianquanduitiexindecihuazuoyongjiangxianghudixiao，shitiexinbuxiancixing。lingwai，diancitiedetiexinyongruantiezhizuo，erbunengyonggangzhizuo。fouzegangyidanbeicihuahou，jiangchangqibaochicixingerbunengtuici，zeqicixingdeqiangruojiubunengyongdianliudedaxiaolaikongzhi，ershiqudiancitieyingyoudeyoudian。
電磁鐵是可以通電流來產生磁力的器件，屬非永久磁鐵，可以很容易地將其磁性啟動或是消除。例如：大型起重機利用電磁鐵將廢棄車輛抬起。
當dang電dian流liu通tong過guo導dao線xian時shi，會hui在zai導dao線xian的de周zhou圍wei產chan生sheng磁ci場chang。應ying用yong這zhe性xing質zhi，將jiang電dian流liu通tong過guo螺luo線xian管guan時shi，則ze會hui在zai螺luo線xian管guan之zhi內nei製zhi成cheng均jun勻yun磁ci場chang。假jia設she在zai螺luo線xian管guan的de中zhong心xin置zhi入ru鐵tie磁ci性xing物wu質zhi，則ze此ci鐵tie磁ci性xing物wu質zhi會hui被bei磁ci化hua，而er且qie會hui大da大da增zeng強qiang磁ci場chang。
一般而言，電磁鐵所產生的磁場與電流大小、線xian圈quan圈quan數shu及ji中zhong心xin的de鐵tie磁ci體ti有you關guan。在zai設she計ji電dian磁ci鐵tie時shi，會hui注zhu重zhong線xian圈quan的de分fen布bu和he鐵tie磁ci體ti的de選xuan擇ze，並bing利li用yong電dian流liu大da小xiao來lai控kong製zhi磁ci場chang。由you於yu線xian圈quan的de材cai料liao具ju有you電dian阻zu，這zhe限xian製zhi了le電dian磁ci鐵tie所suo能neng產chan生sheng的de磁ci場chang大da小xiao，但dan隨sui著zhe超chao導dao體ti的de發fa現xian與yu應ying用yong，將jiang有you機ji會hui超chao越yue現xian有you的de限xian製zhi。
