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贴片电感中的磁场产生说明
Edit:管理员 Browse: Times Date:2016-05-12
贴片电感中的磁场产生说明
贴片电感
是电子电路或装置上的属性之一,指的是:当电流改变时,因电磁感应而产生抵抗电流改变的电动势。
贴片电感
的特性与
贴片电容
的特性正好相反,它具有阻止交流电通过而让直流电顺利通过的特性。电感的特性是通直流,阻交流,频率越高,线圈阻抗越大。贴片电感器的电流中经常和电容一起工作,构成LC滤波器,LC振荡器等。另外,人们还利用电感的特性,制造了阻流圈、变压器、继电器等。
电路中的任何电流,会产生磁场,磁棒的磁通量又作用于电路上。依据楞次定律,此磁通会借由感应出的电压(反电动势)而倾向于抵抗电流的改变。磁通改变量对电流改变量的比值称为自感,自感通常也就直接称做是这个电路的电感。具有电感性的装置称为
贴片电感
器,贴片电感器通常是一线圈,可以聚集磁场。
东莞市祥如电子有限公司
官方网站:
www.xiangrudz.com
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