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电磁继电器
2022-07-27 19:25:00 【CupidoZ】

电磁继电器的工作原理是:当线圈通电以后,铁芯被磁化产生足够大的电磁力,吸动衔铁并带动簧片,使动触点和静触点闭合或分开,即原来闭合的触点断开,原来断开的触点闭合;当线圈断电后,电磁吸力消失,衔铁返回原来的位置,动触点和静触点又恢复到原来闭合或分开的状态。应用时只要把需要控制的电路接到触点上,就可利用继电器达到控制的目的。

电磁继电器的优良继电方式一般属于多属于实体物理接触方式,所以使用当中对于继电器动作的观测条件一般都较为良好,但是由于其电磁产生到吸附合闸的过程需要损耗一定的时间,对于时间精度要求较高的工况并不适用。
电磁继电器是较为常用的继电器种类之一,常用于无需考虑电磁干扰的设备控制节点,作为设备的二次控制节点出现,可以实现半自动化的开关闭合操作。应用领域广泛。价格成本较为优秀,但由于其存在电磁特性,有些需要防磁场的工况需要慎用。
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