当线圈可以通过工作电流后，会在一个永久磁铁的作用下，通过企业吸引和排斥力转动，当它转到和磁铁进行平衡时，原来通着电的线较对应换向器上的触片就与电刷分离开，而电刷连接到一些符合学生产生重要推动力的那组线圈以及对应的触片上，这样我们不停的重复发展下去，直流系统电动机就转起来了。
如果换向器没有功能，电机只能转动不到半圈就卡住，只能作为电制动。以电机旋转产生的离心力为动力，控制启动阻力的大小，减小电机启动电流，增加启动转矩，使绕组异步电动思想实现无刷自动控制操作装置。它主要由套管、起动液、活动板、弹簧、端子柱、安全阀、排气阀等组成。
换(huan)(huan)(huan)向(xiang)器(qi)用(yong)途：1。换(huan)(huan)(huan)向(xiang)器(qi)主要有钩型(xing)、槽(cao)型(xing)、平(ping)面型(xing)等规格。 选用(yong)进口原(yuan)材料精制，产(chan)品功(gong)能达(da)到国际先进水平(ping)，广泛应用(yong)于(yu)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)动(dong)工具(ju)、家用(yong)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)、汽(qi)车、摩托车等领域；集电(dian)(dian)(dian)(dian)(dian)(dian)(dian)环、碳(tan)刷座、端子板等各(ge)种规格。 换(huan)(huan)(huan)向(xiang)器(qi)用(yong)于(yu)汽(qi)车发(fa)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)机、汽(qi)油发(fa)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)机等，换(huan)(huan)(huan)向(xiang)器(qi)是整流(liu)(liu)(liu)器(qi)，其作用(yong)是使电(dian)(dian)(dian)(dian)(dian)(dian)(dian)枢(shu)绕组电(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)方(fang)向(xiang)交变，保证电(dian)(dian)(dian)(dian)(dian)(dian)(dian)磁转(zhuan)(zhuan)矩方(fang)向(xiang)恒定。 在发(fa)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)机中(zhong)，换(huan)(huan)(huan)向(xiang)器(qi)可以(yi)将元件(jian)中(zhong)的交流(liu)(liu)(liu)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)势转(zhuan)(zhuan)换(huan)(huan)(huan)成电(dian)(dian)(dian)(dian)(dian)(dian)(dian)刷之(zhi)间(jian)的直流(liu)(liu)(liu)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)势，在电(dian)(dian)(dian)(dian)(dian)(dian)(dian)气思想中(zhong)，它可以(yi)使外部直流(liu)(liu)(liu)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)流(liu)(liu)(liu)入元件(jian)中(zhong)的交流(liu)(liu)(liu)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)，产(chan)生恒定的转(zhuan)(zhuan)矩。