电工入门一定要知道的知识点

都是凤舞天骄

1、直流电路
电路: 就是电流通过的途径
组成: 电路由电源、负载、导线、开关组成
内电路: 负载、导线、开关
外电路: 电源内部的一段电路
负载: 所有电器
电源: 能将其它形式的能量转换成电能的设备
2.串联电路：
电阻的串联：将电阻首尾依次相连,但电流只有一条通路的连接方法。
电路串联的特点为电流与总电流相等，即I = I1 = I2 = I3…
总电压等于各电阻上电压之和，即U = U1 + U2 + U3…
总电阻等于负载电阻之和，即R = R1 + R2 + R3…










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whj18298985695

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xywwh

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电气~自动化

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这波反向操作，我属实没想到！