分析了模拟电极法，提出了一种测量变压器线圈冲击分布的方法即不插铁测量。
The simulated electrode method is analyst and a method for ~measuring impulse voltage distribution of transformer windings without core is built.
电磁阀的驱动是通过电磁线圈，比较容易被电压冲击损坏。
Solenoid valve driven by electromagnetic coils, voltage shocks have been relatively easy to damage.
提高了功率因素，避免了电机直接工频使用时大电流对电机线圈和电网的冲击。
Improve the power factor to avoid the motor direct-frequency high-current use of the motor coil and grid impact.
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