The energy of electric field stored in the capacitor placed in an alternating electromagnatic field is concluded by using the principle of superposition and by starting with Maxwell equations.
本文运用叠加原理，从麦克斯韦方程的积分形式出发推导出在交变电磁场中储藏在电容器中的电场能量，并且指出了决定电容器电容数值的因素。
The starting circuit will be removed by a contactor and the capacitor will be converted to a reactive compensation capacitor after starting.
启动完成后利用接触器将启动电路切除，将电容器切换为无功补偿电容的低压开关柜的设计原理。
This paper presents a method of converting running and starting capacitor by a triac circuit.
提出一种运用双向晶闸管电路改变单相电容电机启动与运行电容的方法。
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