...功能說明: 本试题系以二极体桥式整流器及固态开关 SCR 组成之单相整數波直流功率 控制器, 采零电压交越(zero voltage crossing)之控制方式, 以完整间歇式正 弦半波波形输出控制直流输出功率, 有效降低相位控制整流器产生的电源 谐波污染。
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If a voltage change requires that a different tap be selected, the new tap is electronically switched in precisely at the zero-crossing, to avoid distorting the AC waveform.
如果电压变化需要选择不同的自来水,新的电子开关水龙头恰恰是在零交叉,以避免扭曲的交流波形。
Based on switch function model of TCSC and MATLAB, the digital simulation method in researching zero-crossing point characteristic of the capacitor voltage is put forward.
该文基于TCSC的开关函数模型并借助MATLAB仿真工具,提出了研究电容电压过零点特性的数字仿真方法。
The stability of the welding arc depends mainly on the voltage and the gas ionization when current zero-crossing as well as the electron emission ability of the electrode.
其电弧稳定与否,主要取决于电流过零瞬间的电弧空间电离度、 电极发射电子能力及再引燃电压的上升速度。
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