Based on electrical dissection of ac branches, an optimal capacitor switching method of distribution network is proposed.

基于交流支路电气剖分思想，提出了一种配电网电容器的优化投切方法。

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The method measuring electrical parameters is based on ac sample technology, the FFT way is used in software design, so the design of circuit, the function and the accuracy is fully improved.

三相电测量采用交流采样技术，软件算法采用快速傅里叶变换fft，全面克服了以前的三相电参数测量方法普遍存在的实现电路复杂以及在功能和精度上的不足。

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Rather than look for physical ridges, the scientists' method sweeps through AC frequencies to find the exact electrical impedances of fingertips in contact with the screen.

ENGADGET: Disney Research develops capacitive touch that detects multiple users through their fingertips (video)