The invention relates to synchronizing an inverter with an alternating voltage source.

本发明涉及使逆变器与交流电压源同步。

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A new coloring method, alternating voltage passivation, was originated to obtain color films on stainless steel in Cr-free sulfuric acid solution.

提出了一种新的不锈钢着色方法——载波钝化着色，即在无铬的硫酸溶液中用载波钝化的电化学方法得到各种色彩的不锈钢表面。

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The article deals with the functions of DC AC series intelligent power inverters, software PWM technology and alternating voltage output modulation technology.

介绍了DC AC系列智能电源逆变器的功能，软件PWM技术及其交流电压输出调制技术。

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Their job is to convert high-voltage alternating current from the mains into low-voltage direct current for mobile phones, laptops, iPods and other electronic gadgets.

ECONOMIST: How a boring gadget saved $2 billion-worth of electricity

Large-scale electricity transmission usually uses alternating current, in which both current and voltage oscillate.

ECONOMIST: Superconductors are starting to become useful

High-voltage DC can carry power over long distances at lower cost than alternating current, but the transformers still cost too much to make the idea widespread.

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