The improved AC/DC comparator consists of a self balancing DC comparator and an electronically compensated AC transformer.

这种新型电流比较仪实际上包含了自平衡直流比较仪和电子补偿式交流电流互感器的所有功能。

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Ac current probe act as a current transformer which the core can be opened and clamped on a current carrying conductor.

交流电流探头是利用电流变压器的原理来测试电流的﹐它的中心部分可以打开和卡紧在有电流流过的导线上。

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Its software is designed to calculate the running parameters of the AC drive system, including transformer, quadrant rectifier, DC circuit, inverter, AC motor and train load.

系统采用软件方式实时计算交流传动系统的运行参数，包括变压器、四象限整流器、直流中间回路、逆变器、电机及负载。

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Since 2005, the company has stood out in the fast-moving LED industry with an innovation that allows LEDs to be powered by alternating current, or AC, rather than requiring a transformer that turns AC into direct current.

WSJ: Seoul Semiconductor's LED-Lighted Path