对于交流电压测量﹐利用有效值转换电路或精密整流器电路将交流信号转换成直流电压。
For AC voltage measurement, an RMS converter circuit or a precision rectifier circuit convert the AC signal into a DC voltage.
通常的方法就是使用整流器---一种把交流电转换为直流电的装置。
The usual way to do this would be to use a rectifier—a device that converts alternating to direct current.
整流器；整流管一种将交流电流转化为直流电流的装置，如二极管。
A device, such as a diode, that converts alternating current to direct current.
大多数情况下直流电是从交流电通过变压器和整流器而来的。
In most cases it is derived from the AC mains by means of a transformer and rectifier.
如果增加一个简单的降压整流器，这种窗帘就可以方便地用于交流电供电的楼、堂、馆、所及家庭居室。
One simple voltage reducing rectifier may be added for convenient use conveniently with AC power supply in hospital and household.
采用类似于交流电机磁链观测的方法来构造一个虚拟电网磁链，可以代替电网电压作为PWM整流器矢量控制中的定向矢量，达到省去交流侧电网电压传感器，降低PWM整流器成本的目的。
So a virtual line flux has been constructed to serve as the oriented vector instead of the line voltage vector to remove the AC voltage sensors and reduce the cost of PWM rectifiers.
目前电力电子应用领域中，绝大多数的交流电动机驱动逆变器前级都采用了二极管整流器或晶闸管相控整流器。
At present, in the field of power electronics applications, most of the drive systems of AC motors use diode rectifiers and phase-control thyristor rectifiers.
目前电力电子应用领域中，绝大多数的交流电动机驱动逆变器前级都采用了二极管整流器或晶闸管相控整流器。
At present, in the field of power electronics applications, most of the drive systems of AC motors use diode rectifiers and phase-control thyristor rectifiers.
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