To make the servo system have the expected its, it s especially important for selection of DC bus voltage in servo driver.
在伺服系统中要使系统能够满足所期望的性能，伺服系统驱动器直流母线电压的选择尤为重要。
The object of using DC fuse in tunnels and way of selection were expounded, including the selection of rated voltage and current, and the coordination of circuit breakers.
概述了在轨道交通系统中选用直流熔断器的目的及选用方法，包括额定电压、额定电流的选择，与断路器的配合工作。
In this paper, a 16 stages digital controlled DC stabilized voltage source based on LM317 is designed. Selection and realization of the adjustable resistance in this source is introduced.
以三端稳压集成电路LM317为基础，设计了一种16级数控直流稳压电源，介绍了该电源中可调电阻的选取与实现。
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