产品介绍：RX21型电阻器为被漆型绕线电阻器。
Product introduction: RX21 series resistor is lacquered wire wound resistor.
电阻器是用一种耐高温的有机硅树脂和硅粉作基本材料封装的功率型绕线电阻。
This resistor is power wire wound resistor which is made by a kind of organic silicon rosin and silicon powder as basic material encapsulation.
电阻器是具有特定电阻值的电路元件，当可能需要大量散热时，通常使用绕线电阻。
Resistors are circuit element having specified values of resistance support; and these wire-wound resistors are generally used when it may be necessary to dissipate considerable heat.
用途：陶瓷绕线电阻主要用于自动化控制系统，变频控制系统，电源设备，高档音响等电路中。
Purpose: wire wound resistor in ceramic casing is used in circuit of automatic control system, frequency conversion control system, power supply, top grade acoustics.
电阻器系列产品有：碳膜电阻、金属膜电阻、氧化膜电阻、保险丝、跳线、绕线电阻、片状电阻、水泥电阻等等；
The products of resistance include carbon film resistor, metal film resistor, oxidation resistor, fuse, leap line, patch resistor and cement resistor.
本文提出了绕线式感应电机转子回路电阻的斩波调节原理，设计了双环调速系统，并进行了计算机辅助设计和仿真研究。
This paper presents a chopper adapting principle of rotor's resistance of induction motor, develops a two loops speed governing system, and gives computer simulation results.
这种调速系统采用计算机控制，可无触点地调节转子的电阻来实现转子绕线式电动机软启动及调速。
By means of computer control, the speed control system can control the resistance of the motor without any contact, so to realize soft starting and speed control over the wound rotor motor.
绕线电机采用转子串电阻、电感的方法，既能进行起动，又能较大幅度地节能。
It can not only start, but the economize energy greatly to join resistor and inductor to rotor winding in a wound - rotor asynchronous motor.
分析了PWM的调整方式，利用绕线式电机和串电阻调速的原理，提出了一种结构简单、功率强的变阻调速绞车。
PWM mode was analyzed, and a kind of variable-resistance timing Winch being of simple structure and large power supply was put forward by using wire-wound motor and series resistance timing principle.
绕线式异步电机采用转子回路串电阻调速广泛应用于我国工矿企业的提升机电控系统。
Wound-rotor induction motors that adjust speed by connecting resistors in series to rotor circuit have been easily found in the electrically controlled systems of shaft hoist.
绕线式异步电机采用转子回路串电阻调速广泛应用于我国工矿企业的提升机电控系统。
Wound-rotor induction motors that adjust speed by connecting resistors in series to rotor circuit have been easily found in the electrically controlled systems of shaft hoist.
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