Some analysis is made toward the common interference of frequency converter circuit and some countermeasures to interference are suggested.
对变频器电路常见的干扰作了分析，并提出了抗干扰措施。
The model considers the dynamics of converter switch circuit and can be applied in the analysis for high frequency dynamic characteristics.
该模型考虑了换流器开关电路的动态特性，适用于高频动态特性分析。
Maintenance department: maintenance industries circuit boards, machine equipment system, main board, controller, power supply, frequency converter, PLC and touch screen.
维修部：维修各行业电路板，机加工设备系统，主板，控制器，电源，变频器，PLC触摸屏等。
This paper presents two kinds of braking circuits with PWM frequency converter, this circuit possess good effect in practical application.
本文介绍了用于PWM变频器的两种制动电路。此电路在实际应用中效果很好。
The active clamp ZVS-PWM power converter circuit has many advantages over the conventional PWM converters. The design and performances of high frequency power supplies are improved.
有源箝位ZVS-PWM开关变换器较硬开关PWM变换器有很大的优点，可以改进高频电源的设计，改善它的性能。
A charge balanced voltage to frequency converter is jpresented in this paper, and the circuit design and the process technology are also described.
介绍了电荷平衡式电压频率转换器的电路设计与工艺制作，并给出了研究结果。
The basic operation principle of the series active power filter for harmonic suppression of frequency converter is analyzed in this paper, and its control method and control circuit are studied.
文章分析了适用于变频器谐波抑制的串联型有源电力滤波器的基本工作原理，并对其控制方法和控制电路进行了研究。
This circuit has been applied in development of high voltage frequency converter successfully.
该电路已经在高压变频器的开发中得到应用。
The work principle, circuit structure and realization method of control of the ML frequency converter system are discussed. The system USES PWM rectifier to realize reactive power compensation.
论述了运用PWM整流器实现无功功率补偿的ML变频系统的工作原理、电路结构和控制的实现方法。
This project is applied to the control circuit of the frequency converter power source of for measuring ground resistance in an electric substation.
此方案成功地应用于变电站接地电阻测量变频电源控制电路中。
In this paper, taking L-band as the core, a design Compatible Multi-band Up-converter for radio frequency is introduced, and the real circuit is accomplished and tested.
以L波段为主，论述和设计了兼容多波段上变频器，并且完成了实际电路的制作与调试。
This kind of material is already extensive now to be used for common mode choke of high frequency circuit changer, high frequency dc-to-ac converter, zero order mutual-inductor and etc.
这种材料现已广泛用于共模扼流圈、高频开关电源、高频逆变器、零序互感器等许多电器元件。
After each maintenance frequency converter, carefully examined for missing screws and wire etc., to prevent small metal objects cause short-circuit accident frequency converter.
每次维护变频器后，要认真检查有无遗漏的螺丝及导线等，防止小金属物品造成变频器短路事故。
This paper discussed the problems of frequency converter installation, including environmental requirements, protection requirements and external circuit connection.
本文全面论述了变频器安装方面的有关问题，其中包括安装的环境要求、防护要求及外部接线的有关问题。
A shell body is arranged outside the frequency converter control circuit and is provided with a wiring terminal, a control switch, an indication light and a displaying screen.
所述的变频器控制电路外部设置有壳体，在壳体上设置有接线端子、控制开关、指示灯和显示屏。
After the analyses of circuit theory of analogue voltage-to-frequency ratio converter, the design requirement of component parameters and the calculation method are presented.
分析了模拟电压一频率比变换电路原理，给出了元件参数的设计要求及其计算方法。
After the analyses of circuit theory of analogue voltage-to-frequency ratio converter, the design requirement of component parameters and the calculation method are presented.
分析了模拟电压一频率比变换电路原理，给出了元件参数的设计要求及其计算方法。
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