High power factor at ac input can be achieved by controlling the switch of capacitor charge circuit.
通过对电容器充电回路开关管进行控制，实现交流输入端的高功率因数。
The basic purpose of a shunt capacitor bank is to increase the local circuit voltage and or reprove the load power factor carried by the circuit.
并联电容器组的基本目的是要提高当地线路的电压，或提高引线路所带负荷的功率因数。
Among the three-phase power-factor correction circuits, the full decoupling circuit is especially suitable for high power fields because of its high input power and good electrical performance.
在三相功率因数校正电路中，全解耦型电路由于其输入功率大，电气性能较好等优势特别适用于大功率场合。
Based on equivalent circuit of asynchronous motor in stable state, the relationship between power factor and slip Angle frequency was deduced.
从异步电机的稳态等效电路出发，推导出了功率因数与转差角频率之间的关系。
It analyzes the circuit principle of the system, amplitude control method, phase control method and realization of the power factor control.
分析了系统的电路原理、幅值控制、相角控制及功率因数控制的实现方式。
In this paper has analysed high levels of harmonic currents and low Power factor of electronic ballast by circuit study.
通过电路分析对电子镇流器存在的电源电流谐波高和功率因数低等问题。
The paper introduced the work principle, hardware circuit design and software design of a power factor automated compensator composed mainly of 8031 single chip computer.
介绍一种以8031单片机为核心而构成的功率因数自动补偿控制器的工作原理及硬件电路设计、软件设计。
It USES digital circuit to realize the calculation of the power factor.
用数字电路实现功率和功率因数的计算。
Theoretical analysis shows that the CUK circuit has inherently the features of power factor correction and soft turn off switching.
理论分析得出了CUK电路具有固有的功率因数校正和软关断开关特性。
As the heart of the power factor correction circuit, the gain modulator gets a high power factor by controlling the input current.
增益调制器作为功率因数校正电路的核心电路，通过控制输入电流来得到一个高的功率因数。
The principle of active power factor correction circuit operated in critical inductor current mode is analyzed in this paper in detail.
文中详细分析了电感电流准连续模式的有源功率因数预校正电路的工作原理。
This paper analyse and design the boost PFC, the experiment result show that DC circuit attain high high power factor.
对该功率因数校正电路进行了分析和设计，试验结果表明，该直流电源电路达到了很高的功率因数。
Introduced the principles of pulse modulating circuit for measuring power factor.
介绍了一种脉宽调制型功率因数测量电路的工作原理。
Novel circuit structure and topologies of single-stage DC switching power supplies with uninterruptible power supply and high power factor, based on flyback converter, are proposed.
该文提出了一类基于反激变换器的单级不间断高功率因数直流开关电源电路结构与拓扑族。
This paper introduces the theory of operation, measurement and control circuit design, software design of a power factor automated compensator, which is mainly designed with 8031 micro - controller.
介绍一种以邓8031单片机为核心构成的功率因数自动补偿控制器的工作原理、测控硬件电路及测控软件的设计。
A novel low conduction loss circuit that can be used for power factor correction is presented in this paper.
本文给出了一种可用于功率因数校正的新型低通态损耗电路。
A novel ZVT power factor correction circuit is proposed, in which the saturable core and the-capacitor are added to the auxiliary switching network.
提出一种新型ZVT功率因数校正电路，将饱和电感和并联电客加入辅助开关网络中。
The power factor correction (PFC) and half-bridge inverter circuit topology are commonly used in modern high power factor electronic ballasts.
现代高功率因数电子镇流器结构中普遍采用功率因数校正（PFC）和半桥逆变谐振电路拓扑。
The model setting up method of the three module which include power factor correction circuit, two-transistor forward converter, secondly chopper circuit, is discussed in detail.
分别讨论了功率因数校正模块、双正激变换电路模块和二次斩波模块的建模方法。
The working principle and characteristic of the Boost power factor correction (PFC) circuit operating in critical conduction mode are investigated.
介绍了临界模式功率因数校正电路的工作原理和特点。
Power factor power factor is the cosine of the Angle between the active power (kW) and apparent power (kVA) in a circuit.
功率因数功率因数是电路中有功功率(w)视在功率(VA)间夹角的余弦值。
Derived the formula for computing quadratic harmonics of output current in the single phase unit power factor ac DC converter based on analysis of the circuit module of the equivalent current source.
在基于对等效电流源电路模型分析的基础上，推导出了单相单位功率因数变流器输出电流二次谐波的计算公式，将输出二次谐波电流正、反向交替注入交流输入侧来抵消电流中的谐波。
In this paper, fundamental working principle of LED driving circuit and Power factor corrections (PFC) technique is given.
本文先阐述LED驱动电路和功率因数校正技术的基本原理。
In this paper, using unity power factor PWM rectifier and chopper circuit, it establishes a new type of switching power supply about PWM input rectifier circuit.
文章采用单位功率因数pwm整流器和斩波电路组成开关电源主体，建立以pwm整流电路为输入电路的新型开关电源。
Passive Power factor correction circuit, two-stage and single-stage APFC circuits are researched, which applications are given by comparison of their performance.
对无源pfc电路、有源两级PF c电路和有源单级PF C电路进行了分析及性能比较，指出它们分别适用的场合。
Novel circuit structure and topologies family of uninterruptible AC switching power supplies with high power factor are proposed.
提出了一类新颖的不间断高功率因数交流开关电源电路结构与拓扑族。
Based on equivalent circuit of asynchronous motor in stable state, the relationship between power factor and slip Angle frequency was deduced.
从异步电动机的稳态等效电路出发，推导出了功率因数与转差角频率之间的关系。
The experimental study and theoretical analysis on a novel 3kW boost power factor correction circuit with tapped inductor are made.
对一种新型带中心抽头电感斩波升压功率因数修正电路进行了实验研究和理论分析。
In this paper, the methods of power factor correction are discussed, and the principal of boost active power factor correction circuit operated in critical inductor current mode is analyzed in detail.
本文讨论了功率因数校正的方法，分析了电感电流工作于临界模式的升压式有源功率因数校正电路的原理。
Describes a power factor correction (PFC) circuit, in which the power circuit is a boost converter controlled general switch mode controller IC.
介绍了一种用普通开关电源专用集成电路控制块作为控制电路，以升压式变换器作为功率电路的功率因数校正电路。
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