介绍了临界模式功率因数校正电路的工作原理和特点。
The working principle and characteristic of the Boost power factor correction (PFC) circuit operating in critical conduction mode are investigated.
现在国内外正在开发研究单级功率因数校正电路，具有很高的功率因数，且成本低。
Recently, internal and overseas investigators are developing single-stage PFC circuit, which has higher PF and lower price.
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。
A novel ZVT power factor correction circuit is proposed, in which the saturable core and the-capacitor are added to the auxiliary switching network.
分析了交错并联功率因数校正电路的工作原理，并进行了建模分析及控制电路的设计。
The working principle of interleaving PFC converters is analyzed, small-signal model analysis is conducted, and control circuits are designed.
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。
As the heart of the power factor correction circuit, the gain modulator gets a high power factor by controlling the input current.
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。
This paper analyse and design the boost PFC, the experiment result show that DC circuit attain high high power factor.
分析了有源功率因数校正电路的工作原理，详细介绍了关键电路参数设计方法，并给出了设计实例。
The operation principle of APFC circuit is analysed, the design method of the key circuit parameter is particularly introduced, and a design example is also given.
最后进行了交错并联功率因数校正电路的实验研究，详细讲述主电路、控制电路及延迟电路的设计过程。
The design process of the main circuit, the control circuit and the time-delay circuit are elaborated after an experimental research of interleaving PFC converters.
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。
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.
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。
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.
基于常用的L6561芯片，设计了宽输入输出范围的400瓦金属卤化物灯电子镇流器功率因数校正电路。
Base on chip L6561, a PFC preregulator for 400w metal halide lamp ballast is designed with wide input and output range.
提出了一种适用于小功率逆变电源的新型功率因数校正电路拓扑方案，分析了其基本工作原理及参数设计要求。
A novel power-factor corrector topology applicable to the small welding power inverter is proposed. The basic operation principles and design rules are presented in detail.
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。
Describes a power factor correction (PFC) circuit, in which the power circuit is a boost converter controlled general switch mode controller IC.
本文在超声发生器中加入功率因数校正电路（APFC），并利用单片机控制数字电位器实现了对电压反馈网络的调节，从而实现APFC输出电压在一定范围内的自适应控制。
The self-adaptable control of output voltage could be realized under certain range by adding a APFC in ultrasonic generator and adjusting voltage feedback network with digital potentiometers.
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。
The principle of active power factor correction circuit operated in critical inductor current mode is analyzed in this paper in detail.
设计了用于电流输入连续型电荷泵功率因数校正电子镇流器的调频电路，以减小电路的峰值系数。
Have designed the frequency modulation circuit in the CIC-CPPFC electronic ballast circuit, which would decrease the crest factor of circuit.
设计了用于电流输入连续型电荷泵功率因数校正电子镇流器的调频电路，以减小电路的峰值系数。
Have designed the frequency modulation circuit in the CIC-CPPFC electronic ballast circuit, which would decrease the crest factor of circuit.
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