But it was around two years ago, when Pfc.
然而约两年前，一等兵(Pf c .)。
A method of PFC in paralleled inverted power system.
三逆变电源并联系统的功率因数校正方法。
It can also be used for passive lossless snubber in PFC.
提出的结构可以应用于实现PFC的无源无损吸收。
The thesis also analyzes the average current type of PFC.
论文还研究了平均电流型PF C电路。
PFC is one of the key points in the design of power supply.
功率因数校正(PFC)是电源设计中的关键内容之一。
Finally the prospect of the charge pump PFC circuit is looked forward.
最后展望了电荷泵式PF C电路的应用前景。
The paper discussed a half-bridge converter of single-stage PFC with ZVZCS.
文章讨论了一种带有ZVZCS的单级PFC半桥变换器。
At the end of the article, it summarizes the trends of active PFC technology.
最后概括了有源功率因数校正技术的发展趋势。
As a result of it, PFC has become one of the study focuses in power electronics.
这使得功率因数校正技术成为电力电子研究的热点之一。
This study presents a new single - stage single - switch PFC flyback DC converter.
文章研究了一种新型单级单开关PF C反激变换器。
Moreover, mice spleen weight, the number of spleen lymphocyte and PFC were determined.
通过溶血空斑试验测定小鼠脾抗体形成细胞数(pfc)。
These several methods are different from traditional active PFC solution with PFC control IC.
这几种方法不同于传统带PF C控制IC的有源pfc解决方案。
Power factor correction (PFC) technique based on SEPIC converter is researched in this paper.
本文对基于SEPIC变换器的功率因数校正技术进行了研究。
A flyback converter with zero current switching (ZCS) resonant and power factor correct (PFC) is proposed.
提出一种具有零电流关断(ZCS)的反激式单级功率因数校正(PFC)变换器。
The basic principles of PFC are introduced, and PFC algorithm for first-order plus dead-time system is delivered.
介绍了PF C的基本原理，推导了一阶加纯滞后系统PF C算法。
This paper discusses the principle of power factor correction (PFC) and describes the realization of a PFC rectifier.
本文介绍功率因数校正(PFC)原理，以及一个PF C整流器的实现。
Base on chip L6561, a PFC preregulator for 400w metal halide lamp ballast is designed with wide input and output range.
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。
The new approaches for charge pump power factor correction (PFC), digital PFC and on - line UPS with PFC are introduced.
介绍了充电泵功率因数校正（PFC）、数字PFC和带PFC的在线UPS的几种新方法。
Recently, internal and overseas investigators are developing single-stage PFC circuit, which has higher PF and lower price.
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。
Results from our laboratory suggests that the PFC provides an infrastructure for the rapid synthesis of the diverse information.
从我们的实验结果推测，额前皮质能在多样化的讯息下，提供一个迅速整合的基本结构。
Zero current transition (ZCT) topology of the single switch three phase boost power factor correction (PFC) rectifier is proposed.
提出了一种零电流开关结构的单开关管的三相升压功率因数校正整流器。
This dissertation is focused on the research of soft-switching technology, PFC technology, and integrated power electronic module.
本文的研究包括了软开关、功率因数校正和电力电子集成技术等三个方面的内容。
While other animals' brain regions development in synchrony, in humans, the development of the PFC lags far behind that of other areas.
其他动物的大脑区域发育是同步的，而人类的PFC发育远远慢于大脑其他区域。
This claim hinges on a peculiar and unique feature of our cognitive architecture: the stunningly slow development of the prefrontal cortex (PFC).
这一观点是基于人类奇特而独一无二的认知结构——发育惊人缓慢的前额皮质(pfc)。
To improve the tracking performance of ac servo-system, PFC-PID cascade control strategy is presented by combining the PFC with PID control.
为了提高交流伺服系统的跟踪性能，将预测函数控制(pfc)和PID控制相结合，提出了一种PF C - PID串级控制策略。
To reduce the component counts and the cost, the single-stage power factor correction (PFC) techniques have attracted more and more attention.
在低功率应用中，为了减少器件和成本，单级功率因数校正(PFC)技术越来越受到人们的关注。
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。
Results The clearance rate of charcoal particles, the level of PFC and serum hemolysin and the spleen and thymus index decreased in aging mice.
结果老龄小鼠碳粒廓清指数降低，抗体形成细胞的溶血能力下降，血清溶血素水平下降，脾指数及胸腺指数降低。
Results The clearance rate of charcoal particles, the level of PFC and serum hemolysin and the spleen and thymus index decreased in aging mice.
结果老龄小鼠碳粒廓清指数降低，抗体形成细胞的溶血能力下降，血清溶血素水平下降，脾指数及胸腺指数降低。
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