提出了一种基于桥式逆变电路的新型单级功率因数校正变换器的电路拓扑。
This paper introduces a novel topology about single-stage PFC converter based on bridge inverter and analyzes its theory of operation.
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。
A flyback converter with zero current switching (ZCS) resonant and power factor correct (PFC) is proposed.
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.
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。
To reduce the component counts and the cost, the single-stage power factor correction (PFC) techniques have attracted more and more attention.
本文首先介绍了功率因数校正技术的基本原理和基本方法，对单级功率因数校正技术的现状进行了分析和对比。
Firstly this paper introduces the principles and methods of power factor correction technology, and single-stage power factor correction techniques are analyzed and compared.
通过实验结果表明，单级功率因数校正装置可以实现较高的功率因数、较低的总谐波畸变，而且输出电压纹波小。
Experiment results showed that the correction device of power factor could realize high power factor, low harmonic distortion and low ripple of output voltage.
介绍了一种新型的压力先导控制伺服阀，该阀的功率放大级采用双阀芯结构代替传统单阀芯结构。
A new servovalve using a pressure control pilot state was introduced, which USES two spools instead of single spool in power magnifying stage.
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。
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.
分析了该电路的基本工作原理、关键参数的设计计算，仿真结果表明这种新型的单级大功率开关电源功率因数可达到0 . 995。
Moreover, its operation process principles and critical parameters are analyzed, its simulation results proved that the novel single stage high power switch source's power factor can achieve 0.995.
构造基于反激拓扑的单级高功率因数的大功率电源的前提是弄清变压器的储能和释放规律。
The precondition of constructing single-stage high power factor high power supply based on flyback topology is that the release rule of transformer energy-storage is clear.
双级减速器除了存在单级的传动问题以外，还有外形尺寸协调、传动比分配、功率流分流及机构平衡等问题。
Besides existing the single transmission questions, two grades of reducer have other problems, such as dimension coordinate, transmission radio distribute, power flow direction and balancing.
环形腔输出后加入单级光放大提高输出激光的光功率，分析了放大对激光性能的影响。
A single stage amplifier was used outside the loop cavity to increase the output power, and the influence of amplification on laser quality was analyzed.
由于受到纤芯面积、非线性效应等因素的限制，单芯光纤激光器的输出功率极限值为千瓦级。
The maximum output power of an optical fiber laser using conventional single core fiber is only several kilowatts due to the nonlinear effect in fiber and the limited cross -section of fiber core.
只要制造商不是评价的放大器，其输出功率在此截断的国家，放大器通常被称为A级，单端。
As long as the manufacturer isn't rating the amplifier for its output power in this clipped state, the amplifier would normally be called class a, single-ended.
只要制造商不是评价的放大器，其输出功率在此截断的国家，放大器通常被称为A级，单端。
As long as the manufacturer isn't rating the amplifier for its output power in this clipped state, the amplifier would normally be called class a, single-ended.
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