查询词典 bridgeless

Dual Boost PFC is a kind of simple bridgeless boost PFC and easily to control.

Dual Boost PFC即为一种适用于大功率的无桥PFC拓扑。

Comparing with traditional Boost PFC circuit,bridgeless Boost PFC circuit can improve efficiency and has advantage in medium and high power applications.

与传统Boost PFC电路相比，无桥Boost PFC电路能提高整机效率，特别适用于中大功率电路中。

With PWM control chip L4981A, the bridgeless AC/DC topologic circuit is constructed. Its principal is analyzed and simulated with PSpice, its design process is introduced,and the experimental result is shown.

通过高功率因数PWM控制芯片L4981A，构建桥式AC/DC拓扑电路，分析了其工作原理并进行了系统仿真，叙述了拓扑电路的设计和参数选取过程，最后给出了样机实验结果。

In view of this, a new single phase PFC circuit which uses the Bridgeless PFC power module and partial PFC control method is presented.

但是由于该PFC电路采用不可控整流桥，使用的功率器件数量较多，导致功率损耗较大，且使用的PFC升压电感较昂贵，因此具有效率较低和成本较高等不足。

The resonant phenomenon of Bridgeless Boost PFC with split inductor s is analyzed using experiments, simulation and equivalent circuit methods.

通过实验、仿真和等效电路模型分析方法对分立电感无桥Boost PFC电路电感电流上叠加有高频谐振电流的现象做出了详细的分析和研究，指出高频谐振是PFC分立电感与电路的寄生电容组成LC振荡回路所引起的，确定了谐振电流的路径和谐振频率的大小。

Using two kinds of representative bridgeless PFC topologies as main circuit and IR1150 as control chip, two bridgeless PFC prototypes have been designed and the EMI of the two circuits has been tested.

采用两种比较有代表性的无桥拓扑作为主电路结构，控制电路采用单周控制芯片IR1150，设计了试验样机，并对两种PFC电路的EMI进行了测试分析。

Based on bridgeless PFC topology,a 1 500 W prototype has been designed.The control chips use L4981 and IR1150 based on average current control and one-cycle control technology.

实验基于无桥Boost PFC拓扑，控制电路分别采用&平均电流控制&技术的芯片L4981和&单周期控制&技术的芯片IR1150，研制出一台1500W的实验样机，并对两种控制电路进行了详细的对比分析。

Power factor correction ; bridgeless ; average current control ; one-cycle control ; L4981; IR1150

功率因数校正；无桥；平均电流控制；单周期控制； L4981； IR1150

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。