查询词典 linear switching

FEATURES Clickless Bilateral Audio Switching Guaranteed Break-Before-Make Switching Low Distortion: 0.003% typ Low Noise: 1 nV/Hz Superb OFF-Isolation: 120 dB typ Low ON-Resistance: 60 typ Wide Signal Range: VS = 18 V; 10 V rms Wide Power Supply Range: 20 V max Available in Dice Form

特点无杂音双边音频切换保先断后接开关低失真：0.003％典型值低噪声：1纳伏/赫兹卓越的隔离性：120分贝典型值低导通电阻：60典型宽信号范围：比= 18伏； 10 V RMS的宽电源电压范围：20 V的最大可用表格中骰子

Compared with the active soft-switching technology, the passive method without additional , switching-component , inspectable measures and controlled recources has powerful predominance on additive cost , dependability, transpositional efficiency and performance-cost ratio.

在无源和有源两大类软开关技术中，不使用额外开关元件、检测手段和控制策略的无源方式在附加成本、可靠性、变换效率、性价比等方面占有较强优势。

This paper deals with the surge protection of a 220kV H—GIS and analyzes the effects of metal oxide surge attesters on reducing the incoming lightning overvolrages by means of numercal method Meanwhile, there is a kind of over-voltagey which may be rather critical for GIS, e·g·the switching surges with extremely high frequeuly produces by GIS-G switching-off of some loadless duses.

本文讨论220kV混合式GIS变电站过电压保护，用数值计算方法分析氧化锌避雷器对降低过电压的作用，并讨论了有一种类型的过电压可能对GIS要求更为严格，即在主回路中用GIS隔离开关切除空母线引起某些高频操作过电压，因此在绝缘配合时要相应考虑。

Especially it is pointed out that a system is quadratically stable under a switching sequence if and only if the system is asymptotically stable under a periodic switching sequence.

特别指出，一个系统可经切换达到二次稳定的充要条件是该系统可经周期切换渐近稳定。

To design and realize a large scale video frequency switching network, which is rearrangeable and nonblocking, taking the video crosspoint switch as the basic switching unit, a three-stage nonblocking Clos network was constructed, and the signal route was selected by a route table.

设计和实现一个可重排无阻塞的大规模视频矩阵切换网络。基于多级互连网络，以视频交叉点开关作为基本的交换模块，组成一个三级非对称Clos网络。

In the paper,vacuum circuit breaker switchingtransformers process is simulated with Saber software and parameters are analyzed Theresults indicate that overvoltage peak value of switching no load transformers is not muchhigh,especially for switching load transformers.Yet,reignition overvoltage might doharm to transformer coils by cumulative effects for its surge steepness.The measures liesin setting parallel connection capacitance in practice working.

本文利用Saber仿真软件对真空断路器切除变压器的一个完整过程进行了仿真计算，并详细分析了各种参数对过电压的影响，结果表明，尽管实际中切除空载变压器过电压的幅值并不是很高，特别是带负载变压器的情况，但重燃过电压的陡度较大，对变压器绕组的纵绝缘有累积作用，在实际工作中应以并联电容为基础的限压装置。

Based on the working principle of fuzzy control and characters of soft-switching technology, it applies fuzzy control to soft-switching power converter and designs a normal fuzzy controller for SEPIC power converter introduced former. By simulating the fuzzy control system,it validates the availability and rationality of this fuzzy controller.

根据模糊控制的工作原理和软开关技术的特点，将模糊控制引入到软开关功率变换器中，为前面介绍的 SEPIC 功率变换器设计常规模糊控制器，并进行了仿真分析，得出仿真结果，验证了该模糊控制器的有效性及合理性。

Setting zero-current switching quasi-resonant SEPIC converter as example, it analyzing the switching mode of SEPIC converter in detail based on the instance of switches' on-off.

以零 电流开关准谐振 SEPIC 变换器为例，根据开关管的通断情况，详细分析了 SEPIC 变换器的开关模态。

An automated vocabulary switching system of thesauri including three switching operations is designed in this paper,in which three Chinese thesauri,e.

本文在借鉴国外叙词表转换系统研制方法的基础上，以《汉语主题词表》、《社会科学检索词表》和《经济学管理学论文题录索引词汇表》三种汉语叙词表为实验样本，结合我国叙词表的特点，以金融银行学科为例，用计算机程序设计了一个实验性的叙词表词汇转换系统。

Referenced to the CSR's trilogic PWM signal generation, an approach to achieve lowstress natural commutation of switching devices by reshuffling the vector composition sequence, resulting reduced switching loss. With the background of and well instanced by the Xinjiang Autonomous Region's Key SciTech Project"Solar Photovoltaic grid-connected inverter", the dissertation work implemented the new approach of a grid-connected PV inverter that was of single-phase VSR topology and with MPPT .

在研究了两类电网不平衡时的VSR控制策略基础上，提出了一种新型的基于无阻尼振荡控制器的VSR不平衡控制策略，在简化控制结构的同时，有效地改善了电网不平衡时的VSR控制性能；通过二、三值逻辑开关函数间的转换，系统地描述了三相CSR三值逻辑PWM信号发生中的状态切换；结合三相CSR三值逻辑PWM信号发生规律，提出了通过调整矢量合成顺序而使功率管获得自然换相的低电压应力SVPWM控制，从而有效地降低了功率管的开关损耗。

Researches reveal that students who suffer from corporal punishment tend to resort to violence in their future life.

研究表明遭受过肉体惩罚的孩子倾向于在他们今后的人生中使用暴力。

Total sugar of sarcocarp and chlorophyll of pericarp increased firstly, and then decreased afterward along with altitude; Titratable acidity, ascorbicacid and anthocyanin of pericarp were increased along with altitude; The content of protein increased firstly and decreased afterward along with altitude; Carotenoid of pericarp were decreased along with altitude.

果肉总糖和果皮叶绿素含量随海拔高度升高先升高后降低；可滴定酸、维生素C和果皮花青苷含量均随海拔升高而升高；蛋白质在1720m处最大，1420m处最小；果皮类胡萝卜素随海拔升高而降低。