查询词典 filter circuit

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我们为您提供下述的高品质元器件，以提升您所需设备的高可靠性：信号隔离/变送器、继电器/光电耦合器、防雷/浪涌保护器、开关电源、总线接口、滤波器/抗干扰模块、工业用接插件、传感器/执行器接口单元、印刷电路板接插件、现场接线箱、接线端子、按扭/指示灯、控制/总线电缆等产品。

It analyses the physical structure and electrical characteristic of varactor and introduces the general theories and typical circuit of electric tune filter.

本文对变容二级管的物理结构和电特性进行了分析，介绍了电调谐滤波器的一般理论和典型电路。

According to the basic design principle of high frequency receiving system. It is vital important for this system that how to design and produce the micro-strip filter and oscillation circuit in LNB.

根据高频接收系统电路的基本设计原理，如何设计与实现高频头中的微带滤波器和振荡器电路，对整个高频接收系统有至关重要的作用。

An injection type shunt hybrid active power filter was analyzed, it can suppress harmonic currents and compensate high capacity reactive power, nevertheless, a sharp boosting on DC-side voltage was found in application. Based on the analyses of the reasons, different solutions was proposed such as adoption of main circuit of multiple performances, the use of hysteretic control method, fore-feed control of reflowing current or direct control on DC-side voltage without a rectifier to supply.

研究一种兼具大容量无功补偿能力的注入式并联混合有源滤波器，并分析其在工程应用中发现的直流侧电压抬升现象及这种现象产生的原因，在此基础上提出从采用多重化主电路结构、滞环控制法、回灌电流前馈控制法和脱离整流电源直接对直流侧电压进行控制等几个方面来抑制直流侧电压抬升的方法。

Compared with the prior art, the invention has the advantages that:(1) the active neural microelectrode integrates signal collection/processing and stimulation function in the same preposed signal processing chip, which can reduce the disturbance of environmental noise, inhibit the attenuation caused by parasitic capacitance, filter polarized voltage and greatly improve the speech-noise ratio and stability of the whole microelectrode; and (2) the active neural microelectrode integrates digital logic control and stimulation circuit in the chip, so as to reduce the amount of output leads and simplify the complexity of subsequent circuits.

本发明相对于现有技术具有如下突出特点：(1)将信号的采集，处理以及刺激功能集成在一个前置信号处理芯片上，不仅减少了因为环境噪声的干扰，而且很好的抑制了寄生电容引起的衰减，滤除了极化电压，大大增强了整个微电极的信噪比和稳定性；(2)同时，将数字逻辑控制和刺激电路也集成在此芯片上，减少了输出引线的数目，简化了后续电路的复杂性。

The two wide used topologies of the main circuit of shunt active power filter which has the ability to compensate the neutral current are the three-leg split-capacitor topology and the four-leg topology.

具有中线电流补偿能力的并联有源电力滤波器主电路拓扑结构主要是三桥臂电容中分和四桥臂两种。

This paper, aiming at the topology structure of voltage-source shunt APF with filter-injecting circuit, advances a rigid output inductance calculation method based on harmonic current analysis which can work out the optimum output inductance values according to different compensation objectives.

本文尚有如下值得磋商之处：1、在许多APF应用场合，谐波负荷并不是稳定的三相全桥整流感性负载，各次谐波的幅值和相位都是变化的，其最大电流变化率难以确定，此时如何设计其输出电抗器？

At first the current sampling values pass through virtual digital CVTs. And then the voltage and current sampling values are processed by a low pass filter. According to the instantaneous value of transmission line voltage, the current instantaneous values of shunt reactors and P equivalent circuit capacitance can be calculated. After removing these two kinds of current, sampling value differential protection based on all components and fault component can be applied.

由线路电压瞬时值分别实时计算出流入并联电抗器和流入线路Π型等值电路两侧电容的电流瞬时值，再从线路每侧电流除去这两部分电流，用得到的新电流瞬时值作常规采样值差动和故障分量采样值差动保护计算。

The G10 Series is also Full HD and features panels Panasonic calls NeoPDPs, which combine improvements in materials and processes, discharge gas and cell design, and circuit and drive technology, to provide twice the luminous efficiency and improved energy efficiency. The G10 Series also incorporates a 600HZ Sub Field Drive, 2,000,000 :1 dynamic contrast ratio and design improvements, such as an AR Filter and swivel stand.

同样为全高清设计的G10系列配有松下的新型配电等离子板，这个系列产品融合了在材料、制作工艺、废气排放、元件设计、电流电路以及驱动技术上的改良，将会提供加倍的发光效率和能源应用效率。G10系列同时还采用了600HZ的次场界驱动，2，000，000：1的动态对比率以及自回朔滤波器以及旋转式操作台等设计方面的改良。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。