查询词典 high voltage

The invention relates to an amplifier circuit containing a high-frequency transistor (1) and having a circuit (2) for adjusting the operating point, which provides a base current for the high-frequency transistor (1) according to the voltage released at a resistor (3) which is connected in the collector ring of the high-frequency transistor (1). The circuit (2) has a differentiating unit (20), fed by the supply voltage, which compares the voltage released at the resistor (3) with a reference voltage.

带有高频晶体管(1)的放大器电路具有一个用于工作点调整的电路(2)，其依赖于在连接在高频晶体管(1)的集电极电路中的电阻(3)上下降的电压为高频晶体管(1)提供基极电流，电路(2)具有一个由供电电压馈电的差分节(20)，其把在电阻(3)上下降的电压与基准电压比较。

Log-domain companding technique takes advantage of the exponential I/V characteristics of the active devices such as bipolar junction transistors, compressing the dynamic range of the input sigal and reducing internal voltage amplitudes, it can maintain large dynamic range and high operating frequency under low supply voltage , the main area of application for this technique is the implementation of continuous-time fully integrated filters with low voltage, wide dynamic range, high-frequency, and wide tenability.

对数域压扩技术利用BJT晶体管等有源器件的指数Ⅰ-Ⅴ特性，对信号作对数压缩处理，大大降低了电路内部节点电压的摆幅，能在低电源电压下保持大信号动态范围和高工作频率，该技术的主要应用是设计具有低电压、宽调谐范围、高工作频率和宽动态范围特性的连续时间全集成滤波器——对数域滤波器。

This paper introduces the research and implementation of all-purpose high-speed test adapter for ADC. The main contents includes two methods about how to testing the static parameters and dynamic parameters for ADC. The servo loop method is proposed to static parameters, by using the test principle of high-precision voltage source, high-precision voltage meter and digital comparator. To dynamic parameters, the DDS chip of AD9851 is used to generate sine waves with high signal to noise ratio, then the high-s...

servo loop ； FFT ；本文介绍了关于ADC高速通用测试适配器的研究和实现，主要介绍了测试ADC芯片静态参数和动态参数两种方法，针对静态参数，提出了用伺服环的方法，采用高精度电压源，高精度电压表和数字比较器的测试原理；针对动态参数，提出了用DDS芯片AD9851产生高信噪比的正弦波，采用高速采样模块采集数据，最后用FFT算法对采集的数据进行处理。

For improve altogether mould inhibit than,in before the high altogether mould inhibit output altogether mould voltage feedback to shouldering by ends public of power also among the amplifiers than instrument in grade, make it put power voltage until mould input voltage float , setover voltage follow mould inputs the voltage into together very much each altogether not to transport, thus improved together mould inhibit to.

为提高共模抑制比，在前级高共模抑制比仪器放大器中还将输出共模电压反馈到正负电源的公共端，使运放电源电压随共模输入电压浮动，各极偏置电压都跟踪共模输入电压，从而提高了共模抑制比。

Unit 22 400vac low voltage distribution pen busbar unit 22 400vac low voltage distribution cubicle lighting.plug and heating unit 22 400vac low voltage distribution measuring and ac-distribution unit 22 400vac low voltage distribution 220vdc control2 unit 22 400vac low voltage distribution control circuit breaker unit 22 400vac low voltage distribution automatic interconnection2 unit 22 device list unit 22 400vac low voltage distribution cubicle lighting.plug anh heating unit 22 400vac low voltage distribution ac/dc supply control unit 22 400vac low voltage distribution cb supply 1 control unit 22 400vac low voltage distribution cb coupling control unit 22 400vac low voltage distribution cb supply 2 control unit 22 400vac low voltage distribution cb supply 1 control unit 22 400vac low voltage distribution control unit 22 400vac low voltage distribution high pressure pump.bearing de control unit 22 400vac low voltage distribution stillstand heaters control control unit 22 400vac low voltage distribution oil mist suction device de control unit 22 400vac low voltage distribution h press pu.bearing de stand-by control unit 22 400vac low voltage distribution oil mist suction device nde control unit 22 400vac low voltage distribution indication unit 22 400vac low voltage distribution automatik input unit 22 400vac low voltage distribution circuit diageam unit…400vac low voltage distribution front view unit…400vac low voltage distribution inside view unit…400vac low voltage distribution cubicle view gauge board cover sheet gauge board front view gauge board inside layout gauge board fower supply gauge board cubicle lighting/heating gauge board 24vdc distributidn gauge board fault indication lamps gauge board fault messages to control gauge board temperatures thrust bearing gauge board temperatures de/nde guiide bearing gauge board temperatures de/nde bearing oil reservoir gauge board temperatures cold air from coolers gauge board display temperatures cooler 1-10 gauge board display temperatures cooler 11-20 gauge board temperatures hot air from coolers gauge board display tem.

单位 22 400 vac 低的电压分配钢笔 busbar单位 22 400 vac 低的电压分配小卧室 lighting.plug 和暖气单位 22 400 vac 低的电压分配测定和 ac-分配单位 22 400 vac 低的电压分配 220 vdc control2单位 22 400 vac 低的电压分配控制线路断路器单位 22 400 vac 低的电压分配自动机械 interconnection2单位 22本装置目录单位 22 400 vac 低的电压分配小卧室 lighting.plug anh 暖气单位 22 400 vac 低的电压分配 ac/直流补给控制单位 22 400 vac 低的电压分配 cb 补给 1 控制单位 22 400 vac 低的电压分配 cb 联结控制单位 22 400 vac 低的电压分配 cb 补给 2 控制单位 22 400 vac 低的电压分配 cb 补给 1 控制单位 22 400 vac 低的电压分配控制单位 22 400 vac 低的电压分配高度强迫 pump.bearing de 控制单位 22 400 vac 低的电压分配 stillstand 加热器控制控制单位 22 400 vac 低的电压分配油雾吸装置 de 控制单位 22 400 vac 低的电压分配 h 杂志报纸 pu.bearing de 台子-被控制单位 22 400 vac 低的电压分配油雾吸装置 nde 控制单位 22 400 vac 低的电压分配指示单位 22 400 vac 低的电压分配 automatik 输入单位 22 400 vac 低的电压分配线路 diageam单位…400休假低的电压分配前面视野单位…400休假低的电压分配内部看单位…400休假低的电压分配小卧室视野精确计量董事会掩护张精确计量董事会比较前面的视野标准度量在地面区划之内搭乘标准度量董事会 fower 补给标准度量董事会小卧室照明/暖气标准度量董事会 24 vdc distributidn标准度量董事会过失指示灯精确计量董事会过失信息控制标准度量董事会温度插入了举止标准度量董事会温度 de/ nde guiide 举止生的标准度量董事会温度 de/ nde 涂油水于水库标准度量董事会来自冷却器的温度冷空气精确计量董事会展览温度冷却器 1-10精确计量董事会展览温度冷却器 11-20标准度量董事会来自冷却器的温度热气精确计量董事会展览 tem。

The measuring systems are successfully used in the electromagnetic pulse measurement generated by impulse voltage discharge and switch operation in 500kV substations. Full waveforms of transient electric field, transient magnetic field, transient voltage of high frequency relay channels and low voltage alternative current power during switch operation period have been obtained, and the fast transient pulses in high frequency relay channels and AC power have been caught.

将该套测量系统成功地应用于500kV变电站开关操作产生的电磁脉冲的研究中，得到了开关刀闸操作时暂态电场、磁场、高频通道、交流电压等的完整波形，发现低压交直流电源系统和高频保护通道中存在非常严重的脉冲群干扰，初步解释了变电站二次电源模块经常损坏和高频保护经常误动的原因，提出了加强保护和研究的建议，进一步验证了测量系统的先进性。

Due to the change of the hardware and high voltage during the small angle GDH experiment data-takeing, the CO2 gas threshold Cherenkov detector on HRS at Hall-A in Jefferson Jlab was calibrated for seven times.

在JLab的A大厅上的小角度GDH实验中，因为实验过程中硬件条件的变化，对位于高分辨谱仪上的CO2阈契仑柯夫探测器进行了多次刻度修正，并得到7套修正系数。

A 0.1Hz VLF high voltage system is developed through the coorperation of Harbin University of Science and Technology and Harbin Power Administration.

介绍了哈尔滨理工大学和哈尔滨电业局合作研制的0.1Hz超低频高压试验系统。

Harwell was mainly concerned with the development of reactors, for scientific research and for the nuclear power industry. Cockcroft showed me around Harwell when I visited there in the 1950s. The most conspicuous feature of Harwell at that time was a huge array of high-voltage cables connecting the laboratory to the national electricity grid.

哈尔维尔与反应堆的发展密切相关，这些反应堆有用于科学研究的，也有用于核能开发的，二十世纪五十年代，我参观哈尔维尔时，考克饶夫为我做向导，那时的哈尔维尔最引人注目的景观就是连接实验室和国家电网的一排排高压电缆。

It can be used in testing other high voltage resistant equipment and components and in the calibration on static electricity H.V.

适用于防爆真空管、高压继电真空管和其它高耐压设备和器件的测试以及静电高压表和各种直流高压表的校准。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。