查询词典 voltage

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。

Related technology is also researched.Finally,the thermobattery and the booster and steady voltage circuit module are tested by experiments,the result shows that the charging start-up voltage of booster and steady voltage circuit is0.911V,current is70mA.Output power reaches the maximum when equivalent internal resistance of semiconductor thermobattery series-parallel connection matches with load resistance.

并研究了工艺，最后通过试验测试温差电池组和升压稳压电路，结果显示升压稳压电路的充电启动电压为0.911V，电流为70mA，当半导体温差电池串并联的等效内阻和负载电阻匹配时输出功率达到最大。

The new high voltage pulse generator is mainly composed of condense capacitors, hydrogen thyratron, high voltage transformer and voltage adapter.

介绍了一种可调的高压脉冲发生器，该发生器主要由储能电容器组、氢闸流管、电压调节器、保护电路、高压变压器等部件组成。

The composition voltage, the electric current double closed loop voltage-stabilized source, used the integrated phase shifting crystal thyratron module to do for the electrical energy transformation component, in detail has calculated the rectification main circuit main component parameter; In the pulse-duration modulation part, used the special-purpose integrated circuit to realize the frequency modulation to adjust the pressure, did take IGBT as the power transformation component, realized the output voltage frequency modulation to adjust the pressure, and has calculated the related parameter.

在调压稳压电压源设计中采用二阶工程设计法设计了电压和电流调节器，组成电压、电流双闭环稳压电源，采用集成移相晶闸管模块做为电能变换器件，详细计算了整流主电路主要器件的参数；在脉宽调制部分，采用专用集成电路实现了调频调压，以 IGBT 做为功率变换器件，实现了输出电压的调频调压，并计算了有关参数。

Along with of microprocessor of development, the urgent demand have to match with it mutually of connect the issue that ocular exterior measure the equipments directly, root for a living through applied personnel in technique in science, find out a kind of exits already of but the past was output the equipments by the tiny electric current, electric voltage that people neglect, namely the high man in Rogowski electric current spreads to feel machine with divide to press the machine, its output's is several 100 peaceful electric current s/ V electric voltage can control with tiny model protection directly the equipments pick up a people, satisfying the request that protection control measure, and basic dissolves traditional electromagnetism type the electric current, electric voltage feels with each other saturated weakness in machine.

随着微机的发展，迫切要求有配合它的相互连接的问题，眼球的外部测量设备直接，根为口奔驰，通过应用型人才，在技术科学，找到了一种已经退出的，但过去仅仅是输出设备是由微小的电流，电压，人们忽视，即高文在罗柯夫斯基电流差突然觉得机器与隔膜，迫使机，其输出的是几个100和平电流s音频/视频电电压可控制与微小模型直接保护的设备，接了一个人，满足了要求保护控制措施，并基本溶化传统的电磁式电流，电压觉得与对方饱和疲软机器。

According to time, voltage stability can be divided into longer-term voltage stability and transient voltage stability.

从时间上划分，电压稳定性问题可以分为中长期电压稳定和暂态电压稳定。

Buck and Boost topology switching power conversion circuits as the core of this system, ultra low power MSP430F1222 microcontroller-based controller, microcontroller produced by the PWM pulse width modulation signals, respectively, two-way control switch voltage conversion circuit the turn-on and turn-off in order to achieve the above two kinds of topology switching power conversion circuit, and then to draw power from the flow of electrical energy has been filled into the rechargeable battery, and using microcontroller A / D input voltage implementation of the monitoring, according to the input voltage switching buck - circuit at a lower cost to achieve a highly efficient energy transfer, and the circuit is simple, the parameter to determine easy, self-low power consumption,to achieve full-featured.

本系统以Buck降压和Boost升压拓扑结构开关电源变换电路为核心，以超低功耗单片机MSP430F1222为主控器，由单片机产生PWM脉宽调制信号，分别控制两路电压变换电路中开关管的导通与关断从而实现以上两种拓扑结构开关电源变换电路，进而从一直流电源中吸取电能充入可充电电池，并利用单片机A/D对输入电压实施监测，根据输入电压切换升降压电路，以较低的成本实现了高效率的电能转移，并且电路简单、参数确定容易，自身功耗低，实现功能完整。

Bundle connection with at least 4 tiers forbearing-high-temperature rubberized fabric. Note: make sure high-voltage tie-in is clean when install stabilizer and headlight. Uncleanly high-voltage tie-in will make startup failure for creepage. High-voltage line should be moored after installation, avoid rubbing with metal nearby.

注意：安定器及灯泡的高压线安装时应注意清洁，不清洁的高压接头会漏电而产生起动困难的故障；且高压线安装后，必须用尼龙扎丝将其固定，避免和周围的金属磨擦

In this paper, according to the equation of voltage vector of single-phase motor operating at symmetrical condition, author presents a new voltage-vector PWM method of variable frequency control for single-phase motor. In system, the voltage vector is used as a control parameter.

本文根据单相电动机对称运行时的合成电压矢量方程，提出了以合成电压矢量为控制量的单相电动机电压矢量式PWM变频调速控制方法，并进行了计算机仿真及制作了单相变频器。

Thirdly, the thesis has conducted the simulation research of the three-phase voltage-type PWM rectifier system, has established the simulation models of the main circuit, the space voltage vector PWM control module and PI regulator, and has carried on the simulation for the three-phase voltage PWM rectifier system.

其次，介绍三相电压型PWM整流器的控制方法，深入研究三相电压型PWM整流器的空间电压矢量脉宽调制控制方法，进行三相电压型PWM整流器的PI控制调节器的设计。

Nowadays, most of research are to build a transmutative Petri Nets through adding controlling place sets, controlling arc sets and controlling policy to the basic Petri Nets, while the Controlled Petri Nets could be used to argue many controlling theory problems conveniently and to induce many logically and physically supervisory and solve the Event Feedback Controlling Problems and State Feedback Controlling Problem in DEDS supervisory theory.

目前大多数的研究表现为在变形后的受控Petri网基础上，利用各种方法求得各种逻辑型、结构型控制器，解决DEDS监控理论中的事件反馈控制问题与状态反馈控制问题。

On one hand, there are discussions with the works council and union about extension of short time working up to the end of September.

一方面，有讨论，工程理事会和联盟关于延长工作时间短至9月底。