电路

The controller includes multi-channel switching circuit, interface and conversation circuit, input and output circuit, manual button control circuit, LCD driving circuit, real-time clock circuit, preparedness store circuit, keyboard processing circuit and dial switch circuit.

该控制器硬件包括多通道切换电路、接口及转换电路、输入输出电路、手动按钮控制电路、手动与自动切换电路、液晶显示驱动电路、实时时钟电路、预案存储电路、键盘处理电路、拨码开关电路。

precise calculating formula is derivated to determine magnification ratio of voltage,input resistance and output resistance in amplifying circuits based on th feedback circuit model with cascade voltage.with th new calculating methods put forward by the author,it is possible to solve the problems in terms of calculation in amplifying circuits,the key problem being low level of exactness.the research shows the influence of components′ parameters of basic amplifying circuits and feedback circuits on feedback amplifying circuits.the results of the research may contribute to design amplifying circuits and electronic instrument with higher performance,due to the simpler calculation in the design of feedback circuit with cascade voltage.

摘 要：在建立电压串联反馈电路模型基础上，推导出放大电路中的电压放大倍数、输入电阻、输出电阻的精确计算公式。提出新的计算方法，从而解决了放大电路计算不方便，精确度不高、准确性不够的问题。同时进一步揭示了基本放大电路、反馈电路元件参数对反馈放大电路的影响关系。为设计出高性能放大电路及电子设备指明了方向，更加方便于电压串联反馈电路的计算。

The chip consists of a power mos, mode select circuit, driving circuit, and two series of controller circuit. The controller consists to the active current sensing circuit, sample and hold circuit, hysteresis current comparator, voltage to current converter, error amplifier and non-overlap circuit.

晶片包含一组功率电晶体、模式选择电路、驱动电路及二组控制电路，控制电路主要架构有主动式电流感测电路、取样保持电路、磁滞电流比较电路、电压对电流转换电路、误差放大器及非重叠电路。

Set off from the function request analysing the instruction fuse, have done more detailed introduction first to it's every ingredient; The design and concrete parameter having followed , carrying out a scheme on the circuit directing fuse power source boosting circuit , host to get angry , electricity basics circuit such as insurance circuit , self-destroying circuit , self-deactivating circuit here on the basis, are chosen; Constitute every circuit optimization finally, having become a overall circuit module

从分析指令引信的性能要求出发，首先对其各组成部分作了较详细的介绍；随后，在此基础上，对指令引信的电源升压电路、主发火电路、电保险电路、自毁电路、自失能电路等基本电路进行了方案设计和具体参数选取；最后，将各电路优化组合成了一个整体电路模块。

The control circuit takes the singlechip computer as the nucleus, its peripheric circuits include data acquisition circuit, pulse width adjusting circuit, waveform chosen circuit, electric machinery circuit and interface circuit.

控制电路部分以单片机为核心，其外围电路包括数据采集电路，脉宽调制电路，波形选择电路，电机控制电路，键盘、指示灯和显示接口电路及串行通讯接口电路。

Subcircuit models are designed and simulated, which includes Bias Current Source, Voltage Reference, Error Amplifier, PWM Comparator, Driver Circuit, Protection Circuits for Over-temperature, Over-current. At last, combined with periphery component, the circuit is simulated, and the result meets the anticipant requirement.

并对集成电路内的各个模块包括电流偏置电路、基准电压电路、误差放大电路、三角波振荡发生电路、PWM比较电路、驱动电路、过热保护电路和过流保护等进行了具体的设计和仿真，并对整体应用电路进行了仿真，结果均达到了预先设定的指标。

The mathematical relation formula is derived from the train running speed,distance and the output voltage frequency of tacho generator.

推导了列车运行速度、走行距离与测速发电机输出电压频率的数学关系式，给出了利用CMOS数字集成电路和频率合成原理实现上述关系的电路框图，并对其速度接口电路、轮径输入方法及频率合成电路、分频电路和BCD比例乘法器电路、显示电路、基准频率发生电路、电源电路等作了分析与说明。

Total circuit scheme and time sequence of tool design and implementation have been designed on the AIL logging characteristic. The design and analysis for circuit unit have been carry out on the several units such as main control circuit, signal phantom circuit, signal control circuit, amplifier circuit, A/D circuit, transmitter drive circuit and power circuit.

按照AIL的结构特点，进行了仪器总体设计，设计了仪器工作电路原理和工作时序，在此基础上，进行了主控制电路、信号幻像转换电路、信号控制电路、放大电路、A/D转换电路、发射驱动电路、电源电路等单元电路的分析和设计，从而完成了仪器单元电路的设计与实现。

Finally, took AT89S52 as the core, Designed contains the integration voltage-stabilizer circuit, the clock electric circuit, repositions the electric circuit, the liquid crystal display and the control circuit, ISP in-system programmable devices, the RS232 serial communication electric circuit in the system, the switching circuit, LED display circuit chip and the ISD2590 pronunciation chip recording/broadcast electric circuit and so on nine kind of periphery electric circuits, and compiles for the integrity schematic diagram.

最后，以AT89S52为核心，设计出包含集成稳压电路、时钟电路、复位电路、液晶显示与控制电路、ISP在系统可编程器、RS232串行通信电路、开关电路、发光二极管显示电路和ISD2560语音芯片的录音/播放电路等九种外围电路，并汇总为完整的原理图。

An image display apparatus includes a display having data holding function, a vertical drive circuit sequentially and selectively scanning matrix form display elements, and a horizontal drive circuit writing a voltage among binary voltage preliminarily assigned depending upon the digital data of the image signal. The horizontal drive circuit and the vertical drive circuit are operated for performing selective scan of respective display element for at least m times in one frame period. The vertical drive circuit is constituted of n number of sequence circuits and logic operation circuits for outputs of the sequence circuits, where n is smaller than m, a period from inputting to the sequence circuit to outputting from the final stage being less than or equal to half of one frame period, and at least one of the sequence circuits being used with selectively inputting a plurality of inputs.

提供了一种图象显示器，其具有显示部，在矩阵上排列的象素内保有数据保持的功能，根据保持的数据进行显示；垂直驱动电路，对构成显示部的矩阵状显示器以每行按顺序作选择性扫描；以及水平驱动电路，对于由垂直驱动电路选择的行显示器件，根据应显示的图象信号数字数据，从预先分配的二进制电压中写入电压，并利用水平、垂直驱动电路，与应显示的图象信号同步，在1帧期间至少m次对各显示象素进行选择性操作，以此进行多色调显示，垂直驱动电路由满足n＜m的n个顺序电路和其输出的逻辑运算电路组成，顺序电路的输入从最后级输出为止的期间为1帧期间的1/2以下，并且，n个顺序电路的至少一个的输入是切换多个输入系统而使用。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了