驱动电路

The compensation current is then directly related to the primary current by the turns ratio of the primary winding to the compensation winding.

此方法的优点是不必使检测磁芯驱动至饱和（实际上不到600GS），对被测电路的干扰小，可以测量高精度的直流电流，并与被测电路隔离。

This system uses the deuterium lamp as its blazed lamp-house, and makes mechanical turnplate in use of modulating light signal with two frequencies, which is drived by in-phase electromotor with constant velocity. A potomultiplier tube is used to conversion optical signal to electric signal. Using Lock-In Amplifiers to realize magnifying the metrical signal using difference method with two different frequencies. We also analyze its principle of each part of the apparatus and design the realization circuits of each part. The data analysis and the in-phase electromotor control circuits are fulfilled by SCM; the single chip control systems hardware interface and software design are given.

该系统的光路部分使用氘灯作为激发光源，用同步电机恒速驱动的机械盘调制出双频光信号，利用一个光电倍增管进行光电信号转换；信号处理部分采用锁相放大器实现信号双频差分处理，分析了其各组成部分的原理，设计了各部分的具体实现电路；使用单片机进行数据差分处理和电机控制，给出了单片机控制处理系统的硬件接口电路和软件设计。

The main principle of the DCcontactor:The electromagnetism coil switches on electricity thetitle iron to match with the iron heart on,the suction of theelectromagnetism system overcomes the counterforce of the springarouses the action of the contact, the main electric circuitconnected;The electromagnetism coil cuts the power the counterforceof the spring arouses the title iron from move to open, the headcontact breaks to open the output electricity arc give or get anelectric shock in drive to arc-extinct-chamber and made longer,thestrong cooling dissociates and put out,the main electric circuitcuts off.

接触器的主要原理：电磁线圈通电，衔铁和铁心吸合，电磁系统的吸力克服弹簧的反作用力带动动触头与静触头接触，主电路接通；电磁线圈断电，弹簧的反作用力带动衔铁和动触头弹开，触头断开产生的电弧在灭弧室中受到磁吹灭弧和电动力驱动被拉长，并强烈冷却去游离而熄灭，主电路切断。

This paper introduces the realization method of a UWB antipodal modulation generator with LCR to be driven by H bridge circuit of high speed MOSFETS.

而用高速 MOSFET管构成的 H桥电路驱动大电流辐射天线可产生超宽带脉冲信号，并能完成信息的正反调制，对电路用 Pspice8。

This thesis is on the base of this system'hardware , explaining how to use the interrupt of a MUC,and the dynamic scan of seven-segment digital displayer and button-detecting and shake-eliminating.

本论文是基于此交通灯控制系统的硬件电路，讲述了单片机外围电路的连接，单片机 I/O 接口的使用，按键的连接与检测，数码管的扫描与驱动。

So the defocus quantity is calculated by detecting the image spot position offset and the front focus plane of the collimation lens can be adjusted on the first image of the theodolite.

该方法利用半反半透镜将准直物镜后的物光折转，采用双分离透镜将目标成像到CCD上，经视频驱动、放大电路、再经A/D转换后输入到微机进行图像信号处理，这样，通过检测像的偏移量求出离焦量的大小和方向，然后驱动调焦部件使准直镜的前焦点在经纬仪的第一像面上。

In this paper, the electric-drive equipment is simplified in order to obtain its working status by computer to dispose the sampling values. AutoCAD is used to draw the circuit diagram of the electric-drive equipment; the further development tool ObjectARX2000 is used to develop the interface program in order to drive the static circuit diagram; the microcontroller is used to sample and transfer the samples to the PC; the Visual Basic is used to construct all the real-time instruction system of the DFll diesel locomotives electric-drive equipment.

本文对东风11的电传动系统进行了适当的简化，使其电路工作状态通过计算机对电压采样值的处理得到确定；用AutoCAD绘制了整个东风11电传动系统的电路图；利用二次开发工具ObjectARX2000开发出接口程序，实现了对AutoCAD所绘制电传动电路图的驱动；用单片机实现了采集装置，并与PC机通讯完成对电路状态的采集；采用VB编程实现了整个东风11型机车的电传动实时教学系统。

. In contrast to simplex atomizers, which utilize high-pressure in the fuel circuit to drive the atomization process, pure-airblast atomizers use relatively low-pressure fuel along with high velocity air adjacent to the fuel film to drive the atomization process.

相反，单纯雾化，它利用高压燃料电路来驱动雾化过程中，纯粹的鼓风雾化使用相对较低的压力，随着燃料的高速空气毗邻电影燃料驱动雾化过程。

In the motor drive controller, current sampling cir- cuit protecting circuit, pressure adjusting circuit and signal insulating circuit are made up of DSP and its peripheral circuit. CPLD is employed to deal with the brushless DC motor＂ s rotor position signal in order to realize.

电机驱动控制器采用微控制芯片和外围电路构成了电流采样、过流保护、压力调节等电路，利用CPLD实现无刷直流电机的转子位置信号的逻辑换相。

Based on these, the single phase converter system is studied in detail, including the selection of the main circuit scheme, the formation of Sine-wave Pulse- width Modulation signal, the design of the drive and protection circuit of IGBT, and the design of high frequency transformer. Finally, the simulation software is employed to test the effect. And the result is satisfactory.

在此基础上，本文主要对电能质量控制稳定器所需的DC/AC控制电源进行了详细研究，包括主电路方案的选择、SPWM波的生成、IGBT的驱动和保护电路、高频变压器的设计以及闭环电压控制原理，最后进行了输出电压的计算机仿真分析，结果是令人满意的。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。