及电路

This text has done a summary to PSD first , then introduce the structure , operation principle and characteristic of PSD, PSD position sensor experimental provision and measuring the circuit, study size , to enlarge size , mid point position of coefficient choose measurement range , sensitivity , non-linear influence of error in PSD circuit of luminous point emphatically.

本文先对PSD做了一个概述，然后介绍了PSD的结构、工作原理及特性，PSD位置传感器实验装置及检测电路，着重研究了光点的大小、电路的放大系数的大小、中点位置的选取对PSD的测量范围、灵敏度、非线性误差的影响。

The structure and the operating principle of a three-phase power phase se-quence and open phase detecting circuit is presented in this paper.

介绍了一种三相电源相序及断相自动检测电路的构成及工作原理，实践证明该电路是可行的。

Further, we describe the origin of Crystal Oscillator's phase noise and phase jitter, also list a variety of its contributors. Secondly, we make an in-depth study and analysis in allusion to the given oscillatory circuit-Butler common base harmonic circuit.

然后针对特定的振荡电路结构-串联型巴特勒共基振荡电路-进行深入的研究和分析，并对主振电路中主要的噪声源-三极管进行的深入分析，包括激励对三极管及晶体的影响。

This paper gives a detailed analysis of the amplifying harmonic power devices, including the topological graph of the main circuit, the choice of parametrics, the design of the drive and protection circuit with its notice, the design of the control circuit, etc.

介绍了其工作原理，并对谐波功率放大装置做了重点研究，包括主电路的拓扑图设计及元器件参数选择，驱动和保护电路的设计和注意事项，以及控制电路设计等，并对整个谐波抑制装置的性能特点做了总结。

The main part of the hardware designs are about communication circuit design and Reset circuit design of the sink node, processor and power supply unit design of the field node.

硬件设计主要包括网关节点的有线通信电路及复位电路的设计、现场节点的处理器单元和电源单元设计，以及射频电路的设计。

Secondly, the paper introduced how to implement safety detection by ultrasonic sensor, and presented systemically all the design of collecting and processing signals, storage circuit, lithium battery charging and discharging circuit, data communication circuit, keypads and LCD. This paper studied the code of uC/OS-II and introduced how to port uC/OS-II onto LPC2214. The Real-Time Kernel uC/OS-II is a highly portable, ROMable, very scalable, preemptive real-time, multitasking kernel for microprocessors and microcontroller.

然后论文具体介绍了如何实现超声波传感器进行实时安全监测，并系统的介绍了超声波监测系统的信号采集，处理，存储电路，锂电池充放电控制电路，数据通讯电路，键盘，显示器等的设计；也详细的介绍了多任务操作系统uC/OS-II的源代码及如何在LPC2214上移植等。uC/OS-II是一个移植方便的、可固化的、可裁剪的、占先的多任务实时内核。

Circuit simulation and chip testing results show that when the LED driving current is 350 mA and the power supply is 6 V with ±10% variation, the stability of the output constant current of the accurate proportional current sampling mode LED driving IC will show 41% improvement over that of a traditional proportional current sampling mode LED driving IC.

经电路仿真及流片测试，表明当LED驱动电流为350mA，电源电压6V并正负波动10%时，改进的精密比例采样模式LED驱动电路比传统比例采样模式LED驱动电路的恒流特性稳定度提高了41%。

This paper presents the work principle and the design of the high-speed water jet loom and the design process of the control system,including the dardware and the software,and how to protract the circuit principle fig and PCB.

本文主要介绍了高速喷水织布机的工作原理及设计要求，叙述了喷水织布机控制系统的设计过程，包括硬件电路和软件编程，以及用Protel DXP软件绘制电路原理图和PCB图的方法及步骤。

In this paper, the design of a simple, low-cost walkie-talkie circuit and main circuit of the key components of the circuit is introduced

本文设计了一种简易、低成本的对讲机电路，对关键电路及主要的电路元件做了介绍。

The novel UHV-FTRTPS is composed of uncontrolled rectifier, H bridge inverter, step-up transformer and series resonant circuit.

整个装置由不可控整流电路、H桥逆变电路、升压变压器及串联谐振电路组成。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。