和电路

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。

Ultrasonic transducers, oscillatory source circuit, receiving signal disposal circuit, and an a/d chip formed the peripheral circuit of the real-time measurement system.

该实时测量系统的外围电路包括超声波传感器、发射器振荡电路、接收器信号处理电路和a/d芯片。

The design of high frequency conversion power adopting full bridge of IGBT whose driven circuit adopts M57962L module is presented in this paper. The working principle and simulation of this circuit is also analyzed in detail. This system is a basis for the research of smaller and smarter ozonizer power supply.

提出了一种主电路采用IGBT全桥结构，驱动电路采用M57962L模块，利用单片机控制技术的高频逆变电源的设计方法，同时对电路的工作原理作了分析与仿真，该电源系统为小型化和智能化臭氧发生器电源的研究提供了基础。

This paper designed a p re2amp lifying circuit system. The system was composed of p re2amp lifying circuit and filter circuit.

设计了OLED量子效率测试的前置放大电路系统，包括前置放大电路和带通滤波电路两个部分。

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。

The selection of the AU6802N1 which is the digital transforming chip of the resolver and its parameters are mainly introduced.

重点介绍了旋转变压器数字转换芯片AU6802N1及其相关参数的选择，并设计了外围电路、检测电路和DSP接口电路。

The analysis of the weak signal circuit, amplifying circuit of the signal and power circuit in the thermal conductivity detector has been done, and the characteristic of the circuits with the rhenium tungsten filament is designed.

针对气相色谱热导检测器的弱信号失真和电源不稳定问题，研究与设计热导检测器的弱信号测量电路、信号放大电路以及电源电路。

The open design methods, user-friendly according to our own needs, for various extensions, and includes common interfaces. mainly covers the right ring tone detection circuit design, automatic Abstract hook, Transceivers serial communication theory, AT89C51 control circuit characteristics of the structure and principle C language of communication microcontroller programming software design; Due to the communication process interference factors exist, Therefore, the circuit design using the interference method.

采用开放式的设计方法，便于用户根据自身需求，进行各种扩展，包含常用接口，主要包括对振铃音的检测电路的设计，自动摘挂机，收发器串行通信的设计，控制电路AT89C51单片机和固态继电器，用C语言实现单片机下的软件编程，由于考虑到通信过程中存在干扰因素，所以对电路采用抗干扰设计的方法。

The circuit utilizes charge redistribution technique and consists of analog function blocks such as operational amplifier with feedback, sample and hold circuit and logic discrimination circuit, etc.

该混沌函数以电压作为迭代变量，电路采用了负反馈形式的运放、采样保持电路和逻辑判断电路等模块，并运用了电荷再分配技术。

A charge pump phase locked loop based on self biased technique is presented. In this technique, the operating bias levels are essentially established by the operating frequency of the voltage controlled oscillator, namely, all bias voltages and currents are determined by VCO controlling voltage. Thus, a fixed damping factor and a fixed ratio of the bandwidth to operating frequency are obtained, which are defined by th...

给出了基于自偏置技术的电荷泵锁相环电路，压控振荡器的工作频率动态地建立了电路内部所有的偏置电压和电流，从而实现了固定衰减因子，固定环路带宽与工作频率之比，这二者由电容的比率决定，极大地实现了电路设计的工艺无关性，同时也得到了小的相位抖动，最后，对这种锁相环的稳定性进行了一定的分析。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。