和电路

The debugging and simulation of sphygmograph circuit are carried based on Electronic Workbench.

利用电子工作平台对电子脉搏测量仪电路进行了调试和仿真，仿真结果表明：该电路设计达到了预期效果，证明了电路设计的合理性。

Because of the great effect of the stray capacitance and stray inductance under the high frequency, both the analysis methods and design applications of the high frequency show different from the one of low frequency circuit.

在高频条件下，杂散电容和杂散电感对电路的影响非常大，所以射频电路无论是分析方法还是设计应用都与低频电路存在很大的不同。

Design DC/DC circuit using converter module. At last we give the accurate circuit using TL1451 and give the important testpoint's waveform.in term of the frame of the digital camera.

论文最后根据数码相机驱动电路的机构，设计出由具体芯片构成显示驱动电路和详细分析了所设计驱动电路的工作原理。

Adopting discrete time-domain method to set up the mathematical model of high-voltage conversion circuit, and analyzing the influence of frequency, duty cycle, primary inductance, different turns ratio parameters how to affect high-voltage convertion circuit charging time.

采用离散时域方法建立高压转换电路数学模型，分析了高压转换电路频率、占空比、原边电感量以及匝比等设计参数对高压转换电路充电时间的影响，并进行了仿真和实验验证。

Elect hardware, and design current to voltage translation circuit, voltage amplification circuit and acoustic-optic alarming circuit.

对硬件进行了选择，对电流/电压转换电路？电压放大电路和声光报警电路进行了具体设计？

Mainly by the design of infrared sensors, signal amplification circuit, voltage comparator, delay circuit and the audio alarm circuit.

本设计主要由红外线传感器，信号放大电路，电压比较器，延时电路和音响报警电路组成。

First of all, the circuit output waveform in the case of losing it by measuring the input voltage and output voltage in order to detect amplification of analog circuits, and then by adjusting the frequency of AC voltage source to reduce the output gain make 3db analog circuits in order to measure the maximum cut-off frequency, pass band can be obtained.

本电路首先在输出波形不失真的情况下通过测量输入电压和输出电压从而测出模拟电路的放大倍数，然后通过调节交流电压源的频率使得输出增益减少3db从而测量出模拟电路的上限截止频率，即可求出通频带。

Circuit system used varistor constitute the Wheatstone bridge to collect small changes in voltage, After amplification circuit amplified into A / D converter circuit, the input voltage digital signal after the conversion output AT89S52 conducted by the control and data processing and results in the LCD display.

系统电路采用压敏电阻构成惠斯登电桥来采集电压的微小变化，经过放大电路放大后送入A/D转换电路，对输入电压信号进行数字量的转换后输出，由AT89S52进行系统的控制和对数据的处理并将结果显示在液晶显示器上。

Based on introduction of the development for camera module used in mobile, the framework of SMIA was described, including its functionality, structure and electrical interface, emphatically on the compact camera port2.0 (CCP2.0) and the cameral control interface.Major circuit was implemented in design, using 0.18 um technology of smic. The transmitter can work at 650 MHz steadily,and digital circuit contains about 3 k gates.

在介绍了手机照相模块发展的基础上，描述了标准移动图像处理体系结构的总体架构，包括照相模块的功能、结构设计、电气特性等，尤其对密集型照相端口（CCP2.0）和照相控制端口作了详细的阐述，并实现了具体的电路设计，采用smic 0.18 um工艺，数据传输电路可以稳定地工作在650 MHz，数字电路部分约为3 k门。

The effects of matching circuit on resonant frequency and vibrational charac- teristics of piezoelectric ultrasonic transducers were studied.

研究了匹配电路对压电超声换能器共振频率及其振动特性的影响；分析了由匹配电路和换能器组成的能量传输系统的有效机电耦合系数与匹配电路参数之间的关系。

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。