电路

According to I2C and USB electrical Specification the performance specifications of transceiver are defined.

重点优化设计与实现了各个电路模块，不但保证了电路的性能，而且有效地减小了芯片面积。

The tendency of chemical elements with similar positions in the periodic table to have similar properties.

一种提供周期性信号的电路，用于控制和同步其它电路。

And, this paper is focus on studying the significance of Petri net in asynchronous circuit and designing asynchronous circuit based on STG and Petrify.

并且主要研究Petri网在异步电路设计中的重要意义，研究基于信号转移图(Signal Transition Graphs，STG)与Petrify的异步电路设计。

Compared to the ordinary PLL circuits, it can endure the short time appearance that occurs once in a horizontal line of the sync signal. It can adapt to the phase alternation character of a PAL video signal and recognize the phase alternation line. The local color sub-carrier can be generated for synchronous demodulation by the circuit.

该电路使用了全数字锁相环对色同步信号进行跟踪，与普通锁相环电路相比，它不仅能适应制视频信号中色同步信号每行出现一次和PAL制信号逐行倒相的特性，还能识别倒相开关信号，准确地产生本地色副载波用于同步解调。

Synchronous signal integral with the phase shift signal,and has the ability of resisting synchronous signal high frequency interference and wave distortion.

它是利用同步信号送入专用集成触发电路TCA785，经过同步过零，放电监控，同步寄存器，控制比较，脉冲形成与分配，最后触发可控硅电路。

A new way of distance measurement is introduced in this paper, it is similar to traditional measurement way, and has its origination. In the new measurement way, the rough measurement of the distance is realized by countering high frequency pulses filled in discriminable phase pulses. Discriminable phase pulses go through integral circuits, and then are sampled by Analogue Digital Converter, so the accurate measurement of the system is obtained by the sampling value.

本文提出了一种新的测距方法，该方法与常规相位测距仪比较，既有相似之处也有其创新之处，常规相位测距仪一般使用多波长测尺频率组合、差频数字测相的方法，本系统虽然也采用多波长测尺频率组合，但并不采用差频数字测相，该方法摒弃了传统的内外光路的切换方式及电路的混频，粗测采用对鉴相脉冲填充高频脉冲的办法实现，精测则利用鉴相脉冲对积分电路进行积分，然后由ADC 对积分电平进行转换，通过对ADC 的输出值的计算处理实现精测。

7 To 3.3 V operating supply voltage 44.1 kHz sampling frequency 16.9344 MHz (384fs) system clock Built-in crystal oscillator circuit 16-bit, MSB rst, rear-packed serial data input format ( 64 fs bit clock) 8-times oversampling digital lter · 32 dB stopband attenuation ·+0.05 to -0.05 dB passband ripple Deemphasis lter operation · 36 dB stopband attenuation ·-0.09 to +0.23 dB deviation from ideal deem- phasis lter characteristics Attenuator · 7-bit attenuator (128 steps) set by microcontrol- ler Soft mute function set by parallel setting ·(approximately 1024/fs total muting time) Mono setting · Left or right channel mono selectable by micro- controller Built-in innity-zero detection circuit , two-channel D/A converter · 3rd-order noise shaper · 32fs oversampling Built-in 3rd-order post-converter low-pass lters 24-pin VSOP package Molybdenum-gate CMOS process

2.7至3.3 V工作电源电压为44.1千赫的采样频率16.9344兆赫（384fs）系统时钟内置晶体振荡器电路的16位，MSB在前，后包装的串行数据输入格式（64飞秒位时钟）8倍超采样数字滤波器·32分贝的阻带衰减·+0.05至-0.05分贝通带纹波去加重滤波器的运作·36 dB抑制频宽衰减·-0.09到0.23 dB的偏差认为不理想，症状困扰评估滤波特性衰减器·7位衰减器（128级）集由单片机在-莱尔软静音功能的平行设置·（共约1024/fs静音时间）单声道设置·左或右声道单声道微控制器可选的内置的无限零检测电路Δ，两通道的D / A转换器·第三阶噪声整形·32fs过采样内置三阶后转换器的低通滤波器24引脚VSOP封装钼栅CMOS工艺

It is shown as a photocell amplifier in the following section.

运算放大器使用指南电流——电压转换电路的用途不限于电流的测量上，还可以用在例如后面的光电池放大电路中。

The present paper presented in detail circuit design and operation principle of each component in the temperature monitoring system. In the light of the analysis of probe power losses, the probe driven by silicon photoelectric cell worked in high-voltage area.

论文中详细介绍了温度监测系统各部分的电路设计及工作原理，并在对探头电路功耗分析的基础上，实现了硅光电池推动探头在高压区工作。

The operating principle and hardware configuration of the instrument based on AT89C51 for testing breakdown voltage of the dielectric oil is introduced. The method to collect the breakout current through photoelectric isolation is proved when the dielectric oil was broken out. The question about the system work stability in the condition of strive electromagnetism interfere is proposed.

介绍了 AT89C5 1单片机控制的绝缘油耐压测试仪的工作原理及硬件结构，探讨了在绝缘油击穿时，通过光电隔离采集击穿电流的方法，解决了在高压击穿瞬间和强电磁场干扰环境下，微机电路实行有效复位并使系统稳定工作的问题，给出了基于 MAX70 6为核心的高可靠复位电路的实现方法。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。