查询词典 circuit

The whole PWM circuit contains two subcircuit, the front-end is PWM module that make up of the counter that based on nine MOSFET True-Single-Phase-Clock D flip-flop; the back-end is demodulated module, which is consist of a three order Chebyshev low-pass filter used trans-conductor capacitor. All the subcircuits are simulated. At last, an approving simulated result of the whole circuit is given too.

在调制部分，利用九管单相时钟D触发器构成计数器，并由此组成了脉冲宽度调制电路，同时给出了在典型温度下的仿真结果；在解调部分，介绍了低通滤波器从无源到有源的设计方法，设计了三阶切比雪夫低通跨导电容滤波器，同样给出了相应的仿真结果；最后，作为将脉冲宽度调制电路和滤波器作为整体电路，以脉冲调频波为输入进行了仿真，取得了令人满意的结果。

Based on the characteristics of the chip we designed to control the hydraulic servo system for the core of this system, control circuit valve using digital potentiometer, through programming, automatic regulation resistance, high AD698 and accurately by an LVDT valve mechanical displacements converted single polarity dc voltage, through the simulation, the design of PID algorithm of closing valves, the degree of control system and superordination machine, realize the valve control circuit of adjustment and control.

基于上述特点我们设计了以单片机为控制核心的液压伺服阀控制电路，本系统采用数字电位器，通过编程自动调节电阻值，采用AD698 与LVDT 配合，高精确地将阀门的机械位移转换成单极性直流电压，通过模拟PID调节算法，设计实现了对阀门开合程度的控制，该系统与上位机进行通信，实现对阀门控制电路的调试及监控。

By thorough analysis and synthetize this paper made a frame of the System of Intelligent Instrument and its hardware structure. As followed, this paper depicted design details of Intelligent Instrument "s hardware, it included the design of interface circuit, data commutations and digital logic of DSP, MCU, Internet"s chip and ISPs apparatus etc., and have designed schematic map and circuit. So it accomplished the full design of hardware/software of the New Type Intelligent Instrument.

本文具体给出了新型智能仪器硬件结构及实现，描述了智能仪器硬件设计细节，包括数字信号处理器、单片机、Internet接入芯片、可编程数字/模拟器件等在新型智能仪器中的接口电路设计、数据通信设计和数字逻辑设计等，详细地给出了设计原理图和电路图；给出了新型智能仪器的软件设计细节，从而完成了新型智能仪器完整的软硬件设计。

A complete set of circuit system of the working and controlling ink jet printing is suggested, the charcteristics and requirements of the circuit are theorically analysed.

建立了整套的喷墨打印控制和工作电路系统，对喷墨打印的特殊电路进行了严密的理论分析。

The invention also provides the device composed of the corresponding thermometric component, the data transmitting wires, the data collecting circuit assembly, the data converting circuit and the computer.

本发明相应的提出了一个由测温元件、数据传输线、数据采集电路组件、数据转换电路和计算机组成的装置。

Then, aiming at harmonic current problem of single-phase circuit, I predigest the triphase instantaneous harmonic and reactive power theory to be used in detecting harmonic current of single-phase circuit.

然后，针对单相电路中的谐波电流问题，对三相的瞬时无功功率理论进行简化，使其应用于单相的谐波电流检测当中。

The paper presents analysis and design methods of sequential logical circuit to make reader under-stand principles of the basic trigger,master—slave trigger and the edge tripple based on knowing the combina-tional logical circuit design.

摘 要：介绍了时序逻辑电路的分析和设计方法，使读者在了解了组合逻辑电路设计的基础上，了解基本触发器、主从触发器和边沿触发器原理，能够分析、设计以触发器为核心元件，且与电路初态有关的时序逻辑电路。

The system makes use of cooperation of artificial circuit and digital circuit to produce tristate neural stimulating signal and achieve signal collec-tion and LCD screen real time display of stimulating .

利用模拟电路和数字电路配合产生了三态的神经刺激信号。基于DSP控制成功的实现了信号采集和刺激的液晶屏实时显示。

The switching power amplifier is optimized based on the achievement of electromagnetic force, and the circuit structure of tristate power amplifier with soft-switching is designed. This circuit owns the advantages of reducing the dissipationpower on the power component and improving the speed of system dynamic response, enhancing the stability of the electromagnetic force in the final state, and the nice result is presented by the simulation. The small-signal model of the power amplifier is also established.

在实现支撑所需的电磁力基础上，对开关功率放大器电路进行了优化设计，采用三电平软开关的电路结构，以降低主功率器件的功耗、提高系统的动态响应速度、提高稳态电磁力的平稳性；仿真分析表明可以达到预期的效果；最后还建立了功率放大器的小信号模型，为控制系统的调节器设计提供了依据。

This compensation circuit can make the stability of the LDO linear regulator undependent on the effect of load capacitor's equivalent serial resistance, and it also makes the unit gain frequency bandwidth change slightly when the load is varying, thus greatly improving the performance of transient response, Furthermore, on the basis of dynamic frequency compensation, an overcurrent protection circuit is designed.

文章针对LDO稳定性的问题，提出了一种内部动态频率补偿电路，使LDO线性稳压器的稳定性不受负载电容的等效串联电阻的影响，其单位增益带宽也不随负载电流变化而改变，大大提高了瞬态响应特性；采用Hynix 0.5μm CMOS工艺模型对电路进行仿真；此外，该电路在实现动态频率补偿的基础上又加入了系统的过流保护功能，当负载电流大于限制电流时，LDO不能正常工作；当负载电流小于限制电流时，又自动恢复到正常工作状态。

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。