电源

By example analysis and experiment result compare,it introduces the usage and peculiarity of Multisim 2001 software platform of EDA technology in design type of experiment study on digital circuits,the advantages and disadvantages of EDA technology experimenthave been compared with actual operation,the important of combining"imitation experiment"and"material experiment"in design type of experiment of digit circuit teaching is put forward in this paper.

目前，国内高校的数字电路实验教学模式主要以2种方式进行：一种是完全采用常规的TTL逻辑器件(如逻辑门、触发器等中小规模集成电路)进行硬件连线测试，大多采用面包板或由多个双列直插座组成的各种实验箱。这种方式容易出现器件接触不良，接线不慎而烧坏芯片、电源等故障，学生实验课时得不到有效利用，影响对学生综合设计性实验能力的培养与提高。

According to the demand of high magnetic field power supply, reference is increased with a set ramp rate and stops at a set stable value, so reference system is composed of digital setting and digit to analog converting circuit. But the stability of reference is mostly guaranteed by the performance of D/A circuit, so D/A circuit is particularly studied in reference system. The scheme of D/A circuit, the selection of DAC and its voltage reference, hardware anti-jamming design and PCB design are discussed in detail, and software of remote control and PLC are discussed in brief. Zero-flux DC current transformer well satisfies the demands of the high stability of Load current detection unit, so the principle of zero-flux DC current transformer is analyzed; in the mean time a project which detects the long term stability is designed. During 8 hours, analog signal which is detected with high precision digit multimeter is recorded in computer at 1HZ frequency by GPIB communication. The drift error source and related parameters are explained in the compare-amplify part. Detailed subtraction circuit is designed; also amplifier chip and periphery components are selected and verified according to the theory of error analysis.

根据强磁场电源的需求，参考源应按照软件设定的斜率逐渐上升到设定稳态值，则参考源系统应由数字给定和数模转换电路两大部分组成，而参考源的稳定度主要依靠完成数模转换功能的模拟电路的性能来保证，因此本文对参考源系统的研究以数模转换电路为重点，分别从电路方案的确定、数模转换芯片及其基准电压源的选取和验证、电路板硬件抗干扰和PCB设计几方面进行了论述，然后对数字给定部分的远控组态和PLC程序设计作了简要介绍；采用零磁通原理的直流电流转换器很好地满足了对负载电流检测单元高稳定度的需求，本文详细分析了零磁通检测的原理，并在选定此种类型电流转换器的基础上设计了一套检测长期稳定度的方案，8小时内以1秒为采样周期，通过计算机Labview程序和高精度数字电压表的GPIB通讯，将被高精度数字电压表数字化后的模拟信号采样值连续记录至计算机中；比较放大环节简要阐述了漂移产生的原因和相关参数指标，确定了具体的减法电路形式，并根据误差分析理论对运算放大器和外围元器件进行了选取和验证。

With the rapid development of the information age, power equipment gradually develops in the direction of digit.

随着信息时代的飞速发展，电源设备也逐渐向数字化的方向发展。

So we can apply our knowledge of digital power and motion control to enhance their success.

因此 ，我们可以申请我们的数字电源和运动控制的知识，提高他们的成功。

The digital control system of the welding inverter based on DSP is designed in this paper.

本文在研究前人的经验成果的基础上，针对基于 DSP 的弧焊逆变电源的数字化控制系统进行了研究和设计。

Are mainly focused in the power management area, i.e. to make the computer,Digital camera, LCD monitor, cellular phone, battery etc.

我们的产品主要运用于电源管理的领域，例如电脑、数码相机、LCD液晶显示器，手机，电池等。

In US. Our products are mainly focused in the power management area, i.e. to make the computer, Digital camera, LCD monitor, cellular phone, battery etc.

我们的产品主要运用于电源管理的领域，例如电脑、数码相机、LCD液晶显示器，手机，电池等。

I was able to solder the power connector, capacitors, and diode in the fist part.

我能焊电源连接器，电容器，二极管，在拳头的一部分。

Direct Correspondence of Display Data RAM to LCD Pixel Display Data RAM2,500 bits LCD Drivers25-common and 100-segment Selectable Duty and Bias Ratio ; 1/25 Duty 1/6 Bias or 1/15 Duty 1/5 Bias Direct connection to 8-bit Microprocessor interface for both of 68 and 80 type MPU Serial Interface (SI, SCL, A0, CS) Useful instruction set Display ON/OFF, Display Start Line Set, Page Address Set, Column Address Set, Status Read, Write Display Data, Read Display Data, Normal or Inverse ON/OFF Set, Static Drive ON/Normal Display, EVR Register Set, Read Modify Write, End, Reset, Internal Power Supply ON/OFF, Driver Output ON/OFF, Power Save and ADC select.

直接显示数据RAM的对应像素液晶显示数据RAM2，500位液晶Drivers25，共同和100段可选择的职务和偏差率； 1 / 25的责任1 / 6的偏见或1 / 15的责任1 / 5偏见的直接连接至8位微处理器的接口为68和80型微控制器的串行接口（司，沙田至中环线时，A0，CS）的相关指令集显示开/关，显示开始行设置，页面地址设置，列地址设置，状态读取，写入显示数据，读取数据显示，正常或逆开/关设置，静态驱动器/正常显示，腔内注册设置，读取修改写入，完，复位，内部电源开/关，开/关，节能和ADC选择驱动器输出。

The primary users, he said, are large semiconductor companies that employ Esterel to design specific types of control IP, including blocks for power management, memory management and direct memory access.

他说主要的用户是大的半导体公司，它们用Esterel来设计特殊类型的控制IP，包括用于电源管理、存储器管理和直接存储器访问的模块。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。