电源

The main controller compatible with DS87C550 and P87C552, implements the functions of system resource management and task schedule. The communicatory part, which expands the serial interfaces by TL16C554, implements the communication among the main controller, the remote communication terminal and the field devices. The interface part implements isolation between field devices and monitoring terminal with photoelectric coupling; Solar battery supplies power for the monitoring terminal.

主控部分兼容DS87C550和P87C552两种MCU，实现了系统资源的管理与任务调度；通讯部分采用TL16C554扩展了多个串口，实现了主控部分与远程通信终端及智能仪器之间的通信；接口部分采用光电耦合技术实现了现场设备与监控终端之间的电气隔离；采用太阳能供电技术为监控终端提供了电源。

With the development of network and Community antenna television, and the popularization of Subscription Television, it is becoming so important to provide Uninterruptable Power Supply for them,and we need more and more wire network special power supply.

随着我国网络通信、有线电视的发展及收费电视的普遍，保证这些设备的不间断供电就显得意义重大，所需的有线网络专用电源日益增多。

The direct current is steady to press the power supply general from power transformer commutate the an electric circuit and steady press the electric circuit constitute.

引言 当今社会人们极大的享受着电子设备带来的便利，但是任何电子设备都有一个共同的电路--电源电路。

For the design of the power circuit frame, the in-series resistance plan is applied in commutate circuit to restrain the voltage pulse caused by rising arc; while the parallel connection switch is adopted in inverted circuit to guarantee the reliability of the power at work.

在主电路拓扑设计中，整流电路采用了串联降压电阻的方法来抑制起弧时的电压脉冲；逆变电路采用了双并联开关组方案，以进一步提高电源工作的可靠性。

High-voltage ; switching supply ; transformer ; commutate

高压； 开关电源；变压器；整流

The complexity of hardware configuration and the problem of error compensation of lead wire were avoided.

系统采用DS18820-PAR单总线工作方式和无需内部单独供电的寄生电源供电工作方式，解决了传统的测温系统硬件结构复杂、测温系统中的引线误差补偿问题。

Products with high efficiency, high reliability and complete automatic protection function of circuit and electromagnetic interference, electromagnetic radiation of small, to provide users with high-quality power supply.

产品以高效率、高可靠性和完备的电路自动保护功能和电磁干扰、电磁辐射小，为用户提供高品质电源。

Each kinds of specification intermediate frequency, high frequency, ultrasonic frequency power source, the many kinds of forms smelting, induction heating complete set of equipment, use in the back, nonferrous metal, alloy material smelting, forging and heat treatment.

产品/Product：各种规格的中频、高频、超音频电源、多种形式的熔炼、感应加热成套，用于黑色，有色金属，合金材料的熔炼、锻造及热处理。

Products used the advanced semiconductor technology, with theimport of original power supply and other key core components, effectively improve the overall performance of the product to ensure products' amplified speed, extend life, and protect the reliability of analysis results in harsh and complex environments Under the experiment.

产品采用国内外先进的半导体技术，配合进口原装大功率电源及其他主要核心部件，有效提高了产品的综合性能，保证了产品的扩增速度，延长仪器使用寿命，并且在更加复杂苛刻的环境下进行实验，也能保障分析结果和系统的可靠性。

Products used the most advanced semiconductor technology, with theimport of original power supply and other key core components, effectively improve the overall performance of the product to ensure products' amplified speed, extend life, and protect the reliability of analysis results in harsh and complex environments Under the experiment .

产品采用国内外最先进的半导体技术，配合进口原装大功率电源及其他主要核心部件，有效提高了产品的综合性能，保证了产品的扩增速度，延长仪器使用寿命，并且在更加复杂苛刻的环境下进行实验，也能保障分析结果和系统的可靠性。

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。