电源

ABSTRACT: With the development of the times, digital electronic technology has been popular in all of our lives, work, research, and all fields. This paper introduces a NC DC power supply, the power consists of analogue power supply, display circuit, control circuit, digital-to-analog converter and circuit amplifier.

随着时代的发展，数字电子技术已经普及到我们生活，工作，科研，各个领域，本文将介绍一种数控稳压电源，本电源由模拟电源、显示电路、控制电路、数模转换电路、放大电路五部分组成。

ABSTRACT: With the development of the times, digital electronictechnology has been popular in all of our lives, work, research,and all fields. This paper introduces a NC DC power supply, thepower consists of analogue power supply, display circuit, controlcircuit, digital-to-analog converter and circuit amplifier.

随着时代的发展，数字电子技术已经普及到我们生活，工作，科研，各个领域，本文将介绍一种数控稳压电源，本电源由模拟电源、显示电路、控制电路、数模转换电路、放大电路五部分组成。

This paper introduces a NC DC power supply, the power consists of analogue power supply, display circuit, control circuit, digital-to-analog converter and circuit amplifier.

模拟电源提供各个芯片电源、数码管、放大器所需电压；显示电路用于显示电源输出电压的大小。

According to the national standards ,our factory produces all series of Control transformers（DK、BK、BKC、JBK、RBK ）, Silicon rectifying equipment,Mains transformer, Commute transformer, Reactor , Regulator , Autotransformer and Three-phase dry-type transformer, which are used in the operation of industrial equipment, mechanical equipment and computer equipment.

按照国家标准，专业生产各系列（DK、BK、BKC、JBK、RBK）控制变压器、可控硅整流设备、电源变压器、整流变压器、电抗器、稳压电源、自耦变压器、单相干式隔离变压器，开关电源，为工业控制设备、数控设备、机械控制设备、游戏娱乐设备、航海机械设备、电镀设备及计算机控制设备等配套使用。

Though the present switching power supply has been already much lighter and handier than the early linear power supply. But the switching power supply interior still contains a lot of control functions and each control circuit needs some external passive devices, so it still has certain volume and weight. If we combine all the control circuits and the passive devices with whole combo control IC, it will efficiently reduce the volume and weight of the power supply, and the manufacturing cost of the products can be reduced, too.

中文摘要虽然目前的交换式电源供应器已经比早期的线性式电源供应器轻巧许多，但是交换式电源供应器内部仍然含有许多的控制功能，以及各个控制电路所需要的外加被动元件，因此仍具有一定的体积与重量；若是将这些控制电路以及被动元件皆整合成为一个复合式控制晶片，将使得电源供应器的体积与重量能够有效的缩减，同时产品的制造成本也能降低。

The invention comprises the following steps: the user of the mobile communication terminal setting the power save mode, selecting the subdistrict search time and opening the holding period of the power source, judging and counting the exceeding time that the subdistrict power falling under the reference value according to the saved subdistrict search time, operating the power save mode, closing the working power source supplied by the battery and driving the timer with the minimum working power source if exceeding the saved subdistrict search time; opening the working power source, searching the subdistrict and maintaining the calling standby state if the overtiming.

包括步骤：移动通信终端的用户设置节电模式，选择小区搜索次数和打开电源的保存时间，以保存的小区搜索次数为根据，判断计数小区功率降到基准值以下的超过次数，如果超过上述保存的小区搜索次数，则运行节电模式，关闭电池供应的工作电源，以最小工作电源驱动定时器计时；比较判断结果是时间已超过时，打开工作电源，搜索小区，同时保持通话待机状态。

The fluid moving device may also be provided with a self-sealing power switch for activating and deactivating the fluid moving device, wherein the self-sealing power switch includes self-sealing structure that seals the intake port when the power switch is in a deactivated position, and that unseals the intake port when the self-sealing power switch is not in the deactivated position.

这种流体移动装置还可以配备自动密封的电源开关以便起动和关闭该流体移动装置，其中自动密封的电源开关包括在电源开关处于关闭位置时密封流体入口而在自动密封的电源开关不处于关闭位置时不密封流体入口的自动密封结构。

To improve the stability of Arcjet discharge plasma in low current and high voltage mode, research on the demand of output characteristics of Arcjet Power Conditioning Unit was conducted. In this paper, based on PWM invertors and current mode control, using MOSFET as the main power device, an Arcjet Power Conditioning Unit was developed. Through adding a closed loop feedback circuit of output voltage, it can make the output characteristics of PCU be positive resistance to ensure the stability of Arcjet discharge plasma. The experiment indicates that this PCU can make Arcjet engine work at high voltage mode (100 V, 10 A) and ensure the stability of arcjet discharge plasma. Finally, it provides the experimental data of Arcjet when working.

为了解决小电流、高电压下电弧火箭等离子体的稳定性问题，研究了电弧火箭发动机对电源调理单元的输出特性要求，基于逆变电源脉宽调制技术与峰值电流型控制原理，以MOSFET为主功率器件，研制了一台电弧火箭电源调理单元，给出了Arcjet工作时的实验数据，通过增加PCU输出电压的闭环反馈电路，可以使PCU的输出外特性呈现正阻性，保证电弧的稳定燃烧，实验结果表明，该电源调理单元能使电弧火箭发动机达到高电压工作模式(100V， 10A)，保持电弧工作的稳定性。

Based on these design guides, the analysis and design of a low phase noise and low power dissipation, with 0. 18μm CMOS process, integrated Colpitts crystal oscillator with automatic gain controlled feedback loop as the amplitude-limiting technique, low dropout voltage regulation with band gap reference voltage and frequency tuning monotonicity guaranteed by digitally controlled variable capacitor array is performed to revise influence caused by process, voltage and temperature conditions for. handset. The oscillation with very stable amplitude value and frequency value is achieved.

它利用对工作温度、电源电压和制造工艺不敏感的带隙基准源和在集成电路中元件特性之间匹配好的优点产生了一个不随温度、电源和工艺改变而且可以跟踪工艺变化的参考基准电压，同时通过自动频率控制环路利用数字电路控制可变电容阵列控制瞬态频率稳定度，校正温度、电源和工艺改变对频率的影响，从而可以在很宽的电源电压范围(2.7v—3.7v)和温度范围(-40℃—125℃)以及CMOS工艺参数变化(TT、FF、SS、SF、FS)的条件下提供幅度稳定、频率稳定的振荡输出信号。

The objective of the present study was to recover silver and remove cyanide from silver-plating wastewater using the novel pulse-electrolysis technique.

利用脉冲电源从含氰含银电镀废水中回收银和去除氰，对比了脉冲电源与直流电源对含氰镀银废水的处理效果，系统研究了脉冲电源的电解电压、占空比和脉冲频率等参数对电能消耗、银回收率和除氰率的影响。

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。