电源组

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。

The sub-node of wireless control is connected at a derailer at the side of the rail.

它是由一组传感器模块、无线传输模块、电源模块和工业控制计算机组成，无线传输模块包括无线收发汇聚节点、无线收发子节点和无线控制子节点，传感器模块连接无线收发子节点并通过传感器安装夹具安装在铁轨上，无线控制子节点连接设置在铁轨旁的脱轨器，无线收发汇聚节点连接工业控制计算机。

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。

Intelligent battery discharger is the instrument that can maintain and capacity test to battery, DC power and UPS backup battery .

智能蓄电池放电仪是专门对蓄电池组、直流电源、UPS后备电池进行维护及容量检测的仪器。

When the power supply operates under standby mode, a Fly-back converter is used to provide standby power (5V/1.5A).

当电源模组在待机态时，使用返驰式转换器提供5V/1.5A 待机电源。

L Test function: loading capacity test of AC, discharge test of battery and the test of DC.

l 检测功能：交流电源的带载能力测试，蓄电池组的放电检测及直流电源的检测。

Overcharge of single battery is suppressed via limiting its charge cut-off voltage, and overdischarge of battery pack is prohibited by means of controlling the voltage of single battery and the application of power switch.

提出铅酸蓄电池组的电源管理设想，通过有效的限制单体充电终了电压防止单体蓄电池的过充电，通过单体电压检测和功率开关防止铅酸蓄电池组的过放电。

The different multi-fold of frequency can be controlled by adjusting input frequency and voltage, and then we use the MOBLE theory to achieve 2 of Defferent comparators,the Defferent comparators of the traditional theory needs double power supply, we makes it running by one.

接著我们利用MOBILE理论去实现两组差动比较器，传统论文中的差动比较器需要双电源，我们实现了只需要单电源的差动比较器。

I am the company's sales of the products are: multiple programmable electronic load machine (SM-268ATE, SM-5500ATE + PC), single-group e-load machine, ROHS environmental tester, X-ray fluorescence analysis LAU, the power of digital, analog, digital oscilloscope, power analyzer PM100/300, DC power supplies, power inverter, high-pressure machine, ground resistance tester, LCR, chargers tester, battery charging and discharging tester, resistors, electronic Burn rack, automatic switching from PIN about testing a dual-governance (SM-2200DE), and other products.

目前我公司的销售的产品有：多组可程式电子负载机(SM-268ATE，SM-5500ATE+PC)，单组电子负载机，ROHS环保测试仪，X射线萤光分析仪，数位功率计，类比，数位示波器，电力分析仪PM100/300，直流电源供应器，变频电源，高压机，接地电阻测试仪，L.C.R，充电器测试仪，电池充放电测试仪，电阻，电子烧机架，自动脱PIN左右切换测试双治具(SM-2200DE)等产品。

Main Products: ABBA linear guide, ABBA ball screw, HIWIN linear guide, HIWIN Ball Screw, THK linear guide / Ball Screw, XINHAN linear optical axis, IKO, THK, KMC linear bearings, NSB stainless steel linear bearings , APEX planetary reducer, a dedicated servo reducer, Japan Miki non-excited brake, clutch gear, special-purpose power / stepless speed regulation device Miki / Miki brakes, clutch and group body Miki dedicated servo coupling / engineering machinery dedicated joint coupling, ATLANTA worm gear reducer and a dedicated connection element, high-precision gear shaft, ATLANTA high-precision gears, ATLANTA rack and the rack and a straight body slide group, HSK screw support blocks, NOK seals, SAKACAMI seals, NAK seals, Taiwan gold cylinder, solenoid valve, gas control valve, mechanical valve, manual valves, pneumatic components, precision implementation of components and accessories, imported bearings such as NSK, SKF, INA; FAG; RHB; TIMKEN, etc..

主营产品：ABBA直线导轨、ABBA滚珠丝杆、HIWIN直线导轨、HIWIN滚珠丝杠、THK直线导轨/滚珠丝杠、XINHAN直线光轴、IKO、THK、KMC直线轴承、NSB不锈钢直线轴承、APEX行星减速机、伺服專用減速机、日本三木无励磁刹车、齿式离合器、专用电源/三木无级调速器/三木刹车、离合器及组体、三木伺服专用联轴器/工程机械专用联轴器、ATLANTA蜗轮蜗杆减速机及专用联接元、高精度齿轮轴、ATLANTA高精度齿轮、ATLANTA齿条及齿条与直线滑轨组体、HSK螺杆支撑座、NOK密封件、SAKACAMI密封件、NAK密封件、台湾金器气缸、电磁阀、气控阀、机械阀、手控阀、气动元件、精密执行元件及附件、进口轴承如NSK，SKF、INA；FAG；RHB；TIMKEN等。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！