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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。

Parameter RESOLUTION Offset Error Gain Error Differential Nonlinearity Integral Nonlinearity TEMPERATURE DRIFT Offset Error Gain Error POWER SUPPLY REJECTION RATIO ANALOG INPUTS1 Differential Input Voltage Range Differential Input Resistance Differential Input Capacitance Input Bandwidth VSWR 2 POWER SUPPLY 3 Supply Current IAVCC (AVCC = 5.0 V) IEVCC (EVCC = 3.3 V) IVDD (VDD = 3.3 V) Total Power Dissipation 4

参数解决方案偏移误差增益误差微分非线性积分非线性温度漂移偏移误差增益误差电源抑制比1模拟输入;差分输入电压范围差分输入电阻电容输入带宽差分输入电压驻波比2电源3电源电流IAVCC(AVCC = 5.0五)IEVCC(EVCC = 3.3伏) IVDD(VDD的= 3.3伏)总功率耗散4

It is extensively used for different occasions that require DC power supply, including electrolytic chemistry, transmission, traction, electrostatic precipitation, electroplating and DC transmission etc.

整流变压器是指把电力网的三相正弦交流电压变换为所需要的交流整流电源的电压和相数的电源变压器,它广泛应用于点解化学、传动、牵引、静电除尘、电镀、直流输电等需要提供直流电源的场合。

In the voltage doubling rectifying circuit, the high voltage has been realized by the positive and negative way, and the voltage between the cathode and anode could reach 1700 V. In the fly-back switching high-voltage power supply, considering the requirements of each unit of the driving circuits on the power supply, the three-group voltage outputs including low-voltage outputs have been realized: 1600V/20mA,12V/500mA, 5V/50mA, in which UC3842 has been used to achieve pulse width modulation.

在倍压整流电路设计中,采用正、负电压方式实现高压,有效降低了阴阳极间所需的高压,最终两极间可产生1700V电压;在反激式开关电源电路设计中,利用UC3842芯片实现PWM调制,考虑到驱动电路各单元对电源的需求,设计了包括低压电源在内的三组电源输出:1600V/20mA,12V/500mA,5V/50mA。

Buck and Boost topology switching power conversion circuits as the core of this system, ultra low power MSP430F1222 microcontroller-based controller, microcontroller produced by the PWM pulse width modulation signals, respectively, two-way control switch voltage conversion circuit the turn-on and turn-off in order to achieve the above two kinds of topology switching power conversion circuit, and then to draw power from the flow of electrical energy has been filled into the rechargeable battery, and using microcontroller A / D input voltage implementation of the monitoring, according to the input voltage switching buck - circuit at a lower cost to achieve a highly efficient energy transfer, and the circuit is simple, the parameter to determine easy, self-low power consumption,to achieve full-featured.

本系统以Buck降压和Boost升压拓扑结构开关电源变换电路为核心,以超低功耗单片机MSP430F1222为主控器,由单片机产生PWM脉宽调制信号,分别控制两路电压变换电路中开关管的导通与关断从而实现以上两种拓扑结构开关电源变换电路,进而从一直流电源中吸取电能充入可充电电池,并利用单片机A/D对输入电压实施监测,根据输入电压切换升降压电路,以较低的成本实现了高效率的电能转移,并且电路简单、参数确定容易,自身功耗低,实现功能完整。

Single-phase Sinusoidal Pulse Width Modulation Inverter Power Supply in this paper belongs to AC power supply (AC-DC-AC convert). Control mode adopts feedback of voltage control. The methods of intermitting power flux and changing duty-cycle can change pulse width of drive voltage that adjust and rectify output voltage ultimately.

本文设计的单相脉宽调制逆变电源属于交流电源,采用电压反馈控制,通过中断功率通量和调节占空比的方法来改变驱动电压脉冲宽度来调整和稳定输出电压。

Accurate analog power is to provide power, digital chip, amplifiers, microcontroller is the voltage required by A/D sampling data output voltage, and comparison, if there is A deviation is the limit, adjust output signal output and closure, alarm, The working process of the working status, manostat by SCM outputs drive LED display, Display circuit used to display the size of the output voltage of power.

准确说就是模拟电源提供各个芯片电源、数码管、放大器所需电压,单片机则通过A/D采样输出电压,与设定值进行比较,若有偏差则调整输出,越限则输出报警信号并截流;工作过程中,稳压电源的工作状态均由单片机输出驱动LED显示;显示电路用于显示电源输出电压的大小。

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。

At the begin of the dissertation, control strategy is analysed for improving performances of the interver in dynamic, steady-state and minishing harmonious component of the output voltage. Firstly, the theory of the voltage differential multiloop feedback strategy is analysed .

着重于对逆变电源控制策略的研究,从控制策略的角度入手改善逆变电源的输出动态性能,提高逆变电源的稳态精度,同时改善输出电压的正弦度,减少输出电压的谐波含量。

Keywords: regulated power supply of direct current; single2ch ip m icrocomputer, digital control Abstract:This system to dc voltage source as the core, mainly AT89S52 SCM, through the keyboard controller to install dc power supply output voltage, setting stepping class can reach.01v output voltage, the range of 0-9.9 V, the maximum current 330mA for, and can show the actual pipe by digital output voltage values.

数控直流稳压电源论文关键词:论文关键词:直流稳压电源单片机数字控制论文摘要:论文摘要:本系统以直流电压源为核心,AT89S52 单片机为主控制器,通过键盘来设置直流电源的输出电压,设置步进等级可达 0.1V,输出电压范围为 0—9.9V,最大电流为 330mA,并可由液晶屏显示实际输出电压值。

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