稳压电源的研究毕业论文剖析.docxVIP

PAGE \* MERGEFORMAT18 稳压电源的研究 摘 要 直流稳压电源是各类电子设备的重要组成部分，为设备提供稳定的电压。目前，在大多数电子设备及仪器中，几乎都必须用到直流稳压电源来使其正常工作，最常用的是能将有效值为220V、频率为50Hz的交流电网的电压转换成一定幅值的稳定的直流电压。 本文是基于Multisim仿真软件研究利用可调式稳压器LM317实现将220V的市电转变为1.25V~12V可调性输出的直流稳压电源。整个电源电路主要由变压器、整流电路、滤波电路以及稳压电路四大部分组成。该类电源具有体积小,稳定性好且性价比较高的优点。本文主要介绍稳压电源的原理及其具体实现步骤,并分析具体硬件电路的工作原理及具体实现方法。经反复仿真,结果表明设计的电源具有灵活的可调性和良好的控制效果，此类电源可广泛运用于电子仪器、仪表及其他电子控制电路等实验场合。 关键词:Multisim；变压器；整流电路；滤波电路；稳压电路  Abstract DC regulated power supply is very important part which can support device to work steadily. Nowadays, almost every electric device must use DC regulated power supply. The way that can translate AC to DC was wide used in the life. This system which we design is based on Mutisim software. We use LM317 chip to design DC regulated power supply. This system consists of transformer, rectifier, filter and a voltage regulator. In this paper, we introduce the step of DC power supply design and analyze it’s principle. Thought analyzing many times, we found the result meet the demand. And this power is small and stable and cheap. Therefore, it can widely use in most electric devices. Key Words: Multisim; Transformer; Rectifier ;Filter circuit; Voltage regulator  目 录  TOC \o 1-3 \h \z \u  HYPERLINK \l _Toc418626933 摘要  PAGEREF _Toc418626933 \h I  HYPERLINK \l _Toc418626934 Abstract  PAGEREF _Toc418626934 \h II  HYPERLINK \l _Toc418626935 1 引言  PAGEREF _Toc418626935 \h 1  HYPERLINK \l _Toc418626936 1.1稳压直流电源的研究背景  PAGEREF _Toc418626936 \h 1  HYPERLINK \l _Toc418626937 1.2稳压电源发展现状及前景  PAGEREF _Toc418626937 \h 1  HYPERLINK \l _Toc418626938 1.2本文主要研究内容及结构安排  PAGEREF _Toc418626938 \h 2  HYPERLINK \l _Toc418626939 2 直流稳压电源的实现原理  PAGEREF _Toc418626939 \h 2  HYPERLINK \l _Toc418626940 3 稳压电源系统的研究  PAGEREF _Toc418626940 \h 3  HYPERLINK \l _Toc418626941 3.1变压器  PAGEREF _Toc418626941 \h 3  HYPERLINK \l _Toc418626942 3.2整流电路  PAGEREF _Toc418626942 \h 4  HYPERLINK \l _Toc418626943 3.2.1半波整流  PAGER