【正文】 I 畢業(yè)設計 題 目 : 數(shù)顯式直流穩(wěn)壓電源電路設計 英文題目 : Digital DC power supply circuit design 學 院 : 共青學院 系 別 : 信息工程 系 專 業(yè) : 應用電子技術 班 級 : 09 應用電子技術（ 1）班 II 摘 要 當今社會人們極大的享受著電子設備帶來的便利，但是任何電子設備都有一個共同的電路電源電路。大到超級計算機、小到袖珍計算器，所有的電子設備都必須在電源電路的支持下才能正常工作。 常用的穩(wěn)壓電源有交流和直流之分， 當然這些電源電路的樣式、復雜程度千差萬別。 不可否認電源已經(jīng)廣泛地應用于我們生活的方方面面，所以，學習并了解電源的制作原理和技術對于我們的生產(chǎn)和發(fā)展都具有積極的意義。 由于電子技術的特性，電子設備對電源電路的要求就是能夠提供持續(xù)穩(wěn)定、滿足負載要求的電能，而且通常情況下都要求提供穩(wěn)定的直流電能。提供這 種穩(wěn)定的直流電能的電源就是直流穩(wěn)壓電源。直流穩(wěn)壓電源在電源技術中占有十分重要的地位 。 本文主要設計并制作數(shù)字顯示的直流穩(wěn)壓電源。本電源作為一個微型啟動器，具有可調(diào)整電壓，調(diào)壓范圍是 ，而且具備輸出電壓可以顯示的功能。本文介紹了直流穩(wěn)壓系統(tǒng)的總體的設計方案，它主要由變壓器部分、整流濾波部分、穩(wěn)壓部分、電壓數(shù)字顯示部分和輸出部分組成。電源的穩(wěn)壓部分用三端集成穩(wěn)壓管 LM317完成，數(shù)字顯示部分用 ICL7107芯片完成。 ICL7107是一種市場上應用非常廣泛的集成芯片，內(nèi)置程序，可以直接驅(qū)動 LED數(shù) 碼管。本設計的顯示部分是采用 ICL7107芯片制作 LED顯示的數(shù)字電壓表，并聯(lián)到輸出端，完成電壓顯示的功能。本電源具有設計簡單靈活，成本低，效率高，調(diào)整精度高等優(yōu)點，在市場上有很好的應用前景。 III Abstract Today39。s society people greatly enjoy the convenience of electronic equipment, electronic equipment, but any more than there is a mon circuit power supply circuit. Large superputers, small pocket calculator, all electronic devices must be more support in the power circuit to work properly. Commonly used with AC and DC power supply of the points, of course, the power supply circuit style, plexity vary widely. Undeniable power has been widely used in all aspects of our lives, so learn and understand the power of production principles and techniques for our production and development and many have a positive meaning. As characteristic of electronic technology, electronic circuit design equipment for the power requirement is to provide a steady, full of energy load requirements, and usually require a stable DC performance. This can provide a stable DC power supply is DC regulated power supply. DC power supply in power supply technology plays a very important position. In this paper, design and production figures show that the DC power supply. The power supply as a ministarter with adjustable voltage regulator range , and output voltage can be displayed with the function. This article describes the display section and the output DC ponent. Power supply regulator part of the integrated threeterminal regulator with a LM317 pleted, the digital display section plete with TCL7107 chip. TCL7107 is a very broad application on the market integrated chip, builtin program, you can directly drive LED digital tube. The design of the display part of the chip is produced using TCL7107 LED display digital voltmeter, in parallel to the output voltage display function to plete. IV 目 錄 摘要 .............................................................................................................................................. II 英文摘要 .....................................................................................................................................III 1前言 ........................................................................................................................................... 1 穩(wěn)壓直流電源的研究背景 ................................................................................................. 1 課題的主要內(nèi)容 ................................................................................................................. 1 電源的輸出控 制 .............................................................................................................. 1 穩(wěn)壓直流電源的功能 ...................................................................................................... 2 性能指標 .......................................................................................................................... 2 論文的總體結(jié)構(gòu) .............................................................................................................. 2 2 方案的選擇和設計思路 ........................................................................................................ 3 方案設計與論證 ................................................................................................................. 3 芯片的選擇 ......................................................................................................................... 4 LM317 三端可調(diào)節(jié)穩(wěn)壓器 ............................................................................................. 4 ICL7107 三位半 LCD/LED 顯示 A/D 轉(zhuǎn)換器 ............................................................... 5 3 可調(diào)穩(wěn)壓直流電源的設計 ............................................................................