瑞薩杯20xx電子設(shè)計(jì)競(jìng)賽設(shè)計(jì)報(bào)告(已修改)
2025-06-08 13:10 本頁(yè)面
【正文】 1 瑞薩杯 20xx 全國(guó)電子設(shè)計(jì)競(jìng)賽設(shè)計(jì)報(bào)告 單相 ACDC 變換電路（ A 題） 【本科組】 摘 要 ： 本設(shè)計(jì)是基于 被廣泛應(yīng)用在小功率及各種電子設(shè)備領(lǐng)域的開(kāi)關(guān)電源而設(shè)計(jì)的直流供電電路。通過(guò)變壓器將 220V 的單相工頻交流電源降為 24V，再經(jīng)由 ACDC變換電路、 boost 電路 升壓 ，最后輸出穩(wěn)定的 36V 直流電壓向負(fù)載供電，并在此基礎(chǔ)上，實(shí)現(xiàn)輸出電流在 ~ 的范圍內(nèi)連續(xù)變化。此外當(dāng)電源電壓在20V~30V 的范圍內(nèi)發(fā)生波動(dòng)時(shí)，能夠保持輸出電壓基本不變。除了實(shí)現(xiàn)以上基本功能外，還對(duì)電路進(jìn)行了過(guò)流保護(hù)。 關(guān) 鍵詞： 開(kāi)關(guān)電源 ACDC 變換電路 boost 電路 穩(wěn)壓 Abstract： This design is based on the lowpower switch powers and those widely applied to all kinds of electronic devices to drive DC circuit .The 220V onephase AC power is lowered to 24V with a transformer ,rectified with a ACDC circuit ,then pulled up with a boost circuit to output permanent 36V DC voltage providing power for load resistance,and on this circumstances,realizing that the output current can consistently change within the range of to ,the output voltage should stay basically unchanged when the source voltage es to fluctuating between 20V~ circuit is ensured with overcurrent protection as well beside the basic functions as mentioned before. Keywords： switch power, ACDC converting circuit , boost circuit , stabilivolt 2 目錄 ......................................................................................................... 3 設(shè)計(jì)任務(wù) (見(jiàn)附 1) ............................................................................................ 3 設(shè)計(jì)要求 (見(jiàn)附 1) ............................................................................................ 3 題目分析 .......................................................................................................... 3 ..................................................................................................... 3 主電路方案的提出比較與選擇 ...................................................................... 3 方案選擇： ...................................................................................................... 4 方案論證： ...................................................................................................... 5 具體方案的確立 .............................................................................................. 5 ..................................................................................... 6 系統(tǒng)的總體設(shè)計(jì) ............................................................................................. 6 各個(gè)電路模塊的設(shè)計(jì) ..................................................................................... 6 ........................................................................................................... 10 程序總體流程圖 ............................................................................................ 11 功能模塊的流程圖 ........................................................................................ 12 .................................................................................................................. 12 系統(tǒng)調(diào)試的方案（方法） ............................................................................ 12 系統(tǒng)測(cè)試儀器 ...............................................................................................
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