freepeople性欧美熟妇, 色戒完整版无删减158分钟hd, 无码精品国产vα在线观看DVD, 丰满少妇伦精品无码专区在线观看,艾栗栗与纹身男宾馆3p50分钟,国产AV片在线观看,黑人与美女高潮,18岁女RAPPERDISSSUBS,国产手机在机看影片

正文內(nèi)容

單相ac-dc變換電路a題論文(已修改)

2024-11-18 09:12 本頁(yè)面
 

【正文】 . . 2020 年全國(guó)大學(xué)生電子設(shè)計(jì)競(jìng)賽 單相 ACDC 變換電路 ( A 題) 【 本科 組】 2020 年 9 月 7 日 . . 摘要:本設(shè)計(jì)利用 PFC 控制系統(tǒng)和 51 單片機(jī)控制系統(tǒng),通過(guò)對(duì)電路系統(tǒng)實(shí)施監(jiān)控和調(diào)整,來(lái)達(dá)到對(duì)電路性能的提升,以保證電路輸出滿足題目要求,負(fù)載電壓誤差不超過(guò)177。 ,負(fù)載調(diào)整率和電壓調(diào)整率均不超過(guò) %,功率因數(shù)在95%以上。并且能夠使電路在出現(xiàn)過(guò)流時(shí)能系統(tǒng)斷電,實(shí)現(xiàn)保護(hù),保證整個(gè)電路系統(tǒng)安全、高效的運(yùn)行。 關(guān)鍵詞: PFC 控制,單片機(jī)控制,自行校正 . . 目 錄 ................................................................................................................................................................5 ................................................................................................................................................................5 基本要求 ......................................................................................................................................................... 5 發(fā)揮部分 ......................................................................................................................................................... 5 ..........................................................................................................................................6 方案一: ............................................................................................................................................................... 6 方案二: ............................................................................................................................................................... 6 方案三: ............................................................................................................................................................... 6 ........................................................................................................................................................7 AC/DC 電源模塊 .......................................................................................................................................... 7 Boost 升壓模塊 ............................................................................................................................................. 7 升壓結(jié)構(gòu)特性分析 .............................................................................. 7 樣機(jī)電路設(shè)計(jì) ............................................................................................ 9 儲(chǔ)能電感 L............................................................................................... 10 輸出電壓取樣電阻 R R2 .......................................................................11 開(kāi)關(guān) S ......................................................................................................11 輸出二極管 D 和輸出電容器 C2 ................................................................11 外補(bǔ)償網(wǎng)絡(luò) ..............................................................................................11 斜坡補(bǔ)償 ................................................................................................. 12 功率因數(shù) 校正 模塊 .................................................................................................................................... 14 功率因數(shù)測(cè)量模塊 .................................................................................................................................... 14 電路保護(hù)模塊 ............................................................................................................................................. 15 89C54 單片機(jī)控制模塊 ............................................................................................................................ 15 LCD 液晶顯示模塊 .................................................................................................................................... 15 液晶顯示原理 ........................................................................................... 15 引腳功能說(shuō)明 ........................................................................................... 16 1602 液晶模塊的指令(說(shuō)明: 1 為高電平、 0 為低電平) ......................... 16 直流電源供電模塊 .................................................................................................................................... 17 ....
點(diǎn)擊復(fù)制文檔內(nèi)容
公司管理相關(guān)推薦
文庫(kù)吧 www.dybbs8.com
公安備案圖鄂ICP備17016276號(hào)-1