連續(xù)可調(diào)的直流穩(wěn)壓電源設(shè)計

電子信息工程論文編號:DZXX362 論文字數(shù):5837,頁數(shù):24

目   錄
1 前言 4
2．總體方案設(shè)計 5
2.1 方案一 5
2.2 方案二 6
2.3方案選擇 7
3．單元模塊設(shè)計 7
3.1單元模塊功能介紹 7
3.1.1輔助電源部分設(shè)計 7
3.1.2主要電源部分設(shè)計 9
3.1.3保護電路部分設(shè)計 9
3.1.4繼電器驅(qū)動部分設(shè)計 10
3.1.5 輸出電壓比較部分設(shè)計 11
3.1.6 編碼譯碼部分設(shè)計 12
3.2電路參數(shù)計算 12
3.2.1輔助電源參數(shù)計算 12
3.2.2主要電源參數(shù)計算 13
3.2.3元器件的選擇 13
3.3特殊器件介紹： 13
3.4各單元模塊連接 18
4．系統(tǒng)功能 18
5．設(shè)計總結(jié) 19
6 系統(tǒng)原理圖 20
結(jié) 束 語 22
謝 辭 23
參考文獻 24

【摘要】
 本論文主要闡述了穩(wěn)壓電源的設(shè)計流程。有電器的地方就有電源。所有的電子設(shè)備都離不開可靠的電源為其供電。現(xiàn)代電子設(shè)備中的電路使用了大量的半導(dǎo)體器件，這些半導(dǎo)體需要幾伏到幾十伏的直流供電，以便得到正常工作所必需的能源。這些直流電源有的屬于化學(xué)電源，如采用干電池和蓄電池，但這些不能持久性的供電。大多數(shù)電子設(shè)備的直流供電方法都是將交流電源經(jīng)過變壓、整流、濾波、穩(wěn)壓等變換為所需的直流電壓。完成這種變換任務(wù)的電源成為直流穩(wěn)壓電源。該方案是通過變壓器變壓，再經(jīng)過整流電路、濾波電路進而將交流電變?yōu)橹绷麟姡�在通過穩(wěn)壓器的穩(wěn)壓得到較穩(wěn)定的電壓，由于穩(wěn)壓器當(dāng)輸入電壓固定時只能在它的電壓差范圍內(nèi)調(diào)節(jié)輸出電壓，、所以要在調(diào)出電壓差的范圍時自動調(diào)檔，這是通過兩個比較器將輸出電壓和基準(zhǔn)電壓進行比較，再通過計數(shù)器的計數(shù)功能控制繼電器控制器的輸入情況來判斷輸出電壓的大小在哪個范圍，然后進行自動調(diào)檔。最后將穩(wěn)壓器的輸出電壓流經(jīng)保護電路，最后輸出。
 
關(guān)鍵詞： 整流   穩(wěn)壓   濾波    數(shù)控    電壓源

Abstract: This paper described the power supply design process. With electrical appliances, there is the power supply. All electronic equipment is essential for reliable power supply. Modern electronic equipment in the circuit using a large number of semiconductor devices, semiconductor volts to a few tens of volts of DC power, in order to obtain required by the normal energy. Some of these chemical DC power supply, such as batteries and used batteries, but these can not be sustained in power. Most of the DC power electronic equipment will be methods are the AC power transformer rectifier, filter, regulator, etc. transform the required DC voltage. Completion of this task transform power into DC power supply. The programme through the transformer transformer, through the rectifier circuit filter circuit which will be AC into DC, and the adoption of the regulation by regulators more stable voltage, input voltage regulator when it can only be fixed when the voltage difference within the scope of regulation of the output voltage, and therefore out of voltage difference in the scope of automatic Diaodang, it is through the two comparator output voltage and the reference voltage comparison, and through the counter counting function control relay controller The input to determine the size of the output voltage at which the scope, and then automatically Diaodang. Finally,the regulator output voltage protection circuit through final output.

Key words:  Rectifier   Regulators   Filtering    NC   Voltage Source