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大功率直流穩壓電源的設計一般包括那些環節

2019/5/23 15:16:10??????點擊:

  的(de)(de)設計一般包(bao)括變壓(ya)(ya)、整流(liu)、濾(lv)波、穩壓(ya)(ya)四個(ge)基本環節。為了提高電(dian)(dian)(dian)(dian)(dian)源(yuan)的(de)(de)質(zhi)量及其(qi)可(ke)(ke)靠性(xing),需對電(dian)(dian)(dian)(dian)(dian)源(yuan)輸出電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)進行采(cai)樣(yang)、比較、放大,并用此誤差放大信號來調節其(qi)輸入電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya),使得負載(zai)變化時輸出電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)保持穩定。此外,為了提高電(dian)(dian)(dian)(dian)(dian)源(yuan)的(de)(de)使用安全性(xing)能,需設計簡單可(ke)(ke)靠的(de)(de)過壓(ya)(ya)過流(liu)保護(hu)電(dian)(dian)(dian)(dian)(dian)路(lu),防止電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)電(dian)(dian)(dian)(dian)(dian)流(liu)過大時損壞負載(zai)元件。以(yi)下將從電(dian)(dian)(dian)(dian)(dian)源(yuan)主(zhu)電(dian)(dian)(dian)(dian)(dian)路(lu)、控制電(dian)(dian)(dian)(dian)(dian)路(lu)、保護(hu)電(dian)(dian)(dian)(dian)(dian)路(lu)設計等3個(ge)方面(mian)簡要介(jie)紹直(zhi)流(liu)穩壓(ya)(ya)電(dian)(dian)(dian)(dian)(dian)源(yuan)的(de)(de)制作(zuo)方法。

主電路部分設計主要包括電源變壓器、整流電路、濾波電路、穩壓電路設計(圖1)。變壓器把高壓交流(liu)(liu)電(dian)(dian)變為所(suo)需要(yao)的低壓交流(liu)(liu)電(dian)(dian);整流(liu)(liu)器(qi)把交流(liu)(liu)電(dian)(dian)變為脈動直(zhi)流(liu)(liu)電(dian)(dian);濾波器(qi)濾除(chu)直(zhi)流(liu)(liu)中(zhong)的交流(liu)(liu)成(cheng)分;穩(wen)壓器(qi)把波動較大(da)的直(zhi)流(liu)(liu)電(dian)(dian)壓變為穩(wen)定的直(zhi)流(liu)(liu)電(dian)(dian)壓輸出。

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