開關電源主要分哪兩大類呢?
人(ren)們在開(kai)關電(dian)源(yuan)技術領域是邊(bian)(bian)開發(fa)相(xiang)(xiang)關(guan)電(dian)力電(dian)子器(qi)件,邊(bian)(bian)開發(fa)開關(guan)變(bian)頻技術,兩(liang)者相(xiang)(xiang)互促進(jin)推動著開關(guan)電(dian)源(yuan)每年以超過兩(liang)位數字的(de)增長率向著輕(qing)、小、薄(bo)、低噪聲、高可靠、抗(kang)干(gan)擾的(de)方向發(fa)展。開關(guan)電(dian)源(yuan)可分為AC/DC和(he)DC/DC兩(liang)大(da)類(lei)。
微型(xing)低功率開(kai)關電源
開(kai)關電(dian)(dian)(dian)源正在(zai)(zai)(zai)走向大眾化,微型化。開(kai)關電(dian)(dian)(dian)源將逐步取(qu)代變壓器在(zai)(zai)(zai)生活中的所(suo)有應用,低(di)功率微型開(kai)關電(dian)(dian)(dian)源的應用要首先(xian)體現在(zai)(zai)(zai),數顯表、智能(neng)電(dian)(dian)(dian)表、手機充電(dian)(dian)(dian)器等方面(mian)。現階段國家在(zai)(zai)(zai)大力(li)推廣(guang)智能(neng)電(dian)(dian)(dian)網建設,對電(dian)(dian)(dian)能(neng)表的要求大幅提高,開(kai)關電(dian)(dian)(dian)源將逐步取(qu)代變壓器在(zai)(zai)(zai)電(dian)(dian)(dian)能(neng)表上面(mian)的應用。
反轉式串聯開關電源(yuan)
反(fan)(fan)轉式串(chuan)(chuan)聯(lian)開(kai)(kai)(kai)(kai)關(guan)(guan)電(dian)(dian)(dian)(dian)源(yuan)與一(yi)般串(chuan)(chuan)聯(lian)式開(kai)(kai)(kai)(kai)關(guan)(guan)電(dian)(dian)(dian)(dian)源(yuan)的(de)(de)(de)區別是(shi),這種反(fan)(fan)轉式串(chuan)(chuan)聯(lian)開(kai)(kai)(kai)(kai)關(guan)(guan)電(dian)(dian)(dian)(dian)源(yuan)輸(shu)出(chu)的(de)(de)(de)電(dian)(dian)(dian)(dian)壓(ya)是(shi)負電(dian)(dian)(dian)(dian)壓(ya),正(zheng)好與一(yi)般串(chuan)(chuan)聯(lian)式開(kai)(kai)(kai)(kai)關(guan)(guan)電(dian)(dian)(dian)(dian)源(yuan)輸(shu)出(chu)的(de)(de)(de)正(zheng)電(dian)(dian)(dian)(dian)壓(ya)極性相(xiang)反(fan)(fan);并且(qie)由于儲(chu)能電(dian)(dian)(dian)(dian)感(gan)L只在開(kai)(kai)(kai)(kai)關(guan)(guan)K關(guan)(guan)斷(duan)時才向(xiang)負載輸(shu)出(chu)電(dian)(dian)(dian)(dian)流,因此,在相(xiang)同條件下,反(fan)(fan)轉式串(chuan)(chuan)聯(lian)開(kai)(kai)(kai)(kai)關(guan)(guan)電(dian)(dian)(dian)(dian)源(yuan)輸(shu)出(chu)的(de)(de)(de)電(dian)(dian)(dian)(dian)流比串(chuan)(chuan)聯(lian)式開(kai)(kai)(kai)(kai)關(guan)(guan)電(dian)(dian)(dian)(dian)源(yuan)輸(shu)出(chu)的(de)(de)(de)電(dian)(dian)(dian)(dian)流小一(yi)倍。
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