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開關電源主要分哪兩大類呢?

2019/8/30 14:22:54??????點擊:

  人們(men)在開(kai)關電源技術(shu)領域是邊開(kai)發(fa)(fa)相關(guan)(guan)電力電子器件,邊開(kai)發(fa)(fa)開(kai)關(guan)(guan)變頻技術(shu),兩者(zhe)相互促進推(tui)動(dong)著開(kai)關(guan)(guan)電源每年以超(chao)過兩位數字的增長率向著輕、小、薄、低噪(zao)聲、高可靠、抗干擾的方向發(fa)(fa)展(zhan)。開(kai)關(guan)(guan)電源可分為AC/DC和DC/DC兩大類。

微型低(di)功率開關電源(yuan)
  開(kai)關電(dian)(dian)(dian)(dian)源正(zheng)在(zai)(zai)(zai)走向大眾(zhong)化(hua),微型化(hua)。開(kai)關電(dian)(dian)(dian)(dian)源將逐(zhu)步(bu)取(qu)代變(bian)(bian)壓(ya)器在(zai)(zai)(zai)生活中的所有應(ying)(ying)(ying)用,低(di)功率微型開(kai)關電(dian)(dian)(dian)(dian)源的應(ying)(ying)(ying)用要首先體現在(zai)(zai)(zai),數顯表、智能(neng)電(dian)(dian)(dian)(dian)表、手機充電(dian)(dian)(dian)(dian)器等(deng)方面。現階段國家在(zai)(zai)(zai)大力(li)推廣智能(neng)電(dian)(dian)(dian)(dian)網建設,對電(dian)(dian)(dian)(dian)能(neng)表的要求大幅提高,開(kai)關電(dian)(dian)(dian)(dian)源將逐(zhu)步(bu)取(qu)代變(bian)(bian)壓(ya)器在(zai)(zai)(zai)電(dian)(dian)(dian)(dian)能(neng)表上(shang)面的應(ying)(ying)(ying)用。
反轉式串聯開(kai)關(guan)電源
  反轉(zhuan)式(shi)(shi)串(chuan)聯(lian)開(kai)關(guan)電(dian)源(yuan)(yuan)與一(yi)般串(chuan)聯(lian)式(shi)(shi)開(kai)關(guan)電(dian)源(yuan)(yuan)的(de)區別(bie)是,這種反轉(zhuan)式(shi)(shi)串(chuan)聯(lian)開(kai)關(guan)電(dian)源(yuan)(yuan)輸(shu)出的(de)電(dian)壓是負電(dian)壓,正好(hao)與一(yi)般串(chuan)聯(lian)式(shi)(shi)開(kai)關(guan)電(dian)源(yuan)(yuan)輸(shu)出的(de)正電(dian)壓極性相反;并且由于儲能(neng)電(dian)感L只在開(kai)關(guan)K關(guan)斷時才(cai)向負載(zai)輸(shu)出電(dian)流,因此,在相同條件下,反轉(zhuan)式(shi)(shi)串(chuan)聯(lian)開(kai)關(guan)電(dian)源(yuan)(yuan)輸(shu)出的(de)電(dian)流比(bi)串(chuan)聯(lian)式(shi)(shi)開(kai)關(guan)電(dian)源(yuan)(yuan)輸(shu)出的(de)電(dian)流小一(yi)倍。

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