電源適配器的(de)工作(zuo)原理(li)你(ni)知道嗎?怎(zen)么維修你(ni)清(qing)楚嗎?對于電(dian)(dian)(dian)源(yuan)適(shi)配器相信大家都不陌生，筆(bi)記本(ben)電(dian)(dian)(dian)腦就(jiu)離不開電(dian)(dian)(dian)源(yuan)適(shi)配器的(de)使用，因為電(dian)(dian)(dian)源(yuan)適(shi)配器是(shi)給筆(bi)記本(ben)電(dian)(dian)(dian)腦等(deng)電(dian)(dian)(dian)子設備充電(dian)(dian)(dian)供(gong)電(dian)(dian)(dian)的(de)，但是(shi)很多(duo)人并不清(qing)楚電(dian)(dian)(dian)源(yuan)適(shi)配器的(de)工作(zuo)原理(li)是(shi)怎(zen)樣的(de)，也(ye)不清(qing)楚怎(zen)么維修。下面就(jiu)由我們的(de)技術人員為大家詳細介紹：

　　電源適配器的工作原理

　　電(dian)(dian)(dian)源(yuan)適配器(qi)的(de)工作原理(li)(li)就是把不穩定(ding)的(de)電(dian)(dian)(dian)源(yuan)利用開(kai)關電(dian)(dian)(dian)源(yuan)的(de)原理(li)(li)通過轉化電(dian)(dian)(dian)路變成筆記本電(dian)(dian)(dian)腦(nao)需要的(de)恒壓直流(liu)電(dian)(dian)(dian)，給筆記本電(dian)(dian)(dian)腦(nao)供(gong)電(dian)(dian)(dian)和充電(dian)(dian)(dian)。這種轉化電(dian)(dian)(dian)路，一定(ding)有保護電(dian)(dian)(dian)路。

　　電(dian)源適配(pei)器可以(yi)把不(bu)(bu)穩定(ding)(ding)的電(dian)源利(li)用(yong)開關電(dian)源的原理，通(tong)過(guo)(guo)轉化(hua)電(dian)路變成用(yong)電(dian)器所需(xu)要的恒壓(ya)直流電(dian)，給用(yong)電(dian)器供電(dian)和充電(dian)。這種轉化(hua)電(dian)路，一定(ding)(ding)有保(bao)護(hu)電(dian)路(過(guo)(guo)流保(bao)護(hu)電(dian)路、過(guo)(guo)壓(ya)保(bao)護(hu)電(dian)路、短路保(bao)護(hu)電(dian)路等)，防(fang)止意(yi)外時，保(bao)護(hu)用(yong)電(dian)器不(bu)(bu)至于燒掉。

　　而開關(guan)電(dian)(dian)(dian)源與適配(pei)器(qi)都是開關(guan)電(dian)(dian)(dian)源，都由高(gao)頻開關(guan)管及(ji)其控制電(dian)(dian)(dian)路組成。適配(pei)器(qi)電(dian)(dian)(dian)源是一種穩(wen)壓(ya)(ya)開關(guan)電(dian)(dian)(dian)源，開關(guan)電(dian)(dian)(dian)源充電(dian)(dian)(dian)器(qi)是帶有浮充功能，電(dian)(dian)(dian)壓(ya)(ya)是隨(sui)電(dian)(dian)(dian)流(liu)的變小而變大，到最(zui)后(hou)是只有電(dian)(dian)(dian)壓(ya)(ya)而沒(mei)電(dian)(dian)(dian)流(liu)。

　　電(dian)源(yuan)適(shi)配器的(de)工作(zuo)原(yuan)理就是(shi)這(zhe)樣的(de)，其(qi)(qi)實(shi)電(dian)源(yuan)適(shi)配器其(qi)(qi)實(shi)是(shi)一個高精密、高效(xiao)率的(de)開關型穩壓(ya)電(dian)源(yuan)，其(qi)(qi)作(zuo)用是(shi)把220V的(de)交(jiao)流市電(dian)轉換(huan)為(wei)低壓(ya)直流電(dian)，為(wei)電(dian)子設備正常工作(zuo)提供穩定的(de)電(dian)力。

　　電源適配器的維修步驟與方法

　　首先我們要檢查是(shi)(shi)哪(na)里(li)出(chu)(chu)了問題，如果是(shi)(shi)線(xian)路故障(zhang)：包括電(dian)源線(xian)損(sun)壞不通(tong)電(dian)、接(jie)(jie)觸口氧化接(jie)(jie)觸不良等情況。重點檢查要輸入線(xian)、輸出(chu)(chu)線(xian)是(shi)(shi)否通(tong)電(dian)。若是(shi)(shi)線(xian)路故障(zhang)，可通(tong)過更換電(dian)源線(xian)等方式(shi)來解決(jue)。

　　如果是保(bao)險(xian)燒壞或炸(zha)掉，主(zhu)要檢查整流橋、各二極管、開關(guan)管以及300伏上的大濾波電(dian)(dian)(dian)容(rong)等(deng)部位。導(dao)致保(bao)險(xian)燒、發黑，也(ye)可能(neng)是抗干擾電(dian)(dian)(dian)路出問題引起。尤其要注意的是：因開關(guan)管擊(ji)穿導(dao)致保(bao)險(xian)燒，通常(chang)會燒壞電(dian)(dian)(dian)源控制(zhi)芯片和電(dian)(dian)(dian)流檢測(ce)電(dian)(dian)(dian)阻。熱(re)敏電(dian)(dian)(dian)阻也(ye)很容(rong)易和保(bao)險(xian)一起被燒壞。

　　如(ru)果是元(yuan)(yuan)件問題，由于現在的(de)(de)電(dian)(dian)源(yuan)(yuan)適配(pei)器(qi)(qi)已經(jing)大量采(cai)(cai)用貼(tie)片元(yuan)(yuan)件，一(yi)旦元(yuan)(yuan)件出了(le)問題，維修的(de)(de)難度就(jiu)更加大了(le)。電(dian)(dian)源(yuan)(yuan)適配(pei)器(qi)(qi)的(de)(de)功率也(ye)是一(yi)天(tian)一(yi)天(tian)增大，這樣對電(dian)(dian)子(zi)元(yuan)(yuan)件的(de)(de)考驗越(yue)來越(yue)大，如(ru)果電(dian)(dian)源(yuan)(yuan)適配(pei)器(qi)(qi)采(cai)(cai)用的(de)(de)電(dian)(dian)子(zi)元(yuan)(yuan)件質量不(bu)過關、PCB布線不(bu)當，就(jiu)很有可(ke)能加大故障概率。

　　觀測電(dian)(dian)腦的(de)指示燈變化：如果你(ni)插上電(dian)(dian)源適配器(qi)后，你(ni)可(ke)以看(kan)到充電(dian)(dian)的(de)指示燈時(shi)亮時(shi)滅(mie)(mie)，有(you)時(shi)間一直不滅(mie)(mie)，則是筆記本里面那個電(dian)(dian)源適配器(qi)接(jie)口有(you)問題，一般可(ke)能里面線斷(duan)了、電(dian)(dian)路板老化、焊接(jie)掉落等原因。此稱(cheng)為(wei)虛焊現(xian)象。這種(zhong)情況只有(you)叫專業人事(shi)修(xiu)理。

　　這些就是(shi)電源(yuan)適(shi)配(pei)器(qi)的工作(zuo)原理和維修步驟方法，有需要(yao)的朋友們還是(shi)可(ke)以多了解(jie)(jie)關(guan)于(yu)電源(yuan)適(shi)配(pei)器(qi)的，以后如果(guo)遇到(dao)故障或問題就可(ke)以自己快速排查并解(jie)(jie)決。