電源適配器的(de)工作原(yuan)理你知道(dao)嗎(ma)?怎么維修(xiu)(xiu)你清(qing)楚(chu)嗎(ma)?對于電源適(shi)配(pei)器相(xiang)信大家都(dou)不陌生(sheng)，筆(bi)記(ji)本(ben)電腦(nao)就離不開電源適(shi)配(pei)器的(de)使用(yong)，因為電源適(shi)配(pei)器是給(gei)筆(bi)記(ji)本(ben)電腦(nao)等(deng)電子設(she)備(bei)充電供電的(de)，但是很多人(ren)并不清(qing)楚(chu)電源適(shi)配(pei)器的(de)工作原(yuan)理是怎樣的(de)，也不清(qing)楚(chu)怎么維修(xiu)(xiu)。下(xia)面(mian)就由(you)我們(men)的(de)技術人(ren)員(yuan)為大家詳細介(jie)紹(shao)：

　　電源適配器的工作原理

　　電(dian)(dian)源(yuan)適配(pei)器的工(gong)作原理就是把不穩(wen)定(ding)(ding)的電(dian)(dian)源(yuan)利(li)用開關電(dian)(dian)源(yuan)的原理通過轉(zhuan)化(hua)電(dian)(dian)路變(bian)成筆記本電(dian)(dian)腦(nao)(nao)需要的恒(heng)壓直(zhi)流電(dian)(dian)，給筆記本電(dian)(dian)腦(nao)(nao)供電(dian)(dian)和充(chong)電(dian)(dian)。這種(zhong)轉(zhuan)化(hua)電(dian)(dian)路，一(yi)定(ding)(ding)有(you)保護電(dian)(dian)路。

　　電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)適配(pei)器(qi)可以把不穩定的電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)利用(yong)開關電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)的原理，通過轉化電(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)變成用(yong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)所需要的恒壓(ya)直流(liu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)，給用(yong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)供(gong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)和充電(dian)(dian)(dian)(dian)(dian)(dian)(dian)。這種轉化電(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)，一定有保(bao)護(hu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(過流(liu)保(bao)護(hu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)、過壓(ya)保(bao)護(hu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)、短路(lu)(lu)保(bao)護(hu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)等)，防止意(yi)外時，保(bao)護(hu)用(yong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)不至于燒掉。

　　而開(kai)關(guan)電(dian)源(yuan)(yuan)與適(shi)配(pei)(pei)器(qi)都(dou)是(shi)開(kai)關(guan)電(dian)源(yuan)(yuan)，都(dou)由(you)高頻(pin)開(kai)關(guan)管及其控制電(dian)路組成(cheng)。適(shi)配(pei)(pei)器(qi)電(dian)源(yuan)(yuan)是(shi)一種穩壓開(kai)關(guan)電(dian)源(yuan)(yuan)，開(kai)關(guan)電(dian)源(yuan)(yuan)充電(dian)器(qi)是(shi)帶有浮充功能，電(dian)壓是(shi)隨電(dian)流的變小而變大，到最(zui)后是(shi)只有電(dian)壓而沒電(dian)流。

　　電(dian)(dian)源(yuan)適配器的(de)工(gong)作原(yuan)理就是這樣的(de)，其實(shi)(shi)電(dian)(dian)源(yuan)適配器其實(shi)(shi)是一個高(gao)精(jing)密、高(gao)效率的(de)開關型穩(wen)壓(ya)電(dian)(dian)源(yuan)，其作用是把220V的(de)交(jiao)流市電(dian)(dian)轉(zhuan)換為(wei)低(di)壓(ya)直(zhi)流電(dian)(dian)，為(wei)電(dian)(dian)子設備正(zheng)常工(gong)作提供穩(wen)定的(de)電(dian)(dian)力。

　　電源適配器的維修步驟與方法

　　首先我們要檢(jian)查是(shi)哪里出了問題，如果(guo)是(shi)線路(lu)故(gu)障：包(bao)括電(dian)源線損壞不通電(dian)、接觸(chu)口氧化接觸(chu)不良等情況。重點檢(jian)查要輸(shu)(shu)入線、輸(shu)(shu)出線是(shi)否通電(dian)。若是(shi)線路(lu)故(gu)障，可(ke)通過更換電(dian)源線等方式(shi)來解決。

　　如果是保險(xian)(xian)燒(shao)壞(huai)或炸(zha)掉，主要(yao)檢(jian)查整流橋、各二極(ji)管(guan)、開(kai)關管(guan)以(yi)及300伏上的大濾波(bo)電容等部位(wei)。導致保險(xian)(xian)燒(shao)、發黑(hei)，也可能是抗干(gan)擾電路出(chu)問題引起。尤(you)其要(yao)注意(yi)的是：因開(kai)關管(guan)擊穿導致保險(xian)(xian)燒(shao)，通常會燒(shao)壞(huai)電源(yuan)控制(zhi)芯片和(he)電流檢(jian)測(ce)電阻。熱(re)敏電阻也很容易和(he)保險(xian)(xian)一起被燒(shao)壞(huai)。

　　如果是元(yuan)件(jian)問題，由于現在(zai)的電源適配器(qi)(qi)已經大(da)量采(cai)(cai)用貼片(pian)元(yuan)件(jian)，一(yi)旦元(yuan)件(jian)出了問題，維修的難(nan)度就更加(jia)(jia)大(da)了。電源適配器(qi)(qi)的功(gong)率(lv)也(ye)是一(yi)天一(yi)天增大(da)，這樣(yang)對電子元(yuan)件(jian)的考驗越(yue)來越(yue)大(da)，如果電源適配器(qi)(qi)采(cai)(cai)用的電子元(yuan)件(jian)質量不過關(guan)、PCB布線不當，就很有(you)可(ke)能加(jia)(jia)大(da)故(gu)障(zhang)概(gai)率(lv)。

　　觀測(ce)電(dian)腦(nao)的(de)指示燈變化：如果你插上電(dian)源適配器(qi)后，你可以看到充電(dian)的(de)指示燈時(shi)亮(liang)時(shi)滅(mie)，有時(shi)間一直(zhi)不(bu)滅(mie)，則是筆記本里(li)面那個電(dian)源適配器(qi)接口有問題(ti)，一般可能(neng)里(li)面線(xian)斷了、電(dian)路板老(lao)化、焊接掉落等原因(yin)。此(ci)稱(cheng)為虛焊現象。這種情況(kuang)只有叫專業人事修理。

　　這些就是電(dian)源適(shi)配(pei)器的(de)工作(zuo)原理(li)和維修步驟方法，有(you)需要的(de)朋友(you)們(men)還是可以多了解(jie)關于電(dian)源適(shi)配(pei)器的(de)，以后如果遇到故障或問題就可以自己快(kuai)速排(pai)查并(bing)解(jie)決。