電源適配器的(de)工(gong)作(zuo)原理你(ni)知道(dao)嗎?怎么(me)維修你(ni)清楚嗎?對于電(dian)(dian)源(yuan)(yuan)適配(pei)器相(xiang)信大家(jia)都(dou)不(bu)陌生，筆記本(ben)電(dian)(dian)腦(nao)就離不(bu)開電(dian)(dian)源(yuan)(yuan)適配(pei)器的(de)使用(yong)，因(yin)為(wei)電(dian)(dian)源(yuan)(yuan)適配(pei)器是(shi)給(gei)筆記本(ben)電(dian)(dian)腦(nao)等(deng)電(dian)(dian)子設備(bei)充電(dian)(dian)供電(dian)(dian)的(de)，但是(shi)很多人(ren)并(bing)不(bu)清楚電(dian)(dian)源(yuan)(yuan)適配(pei)器的(de)工(gong)作(zuo)原理是(shi)怎樣的(de)，也不(bu)清楚怎么(me)維修。下面就由我(wo)們的(de)技術人(ren)員為(wei)大家(jia)詳細介紹：

　　電源適配器的工作原理

　　電(dian)(dian)(dian)源適配器(qi)的工作原(yuan)理就(jiu)是把不穩定(ding)的電(dian)(dian)(dian)源利用開關(guan)電(dian)(dian)(dian)源的原(yuan)理通(tong)過轉化(hua)電(dian)(dian)(dian)路(lu)(lu)變(bian)成筆(bi)記本電(dian)(dian)(dian)腦需要的恒壓直流電(dian)(dian)(dian)，給筆(bi)記本電(dian)(dian)(dian)腦供電(dian)(dian)(dian)和(he)充電(dian)(dian)(dian)。這種轉化(hua)電(dian)(dian)(dian)路(lu)(lu)，一定(ding)有保護(hu)電(dian)(dian)(dian)路(lu)(lu)。

　　電(dian)(dian)(dian)源適(shi)配器可以把不穩定的電(dian)(dian)(dian)源利(li)用開關(guan)電(dian)(dian)(dian)源的原理，通過轉化(hua)電(dian)(dian)(dian)路(lu)變成用電(dian)(dian)(dian)器所需(xu)要的恒壓直流電(dian)(dian)(dian)，給用電(dian)(dian)(dian)器供電(dian)(dian)(dian)和(he)充(chong)電(dian)(dian)(dian)。這(zhe)種轉化(hua)電(dian)(dian)(dian)路(lu)，一(yi)定有(you)保(bao)(bao)(bao)護(hu)電(dian)(dian)(dian)路(lu)(過流保(bao)(bao)(bao)護(hu)電(dian)(dian)(dian)路(lu)、過壓保(bao)(bao)(bao)護(hu)電(dian)(dian)(dian)路(lu)、短路(lu)保(bao)(bao)(bao)護(hu)電(dian)(dian)(dian)路(lu)等)，防止意外(wai)時(shi)，保(bao)(bao)(bao)護(hu)用電(dian)(dian)(dian)器不至于燒(shao)掉(diao)。

　　而開(kai)關電(dian)(dian)源(yuan)與(yu)適(shi)配(pei)(pei)器(qi)都是(shi)開(kai)關電(dian)(dian)源(yuan)，都由高頻開(kai)關管及其控制電(dian)(dian)路組成。適(shi)配(pei)(pei)器(qi)電(dian)(dian)源(yuan)是(shi)一種穩壓開(kai)關電(dian)(dian)源(yuan)，開(kai)關電(dian)(dian)源(yuan)充電(dian)(dian)器(qi)是(shi)帶(dai)有(you)浮充功(gong)能，電(dian)(dian)壓是(shi)隨電(dian)(dian)流的變小而變大(da)，到(dao)最后是(shi)只有(you)電(dian)(dian)壓而沒電(dian)(dian)流。

　　電(dian)源適配器的(de)工作(zuo)原理就(jiu)是(shi)這樣的(de)，其實電(dian)源適配器其實是(shi)一個高精密、高效(xiao)率的(de)開關型穩壓電(dian)源，其作(zuo)用(yong)是(shi)把220V的(de)交(jiao)流市(shi)電(dian)轉換(huan)為低壓直流電(dian)，為電(dian)子設備正(zheng)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(jian)查是(shi)哪(na)里(li)出了(le)問題，如果是(shi)線路故(gu)障：包(bao)括電(dian)(dian)源線損壞不(bu)通電(dian)(dian)、接(jie)觸口氧化接(jie)觸不(bu)良等情(qing)況。重點檢(jian)查要輸入線、輸出線是(shi)否通電(dian)(dian)。若是(shi)線路故(gu)障，可通過(guo)更換電(dian)(dian)源線等方式(shi)來解決(jue)。

　　如果是(shi)保(bao)(bao)險燒(shao)壞(huai)(huai)或炸掉，主要檢查整流橋(qiao)、各(ge)二(er)極(ji)管、開(kai)關管以(yi)及(ji)300伏(fu)上的(de)大濾波電(dian)(dian)(dian)(dian)容等部位。導致(zhi)保(bao)(bao)險燒(shao)、發(fa)黑，也可能是(shi)抗干擾電(dian)(dian)(dian)(dian)路出問題(ti)引起。尤其要注(zhu)意的(de)是(shi)：因開(kai)關管擊穿導致(zhi)保(bao)(bao)險燒(shao)，通(tong)常(chang)會燒(shao)壞(huai)(huai)電(dian)(dian)(dian)(dian)源控制芯(xin)片和電(dian)(dian)(dian)(dian)流檢測電(dian)(dian)(dian)(dian)阻。熱敏電(dian)(dian)(dian)(dian)阻也很容易和保(bao)(bao)險一起被(bei)燒(shao)壞(huai)(huai)。

　　如(ru)果是元(yuan)件(jian)(jian)問(wen)題，由于現(xian)在的(de)電(dian)源適配(pei)器(qi)已(yi)經大量(liang)采用(yong)貼片元(yuan)件(jian)(jian)，一旦(dan)元(yuan)件(jian)(jian)出了問(wen)題，維修(xiu)的(de)難度就(jiu)更加(jia)大了。電(dian)源適配(pei)器(qi)的(de)功(gong)率也是一天(tian)一天(tian)增大，這樣對(dui)電(dian)子(zi)元(yuan)件(jian)(jian)的(de)考驗越來越大，如(ru)果電(dian)源適配(pei)器(qi)采用(yong)的(de)電(dian)子(zi)元(yuan)件(jian)(jian)質量(liang)不(bu)過關(guan)、PCB布線(xian)不(bu)當(dang)，就(jiu)很有可能加(jia)大故障概(gai)率。

　　觀測電腦(nao)的指示燈變(bian)化：如果你插上電源適配(pei)器后，你可(ke)以看到充電的指示燈時(shi)亮時(shi)滅，有(you)時(shi)間一直不(bu)滅，則是筆記本里(li)面(mian)那個電源適配(pei)器接口有(you)問(wen)題，一般(ban)可(ke)能里(li)面(mian)線(xian)斷了、電路(lu)板老化、焊(han)接掉落等原因。此(ci)稱(cheng)為虛焊(han)現象。這種情況只有(you)叫專業人事修理。

　　這些就是電源適(shi)(shi)配器(qi)的工(gong)作(zuo)原理和維(wei)修步驟方(fang)法(fa)，有需要(yao)的朋(peng)友們(men)還是可以(yi)(yi)多了解關于電源適(shi)(shi)配器(qi)的，以(yi)(yi)后如果(guo)遇到(dao)故障或問(wen)題就可以(yi)(yi)自(zi)己快(kuai)速(su)排(pai)查并解決。