電源適配器的(de)工(gong)作原理你知道(dao)嗎(ma)?怎(zen)么維修(xiu)你清(qing)楚嗎(ma)?對于電(dian)(dian)源適(shi)(shi)配(pei)(pei)器相信大家(jia)都不(bu)陌生，筆記本電(dian)(dian)腦就離不(bu)開(kai)電(dian)(dian)源適(shi)(shi)配(pei)(pei)器的(de)使用(yong)，因(yin)為(wei)電(dian)(dian)源適(shi)(shi)配(pei)(pei)器是(shi)給筆記本電(dian)(dian)腦等電(dian)(dian)子設備(bei)充電(dian)(dian)供電(dian)(dian)的(de)，但是(shi)很多人并不(bu)清(qing)楚電(dian)(dian)源適(shi)(shi)配(pei)(pei)器的(de)工(gong)作原理是(shi)怎(zen)樣(yang)的(de)，也不(bu)清(qing)楚怎(zen)么維修(xiu)。下面就由我們的(de)技術(shu)人員為(wei)大家(jia)詳(xiang)細介(jie)紹(shao)：

　　電源適配器的工作原理

　　電(dian)(dian)(dian)(dian)源適配器的(de)(de)工作原(yuan)理(li)就是把(ba)不穩定的(de)(de)電(dian)(dian)(dian)(dian)源利用開關電(dian)(dian)(dian)(dian)源的(de)(de)原(yuan)理(li)通過轉(zhuan)化(hua)電(dian)(dian)(dian)(dian)路(lu)變成筆記(ji)(ji)本電(dian)(dian)(dian)(dian)腦需要的(de)(de)恒壓直流(liu)電(dian)(dian)(dian)(dian)，給筆記(ji)(ji)本電(dian)(dian)(dian)(dian)腦供電(dian)(dian)(dian)(dian)和充電(dian)(dian)(dian)(dian)。這種轉(zhuan)化(hua)電(dian)(dian)(dian)(dian)路(lu)，一(yi)定有保(bao)護電(dian)(dian)(dian)(dian)路(lu)。

　　電(dian)(dian)(dian)(dian)(dian)源(yuan)適配器可以把不(bu)穩(wen)定(ding)的電(dian)(dian)(dian)(dian)(dian)源(yuan)利(li)用(yong)開關電(dian)(dian)(dian)(dian)(dian)源(yuan)的原理，通過轉化電(dian)(dian)(dian)(dian)(dian)路(lu)(lu)變(bian)成用(yong)電(dian)(dian)(dian)(dian)(dian)器所需要的恒壓直流(liu)電(dian)(dian)(dian)(dian)(dian)，給用(yong)電(dian)(dian)(dian)(dian)(dian)器供電(dian)(dian)(dian)(dian)(dian)和(he)充電(dian)(dian)(dian)(dian)(dian)。這種轉化電(dian)(dian)(dian)(dian)(dian)路(lu)(lu)，一定(ding)有保(bao)(bao)護(hu)(hu)電(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(過流(liu)保(bao)(bao)護(hu)(hu)電(dian)(dian)(dian)(dian)(dian)路(lu)(lu)、過壓保(bao)(bao)護(hu)(hu)電(dian)(dian)(dian)(dian)(dian)路(lu)(lu)、短(duan)路(lu)(lu)保(bao)(bao)護(hu)(hu)電(dian)(dian)(dian)(dian)(dian)路(lu)(lu)等)，防止意外時，保(bao)(bao)護(hu)(hu)用(yong)電(dian)(dian)(dian)(dian)(dian)器不(bu)至(zhi)于(yu)燒掉(diao)。

　　而開(kai)(kai)(kai)關(guan)電(dian)源(yuan)與適配器(qi)都是(shi)(shi)開(kai)(kai)(kai)關(guan)電(dian)源(yuan)，都由(you)高頻開(kai)(kai)(kai)關(guan)管及其控制電(dian)路組成。適配器(qi)電(dian)源(yuan)是(shi)(shi)一種穩壓開(kai)(kai)(kai)關(guan)電(dian)源(yuan)，開(kai)(kai)(kai)關(guan)電(dian)源(yuan)充電(dian)器(qi)是(shi)(shi)帶有浮充功能，電(dian)壓是(shi)(shi)隨電(dian)流的變(bian)小而變(bian)大，到最后是(shi)(shi)只(zhi)有電(dian)壓而沒電(dian)流。

　　電(dian)(dian)(dian)源適(shi)配器的工作(zuo)原理就(jiu)是這樣的，其(qi)實電(dian)(dian)(dian)源適(shi)配器其(qi)實是一個高精密、高效率(lv)的開關型(xing)穩壓(ya)電(dian)(dian)(dian)源，其(qi)作(zuo)用是把(ba)220V的交流(liu)市電(dian)(dian)(dian)轉換(huan)為低壓(ya)直(zhi)流(liu)電(dian)(dian)(dian)，為電(dian)(dian)(dian)子設備正常工作(zuo)提供(gong)穩定的電(dian)(dian)(dian)力。

　　電源適配器的維修步驟與方法

　　首先我們(men)要(yao)檢查(cha)是(shi)(shi)哪(na)里出了問題，如(ru)果是(shi)(shi)線(xian)路(lu)(lu)故障：包括電源線(xian)損(sun)壞不(bu)通(tong)電、接觸口(kou)氧化接觸不(bu)良(liang)等情況。重點檢查(cha)要(yao)輸(shu)入線(xian)、輸(shu)出線(xian)是(shi)(shi)否通(tong)電。若是(shi)(shi)線(xian)路(lu)(lu)故障，可(ke)通(tong)過更換(huan)電源線(xian)等方式來解(jie)決(jue)。

　　如果是(shi)(shi)保(bao)險(xian)燒(shao)(shao)壞或炸掉，主(zhu)要檢查整流(liu)橋、各二極管、開(kai)(kai)關管以及300伏上的大濾波電容(rong)等部位。導致保(bao)險(xian)燒(shao)(shao)、發黑，也可能是(shi)(shi)抗干擾電路(lu)出問題引(yin)起。尤(you)其要注(zhu)意的是(shi)(shi)：因開(kai)(kai)關管擊(ji)穿導致保(bao)險(xian)燒(shao)(shao)，通常會燒(shao)(shao)壞電源控制芯片(pian)和電流(liu)檢測(ce)電阻。熱敏電阻也很容(rong)易和保(bao)險(xian)一(yi)起被燒(shao)(shao)壞。

　　如(ru)果是(shi)元件(jian)(jian)問題(ti)，由于現在的(de)(de)電源適配(pei)器(qi)(qi)已(yi)經大(da)量采用(yong)貼片元件(jian)(jian)，一(yi)旦(dan)元件(jian)(jian)出了(le)問題(ti)，維修(xiu)的(de)(de)難度就(jiu)更加(jia)大(da)了(le)。電源適配(pei)器(qi)(qi)的(de)(de)功率(lv)也是(shi)一(yi)天一(yi)天增(zeng)大(da)，這樣(yang)對電子元件(jian)(jian)的(de)(de)考驗(yan)越(yue)來越(yue)大(da)，如(ru)果電源適配(pei)器(qi)(qi)采用(yong)的(de)(de)電子元件(jian)(jian)質(zhi)量不過(guo)關、PCB布線(xian)不當，就(jiu)很(hen)有(you)可(ke)能(neng)加(jia)大(da)故障概率(lv)。

　　觀測電(dian)腦的(de)指(zhi)示(shi)(shi)燈變(bian)化：如果(guo)你插(cha)上(shang)電(dian)源適配(pei)器后，你可以看到充電(dian)的(de)指(zhi)示(shi)(shi)燈時亮時滅(mie)，有時間一(yi)直不滅(mie)，則(ze)是筆記(ji)本里(li)面那個(ge)電(dian)源適配(pei)器接口有問題，一(yi)般(ban)可能里(li)面線斷了、電(dian)路板老化、焊接掉落等(deng)原因。此稱為(wei)虛焊現象。這種情況(kuang)只有叫專(zhuan)業人事修(xiu)理。

　　這些就是(shi)電(dian)源適(shi)配器的(de)工作原理和維修步驟(zou)方法，有需要(yao)的(de)朋友們還是(shi)可(ke)以多了解關于電(dian)源適(shi)配器的(de)，以后如果遇到故障或問題就可(ke)以自己快速排查(cha)并解決。