電源適配器產(chan)品(pin)性能 電源適配器的輸出電流是多(duo)少

1、電源適配器的性能

如(ru)圖所示(shi)，在電(dian)源適(shi)配器(下面(mian)稱(cheng)adapter)的(de)(de)(de)(de)(de)標簽上面(mian)一般會有幾(ji)項是需要注意的(de)(de)(de)(de)(de)。第一，是adapter的(de)(de)(de)(de)(de)型號(hao)，例如(ru)這(zhe)顆(ke)adapter的(de)(de)(de)(de)(de)型號(hao)是XVE-120100，它(ta)告訴了我(wo)們幾(ji)個信(xin)息，就(jiu)(jiu)(jiu)是它(ta)的(de)(de)(de)(de)(de)廠商、瓦數等，XVE開頭的(de)(de)(de)(de)(de)一般就(jiu)(jiu)(jiu)是##公司代號(hao)，120100就(jiu)(jiu)(jiu)是說明這(zhe)個adapter是12W的(de)(de)(de)(de)(de)，050200的(de)(de)(de)(de)(de)就(jiu)(jiu)(jiu)是10W的(de)(de)(de)(de)(de);第二就(jiu)(jiu)(jiu)是adapter的(de)(de)(de)(de)(de)INPUT(輸入)，在中國通用的(de)(de)(de)(de)(de)一般是100-240V~50-60Hz，這(zhe)說明這(zhe)顆(ke)adapter可以在100V-240V的(de)(de)(de)(de)(de)電(dian)壓下面(mian)正常工作;第三(san)就(jiu)(jiu)(jiu)是adapter的(de)(de)(de)(de)(de)OUTPUT(輸出(chu))，兩個數字(zi)可以很快速的(de)(de)(de)(de)(de)算出(chu)這(zhe)個adapter得瓦數，例如(ru)這(zhe)個adapter，電(dian)壓12V*電(dian)流1A=12W(功率)，說明這(zhe)個電(dian)源就(jiu)(jiu)(jiu)是12W的(de)(de)(de)(de)(de)adapter。

多(duo)數筆記本(ben)電(dian)(dian)腦(nao)的(de)(de)電(dian)(dian)源適(shi)配器可(ke)以(yi)適(shi)合用(yong)於100～240V交流(liu)電(dian)(dian)(50/60Hz)。基本(ben)上大部份的(de)(de)筆記本(ben)電(dian)(dian)腦(nao)都把電(dian)(dian)源外置，用(yong)一條電(dian)(dian)源線和主機(ji)連接，這樣可(ke)以(yi)縮小主機(ji)的(de)(de)體積和重(zhong)量(liang)，只(zhi)有極(ji)少(shao)數的(de)(de)機(ji)型把電(dian)(dian)源內(nei)置在主機(ji)內(nei)。

在電(dian)(dian)(dian)(dian)源適配(pei)器上都(dou)有一個(ge)(ge)銘牌(pai)，上面標示著功率(lv)，輸(shu)入(ru)(ru)輸(shu)出電(dian)(dian)(dian)(dian)壓(ya)(ya)和電(dian)(dian)(dian)(dian)流量等指(zhi)標，特(te)別(bie)要注(zhu)意輸(shu)入(ru)(ru)電(dian)(dian)(dian)(dian)壓(ya)(ya)的(de)范圍，這就是所謂的(de)“旅行電(dian)(dian)(dian)(dian)源適配(pei)器”，如(ru)果到市(shi)電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)壓(ya)(ya)只(zhi)有110V的(de)國(guo)家時，這個(ge)(ge)特(te)性就很有用了，有些水貨(huo)筆記本電(dian)(dian)(dian)(dian)腦是只(zhi)在原產(chan)地(di)銷(xiao)售的(de)，沒有這種兼(jian)容電(dian)(dian)(dian)(dian)壓(ya)(ya)設(she)計，甚(shen)至只(zhi)有110V的(de)單一輸(shu)入(ru)(ru)電(dian)(dian)(dian)(dian)壓(ya)(ya)，在我國(guo)的(de)220V市(shi)電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)壓(ya)(ya)下(xia)插上就會燒毀(hui)。

2、使用電源適配器時的注意事項

1)、電源適配器的標稱電壓和電流是什么意思?

首先，一般電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源適配(pei)器(qi)標稱(cheng)的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)，是(shi)指開路(lu)輸(shu)(shu)出(chu)(chu)的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)，也(ye)就(jiu)(jiu)是(shi)外面(mian)不(bu)接任何負載(zai)，沒有(you)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流輸(shu)(shu)出(chu)(chu)時(shi)候(hou)的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)，所(suo)以(yi)也(ye)可以(yi)理解為，此電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)就(jiu)(jiu)是(shi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源輸(shu)(shu)出(chu)(chu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)的(de)(de)(de)(de)上限。對于(yu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源內部使用了主動(dong)穩壓(ya)(ya)的(de)(de)(de)(de)元(yuan)(yuan)件的(de)(de)(de)(de)情況下(xia)，即(ji)使市電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)有(you)所(suo)波(bo)動(dong)，其輸(shu)(shu)出(chu)(chu)也(ye)是(shi)恒(heng)定(ding)值(zhi)，象(xiang)市面(mian)上一般的(de)(de)(de)(de)小(xiao)變(bian)壓(ya)(ya)器(qi)，比如隨身聽之類配(pei)的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源，如果市電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)波(bo)動(dong)，該(gai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源的(de)(de)(de)(de)輸(shu)(shu)出(chu)(chu)也(ye)會隨之波(bo)動(dong)的(de)(de)(de)(de)。一般來(lai)講(jiang)普通電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源適配(pei)器(qi)的(de)(de)(de)(de)真正空載(zai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)也(ye)不(bu)一定(ding)和標稱(cheng)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)完全(quan)一致(zhi)，因為電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)子(zi)元(yuan)(yuan)件的(de)(de)(de)(de)特性不(bu)可能完全(quan)一致(zhi)，所(suo)以(yi)有(you)一定(ding)的(de)(de)(de)(de)誤差，誤差越小(xiao)，對電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)子(zi)元(yuan)(yuan)件的(de)(de)(de)(de)一致(zhi)性要求越高，生產的(de)(de)(de)(de)成(cheng)本就(jiu)(jiu)高了，所(suo)以(yi)價格也(ye)就(jiu)(jiu)貴一些(xie)了。

另外，關(guan)于(yu)標(biao)稱的電(dian)(dian)流值(zhi)，無論任何電(dian)(dian)源都有一(yi)(yi)(yi)定的內阻，因此(ci)當電(dian)(dian)源輸出電(dian)(dian)流的時(shi)候，會(hui)在(zai)內部產生(sheng)壓(ya)(ya)降(jiang)，導(dao)(dao)致(zhi)兩(liang)件(jian)事情，一(yi)(yi)(yi)個(ge)是產生(sheng)熱量，所以電(dian)(dian)源會(hui)熱，另一(yi)(yi)(yi)個(ge)是導(dao)(dao)致(zhi)輸出電(dian)(dian)壓(ya)(ya)降(jiang)低，相(xiang)當于(yu)內部消(xiao)耗。

2)、都是同樣標稱電壓的電源適配器，輸出電流不同，能不能用在同一臺本本上?

電(dian)(dian)(dian)(dian)(dian)源(yuan)適配(pei)器電(dian)(dian)(dian)(dian)(dian)壓一(yi)樣(yang)，輸出電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)不同，能不能用在同一(yi)臺本本上(shang)(shang)。基本的(de)原則是大(da)標稱電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)的(de)電(dian)(dian)(dian)(dian)(dian)源(yuan)可以代替小(xiao)標稱電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)的(de)電(dian)(dian)(dian)(dian)(dian)源(yuan)。估計(ji)有人會(hui)這樣(yang)想，覺得大(da)標稱電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)的(de)電(dian)(dian)(dian)(dian)(dian)源(yuan)會(hui)燒壞本本，因(yin)為電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)大(da)了嘛。實際(ji)上(shang)(shang)電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)多大(da)在電(dian)(dian)(dian)(dian)(dian)壓相同的(de)情況(kuang)下取決于負載，想想初中的(de)物理就知道了。

當(dang)本(ben)(ben)本(ben)(ben)高負荷運轉的(de)(de)(de)時候，電(dian)(dian)(dian)流(liu)大(da)些(xie)，本(ben)(ben)本(ben)(ben)進入待(dai)機的(de)(de)(de)時候，電(dian)(dian)(dian)流(liu)就小(xiao)(xiao)些(xie)，大(da)標(biao)稱(cheng)電(dian)(dian)(dian)流(liu)的(de)(de)(de)筆記本(ben)(ben)電(dian)(dian)(dian)源適配(pei)器有(you)足夠的(de)(de)(de)電(dian)(dian)(dian)流(liu)余量。反之，有(you)人(ren)用56w的(de)(de)(de)電(dian)(dian)(dian)源代替(ti)72w的(de)(de)(de)用起來也沒什么問題，原因是(shi)(shi)通常電(dian)(dian)(dian)源適配(pei)器的(de)(de)(de)設計留有(you)一(yi)定的(de)(de)(de)余量，負載功(gong)(gong)率都要(yao)(yao)(yao)小(xiao)(xiao)于電(dian)(dian)(dian)源功(gong)(gong)率，所以(yi)這種代替(ti)在一(yi)般使用上(shang)是(shi)(shi)可行(xing)的(de)(de)(de)，但是(shi)(shi)剩(sheng)余的(de)(de)(de)電(dian)(dian)(dian)源功(gong)(gong)率余量就很(hen)少了，一(yi)旦你(ni)的(de)(de)(de)本(ben)(ben)本(ben)(ben)接了很(hen)多(duo)外設，比如兩塊usb硬盤，然后cpu全速運轉，再有(you)一(yi)個底座(zuo)，上(shang)面來個光驅(qu)全速讀盤，再加上(shang)同(tong)時給(gei)電(dian)(dian)(dian)池充電(dian)(dian)(dian)，估計就危險了，要(yao)(yao)(yao)隨時用手摸摸你(ni)的(de)(de)(de)電(dian)(dian)(dian)源是(shi)(shi)不(bu)是(shi)(shi)已(yi)經可以(yi)煮雞蛋了。所以(yi)最好不(bu)要(yao)(yao)(yao)用小(xiao)(xiao)電(dian)(dian)(dian)流(liu)電(dian)(dian)(dian)源代替(ti)大(da)電(dian)(dian)(dian)流(liu)電(dian)(dian)(dian)源。

3)、一模一樣的機器，別人的電源適配器溫溫的，我的總是很燙，為什么?

先不要懷疑(yi)你的(de)(de)電(dian)源有問題(ti)，先看(kan)看(kan)你的(de)(de)本(ben)本(ben)在干什么，是(shi)不是(shi)像上面說的(de)(de)兩塊USB硬盤，CPU全(quan)速(su)運轉，硬盤瘋(feng)狂讀寫，光(guang)驅(qu)全(quan)速(su)讀盤，同時給(gei)電(dian)池充電(dian)，大聲放著音樂，屏幕亮度(du)最大，無線網卡一(yi)直在偵測信號等等，善用(yong)電(dian)源管理(li)(li)，根據任務合理(li)(li)調(diao)整本(ben)本(ben)的(de)(de)工作(zuo)狀態是(shi)很(hen)重要的(de)(de)。

4)、電源適配器標稱電壓比我的本本電池電壓高很多，不會出事吧?

首(shou)先，要(yao)知道的(de)是，電源適配器給(gei)本本供電與電池給(gei)本本供電是不(bu)同的(de)。

電池(chi)(chi)(chi)(chi)供電，電池(chi)(chi)(chi)(chi)的輸出(chu)是(shi)純直流(liu)，干凈得(de)很(hen)(hen)，電池(chi)(chi)(chi)(chi)的電壓既(ji)不可能(neng)(neng)也不需要設計得(de)很(hen)(hen)高，鋰(li)電池(chi)(chi)(chi)(chi)的化(hua)學特性(xing)決定(ding)了(le)一(yi)節電芯的輸出(chu)電壓只能(neng)(neng)在3.6V左右，所(suo)以很(hen)(hen)多電池(chi)(chi)(chi)(chi)都是(shi)采用三級(ji)串聯(lian)的方式，10.8V也就成了(le)很(hen)(hen)流(liu)行的電池(chi)(chi)(chi)(chi)電壓。有些(xie)電池(chi)(chi)(chi)(chi)的標稱值比3.6V的整(zheng)數倍稍大一(yi)些(xie)，比如3.7V或者11.2V等等，其實是(shi)為了(le)保護(hu)電池(chi)(chi)(chi)(chi)。

電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源適(shi)配器供(gong)(gong)(gong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)，情(qing)況(kuang)就(jiu)復雜一(yi)些，首先需(xu)(xu)要對加(jia)入電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)進(jin)行進(jin)一(yi)步的(de)(de)穩(wen)壓(ya)濾波，以(yi)保(bao)證在電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源性能(neng)不很好(hao)的(de)(de)情(qing)況(kuang)下穩(wen)定工作，穩(wen)壓(ya)后的(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)分(fen)城兩個部(bu)(bu)分(fen)，一(yi)路給本本工作供(gong)(gong)(gong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)，另一(yi)路給電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)充電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)，給本本供(gong)(gong)(gong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)的(de)(de)那部(bu)(bu)分(fen)同電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)供(gong)(gong)(gong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)的(de)(de)時候相同，而給電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)充電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)的(de)(de)那部(bu)(bu)分(fen)需(xu)(xu)要通過(guo)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)的(de)(de)充電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)控制電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路才(cai)可以(yi)加(jia)在電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)芯(xin)上，控制電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路可以(yi)很復雜，所以(yi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)必須大于電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)芯(xin)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)才(cai)有充分(fen)的(de)(de)能(neng)力(li)供(gong)(gong)(gong)應給充電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)控制電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路的(de)(de)各單元。最后真正(zheng)加(jia)到電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)芯(xin)上的(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)決不會是你的(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源標稱的(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)。放心(xin)好(hao)了(le)。

結語

電源(yuan)(yuan)適配器的(de)(de)(de)應用(yong)廣泛，并且(qie)具有(you)(you)持續(xu)增(zeng)長的(de)(de)(de)趨勢，電源(yuan)(yuan)生產(chan)廠(chang)家紛紛投入到對電源(yuan)(yuan)適配器的(de)(de)(de)研(yan)發當中。由于設備和(he)技術的(de)(de)(de)差異，導致電源(yuan)(yuan)適配器的(de)(de)(de)產(chan)品性能(neng)和(he)產(chan)品質量(liang)有(you)(you)很大的(de)(de)(de)差別(bie)，小編在這里提醒大家，選擇(ze)電源(yuan)(yuan)適配器時一定(ding)要謹慎(shen)。