電源(yuan)適配(pei)器產品性能 電源(yuan)適配(pei)器的輸出(chu)電流是多少

1、電源適配器的性能

如圖所示，在電源(yuan)適配器(下面稱(cheng)adapter)的(de)(de)(de)(de)(de)標簽上(shang)面一(yi)般(ban)會(hui)有幾(ji)項是(shi)(shi)(shi)(shi)需要注意的(de)(de)(de)(de)(de)。第(di)一(yi)，是(shi)(shi)(shi)(shi)adapter的(de)(de)(de)(de)(de)型(xing)號(hao)，例如這(zhe)(zhe)顆adapter的(de)(de)(de)(de)(de)型(xing)號(hao)是(shi)(shi)(shi)(shi)XVE-120100，它(ta)告訴了我們幾(ji)個(ge)信息，就(jiu)是(shi)(shi)(shi)(shi)它(ta)的(de)(de)(de)(de)(de)廠(chang)商(shang)、瓦數(shu)等(deng)，XVE開(kai)頭(tou)的(de)(de)(de)(de)(de)一(yi)般(ban)就(jiu)是(shi)(shi)(shi)(shi)##公司代號(hao)，120100就(jiu)是(shi)(shi)(shi)(shi)說(shuo)明(ming)這(zhe)(zhe)個(ge)adapter是(shi)(shi)(shi)(shi)12W的(de)(de)(de)(de)(de)，050200的(de)(de)(de)(de)(de)就(jiu)是(shi)(shi)(shi)(shi)10W的(de)(de)(de)(de)(de);第(di)二就(jiu)是(shi)(shi)(shi)(shi)adapter的(de)(de)(de)(de)(de)INPUT(輸入)，在中國通用的(de)(de)(de)(de)(de)一(yi)般(ban)是(shi)(shi)(shi)(shi)100-240V~50-60Hz，這(zhe)(zhe)說(shuo)明(ming)這(zhe)(zhe)顆adapter可以在100V-240V的(de)(de)(de)(de)(de)電壓下面正常(chang)工作(zuo);第(di)三就(jiu)是(shi)(shi)(shi)(shi)adapter的(de)(de)(de)(de)(de)OUTPUT(輸出(chu))，兩個(ge)數(shu)字可以很(hen)快速的(de)(de)(de)(de)(de)算出(chu)這(zhe)(zhe)個(ge)adapter得瓦數(shu)，例如這(zhe)(zhe)個(ge)adapter，電壓12V*電流1A=12W(功率)，說(shuo)明(ming)這(zhe)(zhe)個(ge)電源(yuan)就(jiu)是(shi)(shi)(shi)(shi)12W的(de)(de)(de)(de)(de)adapter。

多(duo)數(shu)筆記(ji)本(ben)電(dian)(dian)腦的(de)(de)電(dian)(dian)源(yuan)適配器可以(yi)適合用於100～240V交流電(dian)(dian)(50/60Hz)。基(ji)本(ben)上大(da)部份的(de)(de)筆記(ji)本(ben)電(dian)(dian)腦都把(ba)電(dian)(dian)源(yuan)外置(zhi)，用一條(tiao)電(dian)(dian)源(yuan)線和主(zhu)(zhu)(zhu)機(ji)連(lian)接，這樣可以(yi)縮小(xiao)主(zhu)(zhu)(zhu)機(ji)的(de)(de)體(ti)積和重量(liang)，只有極少數(shu)的(de)(de)機(ji)型把(ba)電(dian)(dian)源(yuan)內(nei)置(zhi)在主(zhu)(zhu)(zhu)機(ji)內(nei)。

在(zai)電(dian)(dian)(dian)源適配器上都有(you)一(yi)個銘牌(pai)，上面標示著功(gong)率，輸入輸出電(dian)(dian)(dian)壓(ya)和電(dian)(dian)(dian)流量等指標，特別(bie)要注意輸入電(dian)(dian)(dian)壓(ya)的(de)(de)范圍，這(zhe)就(jiu)是(shi)(shi)所謂的(de)(de)“旅(lv)行(xing)電(dian)(dian)(dian)源適配器”，如果到(dao)市(shi)電(dian)(dian)(dian)電(dian)(dian)(dian)壓(ya)只有(you)110V的(de)(de)國家時(shi)，這(zhe)個特性就(jiu)很(hen)有(you)用了，有(you)些水貨筆記本電(dian)(dian)(dian)腦是(shi)(shi)只在(zai)原產(chan)地銷售的(de)(de)，沒有(you)這(zhe)種兼容電(dian)(dian)(dian)壓(ya)設計，甚(shen)至只有(you)110V的(de)(de)單一(yi)輸入電(dian)(dian)(dian)壓(ya)，在(zai)我(wo)國的(de)(de)220V市(shi)電(dian)(dian)(dian)電(dian)(dian)(dian)壓(ya)下插(cha)上就(jiu)會燒(shao)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(yi)(yi)(yi)般電(dian)(dian)(dian)(dian)源(yuan)(yuan)適配器(qi)(qi)標稱(cheng)的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)壓(ya)，是(shi)指開路(lu)輸(shu)出(chu)的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)壓(ya)，也(ye)就(jiu)是(shi)外面不接(jie)任何負載(zai)，沒有(you)電(dian)(dian)(dian)(dian)流輸(shu)出(chu)時候的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)壓(ya)，所(suo)以(yi)(yi)也(ye)可以(yi)(yi)理解為，此電(dian)(dian)(dian)(dian)壓(ya)就(jiu)是(shi)電(dian)(dian)(dian)(dian)源(yuan)(yuan)輸(shu)出(chu)電(dian)(dian)(dian)(dian)壓(ya)的(de)(de)(de)(de)上限。對于電(dian)(dian)(dian)(dian)源(yuan)(yuan)內部使用(yong)了(le)主動穩壓(ya)的(de)(de)(de)(de)元件(jian)的(de)(de)(de)(de)情(qing)況下，即使市(shi)電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)壓(ya)有(you)所(suo)波(bo)動，其輸(shu)出(chu)也(ye)是(shi)恒(heng)定值，象市(shi)面上一(yi)(yi)(yi)般的(de)(de)(de)(de)小變壓(ya)器(qi)(qi)，比如(ru)隨身聽之類配的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)源(yuan)(yuan)，如(ru)果市(shi)電(dian)(dian)(dian)(dian)波(bo)動，該電(dian)(dian)(dian)(dian)源(yuan)(yuan)的(de)(de)(de)(de)輸(shu)出(chu)也(ye)會隨之波(bo)動的(de)(de)(de)(de)。一(yi)(yi)(yi)般來講普通電(dian)(dian)(dian)(dian)源(yuan)(yuan)適配器(qi)(qi)的(de)(de)(de)(de)真正空載(zai)電(dian)(dian)(dian)(dian)壓(ya)也(ye)不一(yi)(yi)(yi)定和標稱(cheng)電(dian)(dian)(dian)(dian)壓(ya)完(wan)全一(yi)(yi)(yi)致，因為電(dian)(dian)(dian)(dian)子元件(jian)的(de)(de)(de)(de)特性(xing)不可能(neng)完(wan)全一(yi)(yi)(yi)致，所(suo)以(yi)(yi)有(you)一(yi)(yi)(yi)定的(de)(de)(de)(de)誤(wu)差(cha)，誤(wu)差(cha)越小，對電(dian)(dian)(dian)(dian)子元件(jian)的(de)(de)(de)(de)一(yi)(yi)(yi)致性(xing)要(yao)求越高，生產的(de)(de)(de)(de)成本(ben)就(jiu)高了(le)，所(suo)以(yi)(yi)價格也(ye)就(jiu)貴一(yi)(yi)(yi)些了(le)。

另(ling)外，關于標稱的(de)(de)電(dian)流(liu)值，無論任何(he)電(dian)源(yuan)都(dou)有(you)一定的(de)(de)內(nei)阻，因此當(dang)電(dian)源(yuan)輸出電(dian)流(liu)的(de)(de)時候，會在(zai)內(nei)部產生壓降(jiang)，導(dao)(dao)致兩件事情，一個(ge)是產生熱量，所以(yi)電(dian)源(yuan)會熱，另(ling)一個(ge)是導(dao)(dao)致輸出電(dian)壓降(jiang)低，相當(dang)于內(nei)部消耗。

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)源適配器電(dian)(dian)壓(ya)一樣，輸出(chu)電(dian)(dian)流(liu)(liu)不(bu)同，能不(bu)能用在同一臺(tai)本本上。基本的(de)(de)(de)(de)原則是大標(biao)稱電(dian)(dian)流(liu)(liu)的(de)(de)(de)(de)電(dian)(dian)源可以(yi)代(dai)替小標(biao)稱電(dian)(dian)流(liu)(liu)的(de)(de)(de)(de)電(dian)(dian)源。估(gu)計有人會這(zhe)樣想(xiang)(xiang)，覺得大標(biao)稱電(dian)(dian)流(liu)(liu)的(de)(de)(de)(de)電(dian)(dian)源會燒壞本本，因(yin)為電(dian)(dian)流(liu)(liu)大了(le)嘛。實(shi)際上電(dian)(dian)流(liu)(liu)多大在電(dian)(dian)壓(ya)相同的(de)(de)(de)(de)情況下取決于負載，想(xiang)(xiang)想(xiang)(xiang)初中的(de)(de)(de)(de)物理就知道了(le)。

當本(ben)(ben)本(ben)(ben)高(gao)負荷運轉(zhuan)的(de)(de)時候(hou)，電(dian)流(liu)(liu)大些，本(ben)(ben)本(ben)(ben)進(jin)入待機(ji)的(de)(de)時候(hou)，電(dian)流(liu)(liu)就(jiu)小(xiao)(xiao)些，大標稱電(dian)流(liu)(liu)的(de)(de)筆記本(ben)(ben)電(dian)源(yuan)(yuan)適配器(qi)有(you)(you)足(zu)夠(gou)的(de)(de)電(dian)流(liu)(liu)余(yu)量(liang)(liang)。反之，有(you)(you)人用(yong)(yong)56w的(de)(de)電(dian)源(yuan)(yuan)代替(ti)72w的(de)(de)用(yong)(yong)起來也沒(mei)什么問(wen)題，原因是(shi)(shi)通常電(dian)源(yuan)(yuan)適配器(qi)的(de)(de)設(she)計(ji)留有(you)(you)一定的(de)(de)余(yu)量(liang)(liang)，負載功(gong)率都要小(xiao)(xiao)于電(dian)源(yuan)(yuan)功(gong)率，所以(yi)這種代替(ti)在一般(ban)使(shi)用(yong)(yong)上(shang)是(shi)(shi)可行的(de)(de)，但是(shi)(shi)剩余(yu)的(de)(de)電(dian)源(yuan)(yuan)功(gong)率余(yu)量(liang)(liang)就(jiu)很少了(le)，一旦你(ni)的(de)(de)本(ben)(ben)本(ben)(ben)接了(le)很多外設(she)，比如兩塊usb硬盤(pan)，然后cpu全速運轉(zhuan)，再有(you)(you)一個底座，上(shang)面來個光驅全速讀盤(pan)，再加上(shang)同時給電(dian)池(chi)充電(dian)，估計(ji)就(jiu)危險了(le)，要隨時用(yong)(yong)手摸摸你(ni)的(de)(de)電(dian)源(yuan)(yuan)是(shi)(shi)不是(shi)(shi)已經可以(yi)煮雞(ji)蛋了(le)。所以(yi)最好不要用(yong)(yong)小(xiao)(xiao)電(dian)流(liu)(liu)電(dian)源(yuan)(yuan)代替(ti)大電(dian)流(liu)(liu)電(dian)源(yuan)(yuan)。

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(bu)(bu)要懷(huai)疑你的電(dian)(dian)源(yuan)有問題，先看(kan)看(kan)你的本(ben)本(ben)在(zai)干(gan)什么，是(shi)不(bu)(bu)是(shi)像上面說的兩(liang)塊USB硬(ying)盤(pan)，CPU全(quan)速運轉，硬(ying)盤(pan)瘋(feng)狂(kuang)讀寫(xie)，光(guang)驅(qu)全(quan)速讀盤(pan)，同時給電(dian)(dian)池(chi)充電(dian)(dian)，大聲(sheng)放著(zhu)音樂，屏幕亮(liang)度最大，無線(xian)網卡一(yi)直在(zai)偵測信(xin)號(hao)等(deng)等(deng)，善用電(dian)(dian)源(yuan)管理，根據任務合(he)理調整本(ben)本(ben)的工(gong)作狀態是(shi)很重要的。

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?

首先，要(yao)知道的(de)是(shi)，電(dian)源適配器給本本供電(dian)與電(dian)池給本本供電(dian)是(shi)不同的(de)。

電(dian)(dian)(dian)池(chi)(chi)(chi)供(gong)電(dian)(dian)(dian)，電(dian)(dian)(dian)池(chi)(chi)(chi)的輸(shu)出是純(chun)直流，干凈得很(hen)，電(dian)(dian)(dian)池(chi)(chi)(chi)的電(dian)(dian)(dian)壓(ya)既不可能也(ye)不需要設計得很(hen)高(gao)，鋰電(dian)(dian)(dian)池(chi)(chi)(chi)的化學(xue)特性決定了(le)一節電(dian)(dian)(dian)芯的輸(shu)出電(dian)(dian)(dian)壓(ya)只(zhi)能在3.6V左右，所以很(hen)多電(dian)(dian)(dian)池(chi)(chi)(chi)都是采用三級串聯的方式，10.8V也(ye)就成了(le)很(hen)流行的電(dian)(dian)(dian)池(chi)(chi)(chi)電(dian)(dian)(dian)壓(ya)。有些電(dian)(dian)(dian)池(chi)(chi)(chi)的標稱(cheng)值比3.6V的整數倍(bei)稍大一些，比如(ru)3.7V或者11.2V等等，其實是為了(le)保護電(dian)(dian)(dian)池(chi)(chi)(chi)。

電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)適配(pei)器供電(dian)(dian)(dian)(dian)(dian)(dian)(dian)，情況就(jiu)復(fu)雜一些，首先需要對加入電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓進(jin)行進(jin)一步的(de)(de)穩壓濾波，以(yi)保證在(zai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)性(xing)能(neng)不很(hen)(hen)好的(de)(de)情況下穩定工(gong)作，穩壓后的(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓分城兩個部(bu)分，一路給本本工(gong)作供電(dian)(dian)(dian)(dian)(dian)(dian)(dian)，另一路給電(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)充電(dian)(dian)(dian)(dian)(dian)(dian)(dian)，給本本供電(dian)(dian)(dian)(dian)(dian)(dian)(dian)的(de)(de)那部(bu)分同電(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)供電(dian)(dian)(dian)(dian)(dian)(dian)(dian)的(de)(de)時(shi)候(hou)相同，而給電(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)充電(dian)(dian)(dian)(dian)(dian)(dian)(dian)的(de)(de)那部(bu)分需要通過電(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)的(de)(de)充電(dian)(dian)(dian)(dian)(dian)(dian)(dian)控(kong)(kong)制電(dian)(dian)(dian)(dian)(dian)(dian)(dian)路才可以(yi)加在(zai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)芯(xin)上，控(kong)(kong)制電(dian)(dian)(dian)(dian)(dian)(dian)(dian)路可以(yi)很(hen)(hen)復(fu)雜，所以(yi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓必須大于電(dian)(dian)(dian)(dian)(dian)(dian)(dian)芯(xin)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓才有充分的(de)(de)能(neng)力供應給充電(dian)(dian)(dian)(dian)(dian)(dian)(dian)控(kong)(kong)制電(dian)(dian)(dian)(dian)(dian)(dian)(dian)路的(de)(de)各單元(yuan)。最后真(zhen)正加到電(dian)(dian)(dian)(dian)(dian)(dian)(dian)芯(xin)上的(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓決不會是你(ni)的(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)標(biao)稱的(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓。放心好了。

結語

電(dian)源(yuan)(yuan)適配(pei)器的(de)應用廣泛，并且具有持續增長的(de)趨(qu)勢，電(dian)源(yuan)(yuan)生產(chan)廠(chang)家(jia)紛紛投(tou)入到對電(dian)源(yuan)(yuan)適配(pei)器的(de)研發(fa)當中(zhong)。由(you)于設(she)備和技術的(de)差(cha)異，導致(zhi)電(dian)源(yuan)(yuan)適配(pei)器的(de)產(chan)品性能和產(chan)品質量有很大的(de)差(cha)別，小編(bian)在這里提醒大家(jia)，選擇電(dian)源(yuan)(yuan)適配(pei)器時一定要謹慎。