電源適配器產品性能 電源適配器的輸出電流(liu)是多少

1、電源適配器的性能

如(ru)(ru)圖所示(shi)，在(zai)(zai)電(dian)源適配器(下面(mian)稱(cheng)adapter)的(de)(de)標簽(qian)上面(mian)一(yi)般(ban)會有幾項是(shi)(shi)(shi)(shi)需(xu)要注(zhu)意(yi)的(de)(de)。第(di)一(yi)，是(shi)(shi)(shi)(shi)adapter的(de)(de)型號，例(li)如(ru)(ru)這(zhe)(zhe)顆adapter的(de)(de)型號是(shi)(shi)(shi)(shi)XVE-120100，它(ta)告訴(su)了我們幾個(ge)信息，就(jiu)(jiu)是(shi)(shi)(shi)(shi)它(ta)的(de)(de)廠商、瓦(wa)數(shu)等，XVE開頭的(de)(de)一(yi)般(ban)就(jiu)(jiu)是(shi)(shi)(shi)(shi)##公司代號，120100就(jiu)(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)，050200的(de)(de)就(jiu)(jiu)是(shi)(shi)(shi)(shi)10W的(de)(de);第(di)二就(jiu)(jiu)是(shi)(shi)(shi)(shi)adapter的(de)(de)INPUT(輸(shu)入)，在(zai)(zai)中國通(tong)用(yong)的(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(zai)(zai)100V-240V的(de)(de)電(dian)壓下面(mian)正常工作;第(di)三就(jiu)(jiu)是(shi)(shi)(shi)(shi)adapter的(de)(de)OUTPUT(輸(shu)出(chu))，兩個(ge)數(shu)字可以很快速的(de)(de)算出(chu)這(zhe)(zhe)個(ge)adapter得瓦(wa)數(shu)，例(li)如(ru)(ru)這(zhe)(zhe)個(ge)adapter，電(dian)壓12V*電(dian)流1A=12W(功率)，說(shuo)明(ming)這(zhe)(zhe)個(ge)電(dian)源就(jiu)(jiu)是(shi)(shi)(shi)(shi)12W的(de)(de)adapter。

多數筆記本電腦的(de)電源(yuan)(yuan)適配器(qi)可以適合用於100～240V交流電(50/60Hz)。基本上大部份(fen)的(de)筆記本電腦都把(ba)電源(yuan)(yuan)外(wai)置，用一條電源(yuan)(yuan)線和(he)(he)主機(ji)連接，這樣可以縮小主機(ji)的(de)體(ti)積和(he)(he)重(zhong)量，只有極少數的(de)機(ji)型把(ba)電源(yuan)(yuan)內置在主機(ji)內。

在(zai)(zai)電(dian)源(yuan)適配(pei)器上(shang)都有一個(ge)銘牌，上(shang)面標示著功率，輸(shu)(shu)入(ru)(ru)(ru)輸(shu)(shu)出電(dian)壓和電(dian)流量等指(zhi)標，特別要注意輸(shu)(shu)入(ru)(ru)(ru)電(dian)壓的(de)范圍(wei)，這(zhe)就(jiu)是(shi)所謂的(de)“旅行電(dian)源(yuan)適配(pei)器”，如(ru)果到市(shi)電(dian)電(dian)壓只(zhi)有110V的(de)國家(jia)時，這(zhe)個(ge)特性就(jiu)很有用(yong)了，有些水貨筆(bi)記本(ben)電(dian)腦是(shi)只(zhi)在(zai)(zai)原產地銷售(shou)的(de)，沒有這(zhe)種兼容電(dian)壓設計，甚至只(zhi)有110V的(de)單一輸(shu)(shu)入(ru)(ru)(ru)電(dian)壓，在(zai)(zai)我國的(de)220V市(shi)電(dian)電(dian)壓下插上(shang)就(jiu)會(hui)燒毀。

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(shou)先，一(yi)(yi)(yi)般(ban)電(dian)源(yuan)(yuan)適配(pei)(pei)器標(biao)稱(cheng)(cheng)的(de)(de)電(dian)壓(ya)(ya)，是指開路(lu)輸(shu)出(chu)(chu)的(de)(de)電(dian)壓(ya)(ya)，也(ye)就是外面不接任何負載(zai)，沒有(you)電(dian)流輸(shu)出(chu)(chu)時(shi)候的(de)(de)電(dian)壓(ya)(ya)，所(suo)(suo)(suo)以(yi)也(ye)可(ke)以(yi)理解為(wei)，此電(dian)壓(ya)(ya)就是電(dian)源(yuan)(yuan)輸(shu)出(chu)(chu)電(dian)壓(ya)(ya)的(de)(de)上限。對(dui)于電(dian)源(yuan)(yuan)內(nei)部使用了(le)主動(dong)穩壓(ya)(ya)的(de)(de)元(yuan)件的(de)(de)情況下(xia)，即使市電(dian)電(dian)壓(ya)(ya)有(you)所(suo)(suo)(suo)波(bo)動(dong)，其輸(shu)出(chu)(chu)也(ye)是恒定值，象市面上一(yi)(yi)(yi)般(ban)的(de)(de)小(xiao)變壓(ya)(ya)器，比如隨身(shen)聽之類配(pei)(pei)的(de)(de)電(dian)源(yuan)(yuan)，如果市電(dian)波(bo)動(dong)，該電(dian)源(yuan)(yuan)的(de)(de)輸(shu)出(chu)(chu)也(ye)會隨之波(bo)動(dong)的(de)(de)。一(yi)(yi)(yi)般(ban)來(lai)講(jiang)普通電(dian)源(yuan)(yuan)適配(pei)(pei)器的(de)(de)真正空載(zai)電(dian)壓(ya)(ya)也(ye)不一(yi)(yi)(yi)定和標(biao)稱(cheng)(cheng)電(dian)壓(ya)(ya)完全一(yi)(yi)(yi)致，因(yin)為(wei)電(dian)子元(yuan)件的(de)(de)特(te)性(xing)不可(ke)能完全一(yi)(yi)(yi)致，所(suo)(suo)(suo)以(yi)有(you)一(yi)(yi)(yi)定的(de)(de)誤差，誤差越小(xiao)，對(dui)電(dian)子元(yuan)件的(de)(de)一(yi)(yi)(yi)致性(xing)要求越高，生產的(de)(de)成本就高了(le)，所(suo)(suo)(suo)以(yi)價格也(ye)就貴一(yi)(yi)(yi)些(xie)了(le)。

另外，關于(yu)標稱的(de)電(dian)流值，無論任何電(dian)源都有一定的(de)內(nei)阻(zu)，因(yin)此當電(dian)源輸出(chu)電(dian)流的(de)時候，會在內(nei)部產(chan)生壓(ya)降(jiang)，導致兩件事情，一個是(shi)(shi)產(chan)生熱(re)量，所以電(dian)源會熱(re)，另一個是(shi)(shi)導致輸出(chu)電(dian)壓(ya)降(jiang)低，相當于(yu)內(nei)部消耗(hao)。

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(yuan)適配(pei)器電(dian)(dian)壓(ya)一樣，輸出電(dian)(dian)流(liu)不同(tong)(tong)，能(neng)不能(neng)用在(zai)同(tong)(tong)一臺本(ben)(ben)本(ben)(ben)上(shang)。基本(ben)(ben)的(de)原則是大(da)標(biao)稱(cheng)電(dian)(dian)流(liu)的(de)電(dian)(dian)源(yuan)可(ke)以代替小標(biao)稱(cheng)電(dian)(dian)流(liu)的(de)電(dian)(dian)源(yuan)。估計有人會(hui)這樣想，覺(jue)得大(da)標(biao)稱(cheng)電(dian)(dian)流(liu)的(de)電(dian)(dian)源(yuan)會(hui)燒壞本(ben)(ben)本(ben)(ben)，因為(wei)電(dian)(dian)流(liu)大(da)了(le)嘛。實際上(shang)電(dian)(dian)流(liu)多大(da)在(zai)電(dian)(dian)壓(ya)相(xiang)同(tong)(tong)的(de)情況下取決于負載，想想初中的(de)物理就知道(dao)了(le)。

當本(ben)(ben)(ben)本(ben)(ben)(ben)高負荷(he)運(yun)轉的(de)(de)時(shi)候，電(dian)(dian)流大些，本(ben)(ben)(ben)本(ben)(ben)(ben)進入待(dai)機的(de)(de)時(shi)候，電(dian)(dian)流就(jiu)小(xiao)些，大標稱(cheng)電(dian)(dian)流的(de)(de)筆記本(ben)(ben)(ben)電(dian)(dian)源適配器有足(zu)夠的(de)(de)電(dian)(dian)流余(yu)(yu)量(liang)。反之，有人用(yong)56w的(de)(de)電(dian)(dian)源代(dai)(dai)替(ti)72w的(de)(de)用(yong)起來(lai)也沒什么問題(ti)，原因是(shi)(shi)通常電(dian)(dian)源適配器的(de)(de)設(she)計(ji)留(liu)有一(yi)(yi)定的(de)(de)余(yu)(yu)量(liang)，負載功率都要(yao)(yao)小(xiao)于電(dian)(dian)源功率，所以(yi)(yi)這(zhe)種代(dai)(dai)替(ti)在(zai)一(yi)(yi)般使用(yong)上是(shi)(shi)可(ke)行(xing)的(de)(de)，但是(shi)(shi)剩(sheng)余(yu)(yu)的(de)(de)電(dian)(dian)源功率余(yu)(yu)量(liang)就(jiu)很少(shao)了(le)，一(yi)(yi)旦你的(de)(de)本(ben)(ben)(ben)本(ben)(ben)(ben)接了(le)很多外(wai)設(she)，比如(ru)兩塊(kuai)usb硬盤(pan)(pan)，然(ran)后cpu全速運(yun)轉，再有一(yi)(yi)個(ge)底座，上面來(lai)個(ge)光(guang)驅全速讀(du)盤(pan)(pan)，再加上同時(shi)給電(dian)(dian)池充電(dian)(dian)，估計(ji)就(jiu)危險了(le)，要(yao)(yao)隨時(shi)用(yong)手摸摸你的(de)(de)電(dian)(dian)源是(shi)(shi)不(bu)是(shi)(shi)已(yi)經可(ke)以(yi)(yi)煮(zhu)雞(ji)蛋(dan)了(le)。所以(yi)(yi)最(zui)好不(bu)要(yao)(yao)用(yong)小(xiao)電(dian)(dian)流電(dian)(dian)源代(dai)(dai)替(ti)大電(dian)(dian)流電(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(xian)不要懷(huai)疑你的(de)電(dian)(dian)源(yuan)有問題，先(xian)看(kan)看(kan)你的(de)本本在干什么，是(shi)不是(shi)像上(shang)面說的(de)兩塊USB硬盤(pan)(pan)(pan)，CPU全速(su)運轉，硬盤(pan)(pan)(pan)瘋狂讀(du)(du)寫，光驅(qu)全速(su)讀(du)(du)盤(pan)(pan)(pan)，同時給電(dian)(dian)池充電(dian)(dian)，大聲放(fang)著音樂，屏(ping)幕亮(liang)度最大，無線網卡一直在偵測(ce)信號等等，善用電(dian)(dian)源(yuan)管理，根據任務合理調整本本的(de)工作狀態是(shi)很重要的(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，要知道的(de)(de)是(shi)，電源適配器給本本供電與電池給本本供電是(shi)不(bu)同的(de)(de)。

電(dian)(dian)(dian)池(chi)供電(dian)(dian)(dian)，電(dian)(dian)(dian)池(chi)的輸出是純(chun)直流，干凈(jing)得(de)很(hen)，電(dian)(dian)(dian)池(chi)的電(dian)(dian)(dian)壓(ya)既不可能也不需要設計(ji)得(de)很(hen)高(gao)，鋰電(dian)(dian)(dian)池(chi)的化學特性決定了(le)一(yi)節電(dian)(dian)(dian)芯的輸出電(dian)(dian)(dian)壓(ya)只能在(zai)3.6V左右(you)，所以很(hen)多電(dian)(dian)(dian)池(chi)都是采用三級(ji)串聯的方式，10.8V也就成了(le)很(hen)流行的電(dian)(dian)(dian)池(chi)電(dian)(dian)(dian)壓(ya)。有些電(dian)(dian)(dian)池(chi)的標(biao)稱值比(bi)3.6V的整數(shu)倍稍大一(yi)些，比(bi)如3.7V或者(zhe)11.2V等等，其實是為了(le)保護(hu)電(dian)(dian)(dian)池(chi)。

電(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)適配(pei)器供(gong)電(dian)(dian)(dian)(dian)(dian)(dian)，情(qing)況(kuang)(kuang)就復雜一些，首先需(xu)要對加(jia)(jia)(jia)入電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)進(jin)行進(jin)一步的(de)(de)(de)穩(wen)壓(ya)(ya)濾波，以(yi)保證在(zai)電(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)性能不很(hen)好的(de)(de)(de)情(qing)況(kuang)(kuang)下穩(wen)定工(gong)(gong)作(zuo)(zuo)，穩(wen)壓(ya)(ya)后的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)分(fen)城兩個部分(fen)，一路給本(ben)本(ben)工(gong)(gong)作(zuo)(zuo)供(gong)電(dian)(dian)(dian)(dian)(dian)(dian)，另一路給電(dian)(dian)(dian)(dian)(dian)(dian)池(chi)充(chong)電(dian)(dian)(dian)(dian)(dian)(dian)，給本(ben)本(ben)供(gong)電(dian)(dian)(dian)(dian)(dian)(dian)的(de)(de)(de)那部分(fen)同電(dian)(dian)(dian)(dian)(dian)(dian)池(chi)供(gong)電(dian)(dian)(dian)(dian)(dian)(dian)的(de)(de)(de)時候相同，而(er)給電(dian)(dian)(dian)(dian)(dian)(dian)池(chi)充(chong)電(dian)(dian)(dian)(dian)(dian)(dian)的(de)(de)(de)那部分(fen)需(xu)要通過(guo)電(dian)(dian)(dian)(dian)(dian)(dian)池(chi)的(de)(de)(de)充(chong)電(dian)(dian)(dian)(dian)(dian)(dian)控(kong)制電(dian)(dian)(dian)(dian)(dian)(dian)路才可(ke)以(yi)加(jia)(jia)(jia)在(zai)電(dian)(dian)(dian)(dian)(dian)(dian)芯(xin)上(shang)，控(kong)制電(dian)(dian)(dian)(dian)(dian)(dian)路可(ke)以(yi)很(hen)復雜，所(suo)以(yi)電(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)必須(xu)大于電(dian)(dian)(dian)(dian)(dian)(dian)芯(xin)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)才有(you)充(chong)分(fen)的(de)(de)(de)能力供(gong)應給充(chong)電(dian)(dian)(dian)(dian)(dian)(dian)控(kong)制電(dian)(dian)(dian)(dian)(dian)(dian)路的(de)(de)(de)各(ge)單元。最后真正(zheng)加(jia)(jia)(jia)到電(dian)(dian)(dian)(dian)(dian)(dian)芯(xin)上(shang)的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)決不會是你的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)標稱(cheng)的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)。放心好了。

結語

電(dian)(dian)源(yuan)適配器的(de)(de)應(ying)用廣泛，并且具有持續增長的(de)(de)趨勢，電(dian)(dian)源(yuan)生(sheng)產廠家(jia)紛紛投入(ru)到(dao)對電(dian)(dian)源(yuan)適配器的(de)(de)研發當中。由于設備和技(ji)術的(de)(de)差(cha)異，導致電(dian)(dian)源(yuan)適配器的(de)(de)產品性能和產品質量有很大的(de)(de)差(cha)別，小(xiao)編在這里提醒大家(jia)，選擇電(dian)(dian)源(yuan)適配器時一定要謹慎。