電源適配器產品性能 電源適配器的(de)輸出(chu)電流是多(duo)少

1、電源適配器的性能

如圖所(suo)示，在電(dian)(dian)源適配器(下面(mian)稱(cheng)adapter)的(de)(de)(de)標簽上(shang)面(mian)一(yi)(yi)般會有幾項是(shi)(shi)(shi)需要注意(yi)的(de)(de)(de)。第一(yi)(yi)，是(shi)(shi)(shi)adapter的(de)(de)(de)型號，例如這(zhe)(zhe)顆(ke)adapter的(de)(de)(de)型號是(shi)(shi)(shi)XVE-120100，它(ta)告訴了我們幾個(ge)信息，就(jiu)是(shi)(shi)(shi)它(ta)的(de)(de)(de)廠(chang)商(shang)、瓦數等，XVE開頭的(de)(de)(de)一(yi)(yi)般就(jiu)是(shi)(shi)(shi)##公(gong)司代(dai)號，120100就(jiu)是(shi)(shi)(shi)說明這(zhe)(zhe)個(ge)adapter是(shi)(shi)(shi)12W的(de)(de)(de)，050200的(de)(de)(de)就(jiu)是(shi)(shi)(shi)10W的(de)(de)(de);第二就(jiu)是(shi)(shi)(shi)adapter的(de)(de)(de)INPUT(輸(shu)入)，在中(zhong)國通用的(de)(de)(de)一(yi)(yi)般是(shi)(shi)(shi)100-240V~50-60Hz，這(zhe)(zhe)說明這(zhe)(zhe)顆(ke)adapter可(ke)以在100V-240V的(de)(de)(de)電(dian)(dian)壓(ya)下面(mian)正常工作(zuo);第三就(jiu)是(shi)(shi)(shi)adapter的(de)(de)(de)OUTPUT(輸(shu)出)，兩個(ge)數字可(ke)以很快速(su)的(de)(de)(de)算出這(zhe)(zhe)個(ge)adapter得瓦數，例如這(zhe)(zhe)個(ge)adapter，電(dian)(dian)壓(ya)12V*電(dian)(dian)流(liu)1A=12W(功率)，說明這(zhe)(zhe)個(ge)電(dian)(dian)源就(jiu)是(shi)(shi)(shi)12W的(de)(de)(de)adapter。

多數(shu)(shu)筆(bi)(bi)記本電(dian)腦的(de)電(dian)源(yuan)適配器可以(yi)適合用於100～240V交流電(dian)(50/60Hz)。基本上大(da)部份的(de)筆(bi)(bi)記本電(dian)腦都把(ba)電(dian)源(yuan)外置(zhi)，用一條電(dian)源(yuan)線和主(zhu)機連接(jie)，這樣可以(yi)縮(suo)小主(zhu)機的(de)體積和重量(liang)，只有極少數(shu)(shu)的(de)機型把(ba)電(dian)源(yuan)內置(zhi)在主(zhu)機內。

在(zai)電(dian)(dian)源(yuan)適配(pei)器(qi)上都有(you)(you)一個銘牌，上面標示著功率，輸(shu)入(ru)輸(shu)出電(dian)(dian)壓和電(dian)(dian)流量(liang)等指標，特別要注意輸(shu)入(ru)電(dian)(dian)壓的范圍，這(zhe)就(jiu)是(shi)所謂的“旅行電(dian)(dian)源(yuan)適配(pei)器(qi)”，如果到市電(dian)(dian)電(dian)(dian)壓只(zhi)有(you)(you)110V的國家時(shi)，這(zhe)個特性(xing)就(jiu)很有(you)(you)用了，有(you)(you)些水貨筆記(ji)本(ben)電(dian)(dian)腦是(shi)只(zhi)在(zai)原產地銷售(shou)的，沒有(you)(you)這(zhe)種兼容電(dian)(dian)壓設(she)計，甚(shen)至只(zhi)有(you)(you)110V的單一輸(shu)入(ru)電(dian)(dian)壓，在(zai)我國的220V市電(dian)(dian)電(dian)(dian)壓下插上就(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?

首先，一(yi)般電(dian)(dian)(dian)源(yuan)適(shi)配器標稱(cheng)的(de)(de)(de)電(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)，是指開路(lu)輸(shu)(shu)出的(de)(de)(de)電(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)，也就(jiu)是外面不(bu)(bu)接任何負載，沒有電(dian)(dian)(dian)流輸(shu)(shu)出時候的(de)(de)(de)電(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)，所(suo)(suo)以(yi)也可以(yi)理解為，此(ci)電(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)就(jiu)是電(dian)(dian)(dian)源(yuan)輸(shu)(shu)出電(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)的(de)(de)(de)上(shang)(shang)限。對(dui)于(yu)電(dian)(dian)(dian)源(yuan)內(nei)部(bu)使用了主動(dong)(dong)穩壓(ya)(ya)(ya)(ya)(ya)的(de)(de)(de)元件的(de)(de)(de)情況下(xia)，即使市電(dian)(dian)(dian)電(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)有所(suo)(suo)波(bo)動(dong)(dong)，其輸(shu)(shu)出也是恒(heng)定(ding)值，象市面上(shang)(shang)一(yi)般的(de)(de)(de)小(xiao)(xiao)變壓(ya)(ya)(ya)(ya)(ya)器，比如(ru)隨(sui)身聽之類配的(de)(de)(de)電(dian)(dian)(dian)源(yuan)，如(ru)果(guo)市電(dian)(dian)(dian)波(bo)動(dong)(dong)，該(gai)電(dian)(dian)(dian)源(yuan)的(de)(de)(de)輸(shu)(shu)出也會隨(sui)之波(bo)動(dong)(dong)的(de)(de)(de)。一(yi)般來講普通電(dian)(dian)(dian)源(yuan)適(shi)配器的(de)(de)(de)真正(zheng)空載電(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)也不(bu)(bu)一(yi)定(ding)和標稱(cheng)電(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)完全(quan)一(yi)致，因為電(dian)(dian)(dian)子元件的(de)(de)(de)特(te)性(xing)不(bu)(bu)可能(neng)完全(quan)一(yi)致，所(suo)(suo)以(yi)有一(yi)定(ding)的(de)(de)(de)誤差(cha)，誤差(cha)越小(xiao)(xiao)，對(dui)電(dian)(dian)(dian)子元件的(de)(de)(de)一(yi)致性(xing)要求(qiu)越高，生產的(de)(de)(de)成(cheng)本就(jiu)高了，所(suo)(suo)以(yi)價格也就(jiu)貴一(yi)些了。

另外，關于(yu)標稱(cheng)的電(dian)流值，無論任何電(dian)源(yuan)都有一(yi)(yi)定的內(nei)(nei)阻，因此當電(dian)源(yuan)輸(shu)出(chu)電(dian)流的時候，會在(zai)內(nei)(nei)部產生壓降，導致兩件(jian)事情，一(yi)(yi)個是產生熱(re)量，所以電(dian)源(yuan)會熱(re)，另一(yi)(yi)個是導致輸(shu)出(chu)電(dian)壓降低，相當于(yu)內(nei)(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?

電源適配器電壓(ya)一樣(yang)，輸出電流(liu)不(bu)同，能不(bu)能用在同一臺本(ben)本(ben)上。基(ji)本(ben)的原(yuan)則是大(da)標(biao)稱電流(liu)的電源可以(yi)代替小(xiao)標(biao)稱電流(liu)的電源。估計有人(ren)會(hui)這樣(yang)想，覺得大(da)標(biao)稱電流(liu)的電源會(hui)燒壞本(ben)本(ben)，因為電流(liu)大(da)了(le)嘛。實際上電流(liu)多大(da)在電壓(ya)相同的情況下(xia)取決于負載(zai)，想想初中的物理就知道了(le)。

當本(ben)本(ben)高負荷運轉的時候(hou)，電(dian)(dian)(dian)流(liu)(liu)大(da)些(xie)，本(ben)本(ben)進入待機(ji)的時候(hou)，電(dian)(dian)(dian)流(liu)(liu)就(jiu)小些(xie)，大(da)標稱電(dian)(dian)(dian)流(liu)(liu)的筆(bi)記本(ben)電(dian)(dian)(dian)源(yuan)適(shi)配器有足(zu)夠的電(dian)(dian)(dian)流(liu)(liu)余量(liang)(liang)。反之，有人用56w的電(dian)(dian)(dian)源(yuan)代替(ti)72w的用起來也沒(mei)什么問題，原(yuan)因是(shi)(shi)通(tong)常電(dian)(dian)(dian)源(yuan)適(shi)配器的設計留有一(yi)定的余量(liang)(liang)，負載功(gong)率都(dou)要(yao)小于電(dian)(dian)(dian)源(yuan)功(gong)率，所以這種代替(ti)在(zai)一(yi)般使用上是(shi)(shi)可行(xing)的，但(dan)是(shi)(shi)剩(sheng)余的電(dian)(dian)(dian)源(yuan)功(gong)率余量(liang)(liang)就(jiu)很(hen)少(shao)了，一(yi)旦你的本(ben)本(ben)接了很(hen)多外(wai)設，比如(ru)兩塊usb硬盤(pan)，然后cpu全速運轉，再有一(yi)個(ge)(ge)底(di)座，上面來個(ge)(ge)光驅(qu)全速讀盤(pan)，再加上同時給電(dian)(dian)(dian)池充電(dian)(dian)(dian)，估計就(jiu)危險了，要(yao)隨時用手摸(mo)摸(mo)你的電(dian)(dian)(dian)源(yuan)是(shi)(shi)不是(shi)(shi)已經可以煮雞蛋了。所以最好(hao)不要(yao)用小電(dian)(dian)(dian)流(liu)(liu)電(dian)(dian)(dian)源(yuan)代替(ti)大(da)電(dian)(dian)(dian)流(liu)(liu)電(dian)(dian)(dian)源(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)要(yao)懷(huai)疑你的電源(yuan)有問(wen)題，先看看你的本(ben)本(ben)在干(gan)什么，是(shi)不(bu)是(shi)像上面說(shuo)的兩塊(kuai)USB硬(ying)盤，CPU全速(su)運轉，硬(ying)盤瘋狂讀(du)寫，光(guang)驅(qu)全速(su)讀(du)盤，同時給(gei)電池充電，大聲放著(zhu)音樂，屏幕亮度最大，無線網卡一直(zhi)在偵測(ce)信號等(deng)等(deng)，善用電源(yuan)管(guan)理，根據任務合理調(diao)整本(ben)本(ben)的工作狀態是(shi)很重要(yao)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(shou)先，要知道的(de)是，電(dian)(dian)源適(shi)配器給本本供(gong)電(dian)(dian)與(yu)電(dian)(dian)池(chi)給本本供(gong)電(dian)(dian)是不同的(de)。

電(dian)池供電(dian)，電(dian)池的(de)輸(shu)出是(shi)純直(zhi)流，干(gan)凈得很(hen)，電(dian)池的(de)電(dian)壓既不可能也不需要設計(ji)得很(hen)高(gao)，鋰電(dian)池的(de)化學(xue)特性決(jue)定了一(yi)節電(dian)芯的(de)輸(shu)出電(dian)壓只(zhi)能在3.6V左右，所(suo)以(yi)很(hen)多電(dian)池都(dou)是(shi)采用三級(ji)串(chuan)聯(lian)的(de)方式，10.8V也就(jiu)成了很(hen)流行(xing)的(de)電(dian)池電(dian)壓。有(you)些電(dian)池的(de)標(biao)稱值比(bi)3.6V的(de)整數倍稍(shao)大(da)一(yi)些，比(bi)如(ru)3.7V或者11.2V等等，其實是(shi)為(wei)了保(bao)護電(dian)池。

電(dian)(dian)(dian)(dian)(dian)(dian)源適(shi)配器供(gong)(gong)電(dian)(dian)(dian)(dian)(dian)(dian)，情況就復雜(za)一(yi)些(xie)，首先需要對(dui)加(jia)入電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)進(jin)行(xing)進(jin)一(yi)步的(de)(de)穩(wen)壓(ya)(ya)濾波(bo)，以(yi)保證(zheng)在電(dian)(dian)(dian)(dian)(dian)(dian)源性能(neng)(neng)不很(hen)好(hao)的(de)(de)情況下穩(wen)定工(gong)作，穩(wen)壓(ya)(ya)后的(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)分(fen)城兩(liang)個部分(fen)，一(yi)路(lu)(lu)給(gei)本(ben)(ben)本(ben)(ben)工(gong)作供(gong)(gong)電(dian)(dian)(dian)(dian)(dian)(dian)，另一(yi)路(lu)(lu)給(gei)電(dian)(dian)(dian)(dian)(dian)(dian)池(chi)充(chong)電(dian)(dian)(dian)(dian)(dian)(dian)，給(gei)本(ben)(ben)本(ben)(ben)供(gong)(gong)電(dian)(dian)(dian)(dian)(dian)(dian)的(de)(de)那(nei)部分(fen)同電(dian)(dian)(dian)(dian)(dian)(dian)池(chi)供(gong)(gong)電(dian)(dian)(dian)(dian)(dian)(dian)的(de)(de)時候相同，而給(gei)電(dian)(dian)(dian)(dian)(dian)(dian)池(chi)充(chong)電(dian)(dian)(dian)(dian)(dian)(dian)的(de)(de)那(nei)部分(fen)需要通(tong)過電(dian)(dian)(dian)(dian)(dian)(dian)池(chi)的(de)(de)充(chong)電(dian)(dian)(dian)(dian)(dian)(dian)控制(zhi)電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)才(cai)可(ke)以(yi)加(jia)在電(dian)(dian)(dian)(dian)(dian)(dian)芯上(shang)，控制(zhi)電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)可(ke)以(yi)很(hen)復雜(za)，所以(yi)電(dian)(dian)(dian)(dian)(dian)(dian)源電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)必須大于(yu)電(dian)(dian)(dian)(dian)(dian)(dian)芯電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)才(cai)有充(chong)分(fen)的(de)(de)能(neng)(neng)力供(gong)(gong)應給(gei)充(chong)電(dian)(dian)(dian)(dian)(dian)(dian)控制(zhi)電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)的(de)(de)各單元。最后真正加(jia)到電(dian)(dian)(dian)(dian)(dian)(dian)芯上(shang)的(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)決不會(hui)是(shi)你的(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)源標稱的(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)。放(fang)心好(hao)了。

結語

電(dian)源(yuan)適(shi)(shi)配(pei)器(qi)(qi)的(de)(de)應(ying)用廣(guang)泛(fan)，并且具有(you)持續增長的(de)(de)趨勢，電(dian)源(yuan)生(sheng)產廠(chang)家紛(fen)紛(fen)投入到對(dui)電(dian)源(yuan)適(shi)(shi)配(pei)器(qi)(qi)的(de)(de)研發(fa)當(dang)中。由于設備和技術的(de)(de)差異，導(dao)致(zhi)電(dian)源(yuan)適(shi)(shi)配(pei)器(qi)(qi)的(de)(de)產品性能和產品質(zhi)量有(you)很大的(de)(de)差別，小編在這(zhe)里提醒大家，選擇電(dian)源(yuan)適(shi)(shi)配(pei)器(qi)(qi)時一定要謹慎。