大家好今(jin)天來介(jie)紹led燈珠充電(dian)電(dian)路(充電(dian)led手電(dian)筒如(ru)何維修)的問題(ti)，以下(xia)是小編對此(ci)問題(ti)的歸納整(zheng)理，來看(kan)看(kan)吧。

文章目錄列表:

• 1、LED手電筒充電時候燒了怎么維修
• 2、12個led燈珠手電的充電電路能給18650電池充電嗎
• 3、led燈珠怎么用電池供電
• 4、用5v600mA的手機充電器接兩個串聯LED貼片燈珠需要串一個多大的限流電阻
• 5、5v充電器接3vled燈珠方法

LED手電筒充電時候燒了怎么維修

LED充(chong)電(dian)式(shi)手電(dian)筒(tong)一般內置4V蓄電(dian)池(chi)，并采用簡單的(de)阻容降壓電(dian)路來給蓄電(dian)池(chi)充(chong)電(dian)，使用時故(gu)障率(lv)較高。下面我(wo)們結合這(zhe)種(zhong)手電(dian)筒(tong)的(de)電(dian)路原(yuan)理(li)圖(tu)來介紹一下如何修理(li)這(zhe)種(zhong)手電(dian)筒(tong)。▲ 充(chong)電(dian)式(shi)LED手電(dian)筒(tong)電(dian)路原(yuan)理(li)圖(tu)。

上圖為(wei)(wei)普通的(de)(de)充(chong)電(dian)(dian)(dian)(dian)式LED手(shou)(shou)電(dian)(dian)(dian)(dian)筒(tong)(tong)的(de)(de)電(dian)(dian)(dian)(dian)路原理圖。手(shou)(shou)電(dian)(dian)(dian)(dian)筒(tong)(tong)充(chong)電(dian)(dian)(dian)(dian)時，AC220V經電(dian)(dian)(dian)(dian)容C降壓限流(liu)及整流(liu)橋整流(liu)后，給內置的(de)(de)4V蓄電(dian)(dian)(dian)(dian)池(chi)充(chong)電(dian)(dian)(dian)(dian)。LED1為(wei)(wei)充(chong)電(dian)(dian)(dian)(dian)指示燈(deng)，與之串(chuan)聯的(de)(de)300Ω電(dian)(dian)(dian)(dian)阻為(wei)(wei)限流(liu)電(dian)(dian)(dian)(dian)阻。K為(wei)(wei)手(shou)(shou)電(dian)(dian)(dian)(dian)筒(tong)(tong)的(de)(de)電(dian)(dian)(dian)(dian)源(yuan)開關。由于(yu)提問者未說充(chong)電(dian)(dian)(dian)(dian)時手(shou)(shou)電(dian)(dian)(dian)(dian)筒(tong)(tong)哪里(li)燒(shao)(shao)壞了，下面(mian)我們來分析一下這種手(shou)(shou)電(dian)(dian)(dian)(dian)筒(tong)(tong)充(chong)電(dian)(dian)(dian)(dian)時可能燒(shao)(shao)壞的(de)(de)元(yuan)件。

上圖中的(de)LED2為照明(ming)用的(de)白光LED燈(deng)(deng)珠，由于這種手(shou)(shou)電(dian)(dian)筒的(de)充電(dian)(dian)電(dian)(dian)路(lu)較簡單(dan)，在(zai)(zai)充電(dian)(dian)時(shi)(shi)(shi)蓄電(dian)(dian)池兩端的(de)電(dian)(dian)壓較高，此(ci)時(shi)(shi)(shi)不能(neng)閉合開關K使(shi)燈(deng)(deng)珠LED2點亮(liang)，否則(ze)很容易燒壞(huai)燈(deng)(deng)珠。若(ruo)是充電(dian)(dian)時(shi)(shi)(shi)LED燈(deng)(deng)珠燒壞(huai)，在(zai)(zai)確(que)認無其他故(gu)障時(shi)(shi)(shi)，只(zhi)要拆掉(diao)壞(huai)的(de)燈(deng)(deng)珠，換上同規格(ge)的(de)新(xin)燈(deng)(deng)珠即(ji)可。▲ 充電(dian)(dian)式LED手(shou)(shou)電(dian)(dian)筒的(de)電(dian)(dian)路(lu)板(ban)。▲ 充電(dian)(dian)式LED手(shou)(shou)電(dian)(dian)筒。

充電(dian)(dian)(dian)(dian)(dian)(dian)式(shi)LED手(shou)電(dian)(dian)(dian)(dian)(dian)(dian)筒(tong)(tong)內部的(de)降(jiang)壓電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)C一般要求(qiu)(qiu)耐壓值≥400V，若(ruo)該電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)的(de)耐壓值選的(de)較(jiao)低或AC220V電(dian)(dian)(dian)(dian)(dian)(dian)源電(dian)(dian)(dian)(dian)(dian)(dian)壓偏高(gao)，便可(ke)能會將這(zhe)(zhe)個(ge)電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)擊穿，這(zhe)(zhe)樣便會導致(zhi)電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)中出現(xian)較(jiao)大的(de)電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)。為(wei)了(le)避免大電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)下損壞更多(duo)的(de)元器件，有(you)的(de)手(shou)電(dian)(dian)(dian)(dian)(dian)(dian)筒(tong)(tong)電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)板上會在AC220V輸入(ru)(ru)端串入(ru)(ru)一個(ge)幾歐的(de)小電(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)或者(zhe)將輸入(ru)(ru)端PCB板的(de)一小段(duan)銅(tong)(tong)箔(bo)(bo)制(zhi)作的(de)很細，這(zhe)(zhe)樣因故障而出現(xian)大電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)時，這(zhe)(zhe)個(ge)小電(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)或較(jiao)細的(de)PCB板銅(tong)(tong)箔(bo)(bo)便會燒壞。若(ruo)是(shi)這(zhe)(zhe)種(zhong)情況，首先更換一個(ge)耐壓值符(fu)合(he)要求(qiu)(qiu)的(de)同容(rong)量電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)，然后再將燒壞的(de)PCB板銅(tong)(tong)箔(bo)(bo)或小電(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)連接(jie)即(ji)可(ke)。

若(ruo)想了解更多的電子(zi)電路及元器件知識，請關注我(wo)，謝謝。

12個led燈珠手電的充電電路能給18650電池充電嗎

想改裝普通LED手(shou)電筒的電池為鋰電池是吧(ba)

可以(yi)啊(a)不(bu)過需要另外添(tian)加一(yi)個(ge)充電(dian)控(kong)制電(dian)路。原手(shou)電(dian)筒的(de)充電(dian)電(dian)路不(bu)能直接用于鋰電(dian)池。X寶上就有鋰電(dian)池充電(dian)模塊賣，幾(ji)塊錢一(yi)個(ge)。

我手頭就(jiu)有(you)一個普通的LED燈，自己改裝了鋰電(dian)池。

原(yuan)手電筒(tong)是鉛酸電池的，重量(liang)大容(rong)量(liang)還小。鋰電池輕(qing)，容(rong)量(liang)還大。

led燈珠怎么用電池供電

led燈(deng)珠怎么用(yong)充電(dian)(dian)器的(de)電(dian)(dian)壓一(yi)般(ban)是4.7-5.6V，LED燈(deng)珠額定電(dian)(dian)壓一(yi)般(ban)3-3.6V，科瑞的(de)電(dian)(dian)壓偏低，一(yi)般(ban)在3.1V左(zuo)右，如果(guo)不加限(xian)流(liu)，直接(jie)接(jie)到5V上去(qu)，電(dian)(dian)流(liu)會(hui)很大，燈(deng)珠用(yong)不了多久就會(hui)燒壞。剛接(jie)上可以點(dian)亮，而且很亮，但點(dian)的(de)時間長了，燈(deng)珠很快就會(hui)被燒壞。

不(bu)可(ke)(ke)以。照明用高亮(liang)度LED的(de)工(gong)作電(dian)(dian)(dian)壓大約是3.2V左(zuo)右(you)，工(gong)作電(dian)(dian)(dian)流在100mA左(zuo)右(you)，如果(guo)(guo)你(ni)直接(jie)使用充(chong)電(dian)(dian)(dian)器(qi)連接(jie)的(de)話，將(jiang)會很(hen)快燒(shao)毀LED。二、不(bu)可(ke)(ke)以。原因同(tong)上三(san)、不(bu)一定。如果(guo)(guo)是使用變(bian)壓器(qi)進行充(chong)電(dian)(dian)(dian)或者(zhe)是開(kai)關電(dian)(dian)(dian)源電(dian)(dian)(dian)路(lu)(lu)進行充(chong)電(dian)(dian)(dian)，那么(me)基(ji)本上可(ke)(ke)以在充(chong)電(dian)(dian)(dian)的(de)同(tong)時使用LED，但(dan)是對(dui)于(yu)使用電(dian)(dian)(dian)容器(qi)限(xian)流的(de)簡易恒流式充(chong)電(dian)(dian)(dian)電(dian)(dian)(dian)路(lu)(lu)（就(jiu)是常見的(de)廉價的(de)那種充(chong)電(dian)(dian)(dian)式手電(dian)(dian)(dian)筒內部的(de)充(chong)電(dian)(dian)(dian)電(dian)(dian)(dian)路(lu)(lu)），就(jiu)絕對(dui)不(bu)可(ke)(ke)以在開(kai)燈的(de)情(qing)況下充(chong)電(dian)(dian)(dian)。

贊一下

用5v600mA的手機充電器接兩個串聯LED貼片燈珠需要串一個多大的限流電阻

根據提問者的(de)意思，想使用5V/600mA的(de)手機(ji)充(chong)電器(qi)點亮兩個LED貼(tie)片燈珠，由于沒(mei)有給(gei)出LED燈珠的(de)具體(ti)型號(hao)，為止(zhi)LED燈珠的(de)工作電壓(ya)及功率等，下面做(zuo)分類(lei)分析。

先說一下限流(liu)電阻的計算(suan)方法：

首先要(yao)知(zhi)道LED燈珠的(de)正向壓(ya)降V和(he)工作(zuo)電流I，明(ming)確LED燈珠的(de)型(xing)號(hao)會有相(xiang)應的(de)工作(zuo)電壓(ya)及工作(zuo)電流等參數。

那么限流電阻R的計(ji)算方法為：R=(VIN-V)/I。

若(ruo)為n個LED燈(deng)珠串聯，則限流電阻R=(VIN-n×V)/I。

LED燈珠(zhu)其實就(jiu)是(shi)一(yi)個二(er)極管，需(xu)要正向的(de)導(dao)通(tong)(tong)電(dian)(dian)壓就(jiu)能(neng)工作，一(yi)般2~3.6V，通(tong)(tong)過電(dian)(dian)流大小控制(zhi)LED燈珠(zhu)的(de)亮度(du)，LED燈珠(zhu)實際是(shi)將電(dian)(dian)能(neng)轉換為光能(neng)。

黃(huang)光(guang)和紅光(guang)LED的工(gong)作電壓(ya)(ya)一般為1.8~2.4V，而藍光(guang)、白光(guang)、綠光(guang)LED燈珠的工(gong)作電壓(ya)(ya)一般為3~3.6V。

小功(gong)率的(de)LED燈(deng)珠(zhu)工作電流一般為10~20mA,大功(gong)率LED燈(deng)珠(zhu)工作電流可達100mA/350mA甚至更高(gao)。

提問者使用5V的手機(ji)充電器(qi)點亮(liang)兩個LED燈(deng)珠，由于燈(deng)珠具(ju)體型號(hao)未知：

（1）若為黃光(guang)和紅(hong)光(guang)LED，工(gong)(gong)作(zuo)電(dian)(dian)壓1.8~2.4V左右，可以兩個LED燈(deng)珠串(chuan)聯(lian)，串(chuan)聯(lian)后(hou)限(xian)流(liu)電(dian)(dian)阻的計算(suan)：若按(an)工(gong)(gong)作(zuo)電(dian)(dian)流(liu)10mA計算(suan)，壓降按(an)2V計算(suan)，則限(xian)流(liu)電(dian)(dian)阻R=(5V-2V×2)/10mA=100Ω。

若只串一(yi)個LED，則(ze)限(xian)流電阻R=R=(5V-2V)/10mA=300Ω。

（2）若為(wei)藍光(guang)、白光(guang)、綠光(guang)LED燈珠，其工作電壓為(wei)3~3.6V左(zuo)右，這時兩個LED燈珠串聯使用5V的(de)充電器是無法(fa)點亮的(de)，只能(neng)采用并(bing)聯的(de)方式。

限流(liu)電(dian)阻(zu)計(ji)算：若工(gong)作電(dian)流(liu)依然為(wei)10mA,工(gong)作電(dian)壓按3.3V計(ji)算，則(ze)限流(liu)電(dian)阻(zu)R=(5V-3.3V)/10mA=170Ω。

限(xian)流(liu)(liu)電(dian)(dian)(dian)阻(zu)的目的是(shi)限(xian)制LED的工(gong)(gong)作(zuo)(zuo)(zuo)電(dian)(dian)(dian)流(liu)(liu)，LED的工(gong)(gong)作(zuo)(zuo)(zuo)電(dian)(dian)(dian)流(liu)(liu)與限(xian)流(liu)(liu)電(dian)(dian)(dian)阻(zu)成(cheng)反(fan)比(bi)例關(guan)系，限(xian)流(liu)(liu)電(dian)(dian)(dian)阻(zu)越大(da)工(gong)(gong)作(zuo)(zuo)(zuo)電(dian)(dian)(dian)流(liu)(liu)越小，LED燈(deng)(deng)(deng)珠的亮度越暗；反(fan)之，限(xian)流(liu)(liu)電(dian)(dian)(dian)阻(zu)越小工(gong)(gong)作(zuo)(zuo)(zuo)電(dian)(dian)(dian)流(liu)(liu)越大(da)，LED燈(deng)(deng)(deng)珠的亮度越亮。但是(shi)電(dian)(dian)(dian)流(liu)(liu)的選取(qu)必須在LED燈(deng)(deng)(deng)珠的最大(da)正常工(gong)(gong)作(zuo)(zuo)(zuo)電(dian)(dian)(dian)流(liu)(liu)以內。

以上(shang)是本人觀點，想了(le)解更多知(zhi)識請關注我，謝謝

5v充電器接3vled燈珠方法

首先看led的(de)(de)工作電(dian)流是多(duo)少(shao)，然后串聯一個合適(shi)的(de)(de)電(dian)阻(zu),接到充電(dian)器上(shang)就可以了。

以上就是小(xiao)編(bian)對(dui)于led燈(deng)珠充電(dian)(dian)電(dian)(dian)路(充電(dian)(dian)led手電(dian)(dian)筒(tong)如何維修)問(wen)題和相關問(wen)題的(de)解答(da)了(le)，希望(wang)對(dui)你有(you)用