led燈珠超流 led燈珠電流過大會燒壞嗎 |
| 發布時間:2022-11-05 11:51:37 |
大(da)家好(hao)我是天成照(zhao)明LED燈珠廠家小編(bian)燈漂(piao)亮今天我們來介紹led燈珠超流 led燈珠電流過(guo)大(da)會燒壞(huai)嗎的問題(ti)，以下就是燈漂(piao)亮對此問題(ti)和相關問題(ti)的歸納整理,一(yi)起來看(kan)(kan)看(kan)(kan)吧(ba)。 文章目錄導航: led燈珠電流過大解決辦法 LED燈珠(zhu)電(dian)流過大的解(jie)決辦(ban)法，可以加限流電(dian)阻或降低電(dian)壓來解(jie)決。頭條萊垍
使用白光led燈珠為什么不能超電壓或超電流 不(bu)(bu)論是(shi)(shi)(shi)移動(dong)電(dian)(dian)(dian)(dian)源(yuan)(yuan)（標稱5V）還是(shi)(shi)(shi)鋰電(dian)(dian)(dian)(dian)池(chi)（標稱3.7V），都可以作為led電(dian)(dian)(dian)(dian)源(yuan)(yuan)。由于電(dian)(dian)(dian)(dian)源(yuan)(yuan)電(dian)(dian)(dian)(dian)壓(ya)(ya)小于led燈(deng)珠工(gong)作電(dian)(dian)(dian)(dian)壓(ya)(ya)的(de)(de)2倍，要(yao)(yao)想led燈(deng)珠正常(chang)發光(guang)，只能并(bing)(bing)聯使用。直接(jie)接(jie)電(dian)(dian)(dian)(dian)源(yuan)(yuan)，存在超壓(ya)(ya)導致(zhi)的(de)(de)超流，加速光(guang)衰甚至燒毀（一會(hui)不(bu)(bu)久就出(chu)(chu)現(xian)一兩(liang)個(ge)(ge)(ge)(ge)LED在不(bu)(bu)斷的(de)(de)閃(shan)爍(shuo)，LED摸(mo)上(shang)去挺熱的(de)(de)---就是(shi)(shi)(shi)例證。閃(shan)爍(shuo)表明已經損壞）。要(yao)(yao)讓led工(gong)作在正常(chang)電(dian)(dian)(dian)(dian)壓(ya)(ya)下（相當于間接(jie)維持合適工(gong)作電(dian)(dian)(dian)(dian)流），必須把電(dian)(dian)(dian)(dian)源(yuan)(yuan)比led多出(chu)(chu)的(de)(de)電(dian)(dian)(dian)(dian)壓(ya)(ya)加以分(fen)壓(ya)(ya)，最簡單的(de)(de)就是(shi)(shi)(shi)根(gen)據物理學原理，串聯電(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)分(fen)壓(ya)(ya)的(de)(de)方法。理論計算方法如下每個(ge)(ge)(ge)(ge)支路的(de)(de)電(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)阻(zu)(zu)(zu)值（Ω）＝（電(dian)(dian)(dian)(dian)源(yuan)(yuan)輸出(chu)(chu)電(dian)(dian)(dian)(dian)壓(ya)(ya)－3V）÷0.02電(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)功(gong)率（W）＞（電(dian)(dian)(dian)(dian)源(yuan)(yuan)輸出(chu)(chu)電(dian)(dian)(dian)(dian)壓(ya)(ya)－3V）×0.02。如果是(shi)(shi)(shi)n個(ge)(ge)(ge)(ge)led并(bing)(bing)聯后共用1個(ge)(ge)(ge)(ge)電(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)的(de)(de)阻(zu)(zu)(zu)值（Ω）＝（電(dian)(dian)(dian)(dian)源(yuan)(yuan)輸出(chu)(chu)電(dian)(dian)(dian)(dian)壓(ya)(ya)－3V）÷n×0.02。電(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)功(gong)率（W）＞（電(dian)(dian)(dian)(dian)源(yuan)(yuan)輸出(chu)(chu)電(dian)(dian)(dian)(dian)壓(ya)(ya)－3V）×n×0.02。注(zhu)：led是(shi)(shi)(shi)非線性元件，燈(deng)珠的(de)(de)內阻(zu)(zu)(zu)不(bu)(bu)是(shi)(shi)(shi)一個(ge)(ge)(ge)(ge)定值，不(bu)(bu)同工(gong)作電(dian)(dian)(dian)(dian)流下呈現(xian)不(bu)(bu)同的(de)(de)相當于阻(zu)(zu)(zu)值，實踐中無(wu)需(xu)計算。 led燈珠電流過大會燒壞嗎 當(dang)然了(le)，led燈珠(zhu)(zhu)也(ye)是有(you)額定電流的當(dang)電流過(guo)大也(ye)會(hui)燒壞的。不過(guo)相對來說電壓過(guo)大對燈珠(zhu)(zhu)的影響更大一些，led燈珠(zhu)(zhu)就是發光二(er)極管(guan)它(ta)跟(gen)其它(ta)的二(er)極管(guan)特性(xing)(xing)上(shang)也(ye)是差不多的，如果(guo)仔(zi)細(xi)看看其伏安特性(xing)(xing)曲線就知(zhi)道了(le)，當(dang)在某個點上(shang)當(dang)電壓略有(you)增(zeng)加其電流就會(hui)產生巨大的增(zeng)量。 led燈超過多少安電流會燒燈珠 當然會 多大(da)電(dian)(dian)流(liu)才會燒(shao)(shao)燈(deng) 得(de)看你的(de)(de)燈(deng)珠額(e)定(ding)電(dian)(dian)流(liu)是多大(da)的(de)(de)。 超(chao)過(guo)額(e)定(ding)電(dian)(dian)流(liu)3倍就會很(hen)危險很(hen)容易燒(shao)(shao)燈(deng)了 你的(de)(de)額(e)定(ding)電(dian)(dian)流(liu)是多大(da) 當然會 電流過高對LED燈珠有什么影響 電流過高會(hui)燒壞led燈珠。 led燈(deng)(deng)珠(zhu)也(ye)是有額定電流的(de)(de)(de)(de)。當電流過(guo)大(da)也(ye)會燒壞的(de)(de)(de)(de)。不(bu)過(guo)相(xiang)對來說電壓過(guo)大(da)對燈(deng)(deng)珠(zhu)的(de)(de)(de)(de)影響更(geng)大(da)一(yi)些，led燈(deng)(deng)珠(zhu)就(jiu)是發(fa)光二極(ji)管(guan)它跟其它的(de)(de)(de)(de)二極(ji)管(guan)特(te)性上也(ye)是差不(bu)多的(de)(de)(de)(de)，如果仔細看看其伏安特(te)性曲線就(jiu)知道了，當在(zai)某(mou)個點上當電壓略有增(zeng)加其電流就(jiu)會產生(sheng)巨大(da)的(de)(de)(de)(de)增(zeng)量。 以上就(jiu)是天成小編對(dui)于led燈(deng)(deng)珠超流(liu)(liu) led燈(deng)(deng)珠電流(liu)(liu)過(guo)大會燒(shao)壞嗎問(wen)題和相(xiang)關問(wen)題的解答了(le)，希(xi)望對(dui)你有用 【責(ze)任編輯：燈(deng)(deng)漂亮】 |
