大家好我(wo)是天成(cheng)照明LED燈(deng)(deng)珠廠家小編(bian)燈(deng)(deng)漂亮今(jin)天我(wo)們來介紹led燈(deng)(deng)珠為什(shen)么加電(dian)阻(zu) led燈(deng)(deng)珠如何配限流電(dian)阻(zu)的問題(ti)，以下就是燈(deng)(deng)漂亮對(dui)此(ci)問題(ti)和相關問題(ti)的歸納(na)整理,一起來看看吧。

文章目錄導航:

• 1、led燈珠為什么加電阻
• 2、燈珠加電阻怎么調節
• 3、led燈珠配電阻方法
• 4、Led燈閃怎么加電阻
• 5、led燈珠每隔多少個安一個電阻

led燈珠為什么加電阻

1、led燈(deng)加(jia)電阻為了降電流。

2、LED燈(deng)不是一定要(yao)加(jia)電(dian)(dian)(dian)(dian)阻,如果電(dian)(dian)(dian)(dian)源(yuan)是恒(heng)流(liu)(liu)的(de),可以(yi)不用電(dian)(dian)(dian)(dian)阻的(de)。因為LED非線性(xing)元件,對電(dian)(dian)(dian)(dian)壓(ya)很敏(min)感,無法(fa)以(yi)電(dian)(dian)(dian)(dian)壓(ya)方式(shi)控制(zhi)(zhi),主(zhu)要(yao)是以(yi)電(dian)(dian)(dian)(dian)流(liu)(liu)的(de)方式(shi)控制(zhi)(zhi)LED燈(deng)亮度,加(jia)電(dian)(dian)(dian)(dian)阻只(zhi)是限流(liu)(liu)而已(yi),其實(shi)加(jia)電(dian)(dian)(dian)(dian)阻會影響LED燈(deng)效率,小功率的(de)LED燈(deng)可以(yi)忽略(lve)電(dian)(dian)(dian)(dian)阻上的(de)損耗(hao),而大功率的(de)LED燈(deng)是直(zhi)接用恒(heng)流(liu)(liu)電(dian)(dian)(dian)(dian)源(yuan)供電(dian)(dian)(dian)(dian)。

燈珠加電阻怎么調節

Led燈珠(zhu)(zhu)線路上串加電(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)，一般是(shi)為(wei)了限(xian)流(liu)，在預設的(de)工作電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)值(zhi)出發去按供電(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)去算出需要(yao)加的(de)電(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)值(zhi)，同時加裝的(de)電(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)上也(ye)有(you)相應壓(ya)降。比如(ru)燈珠(zhu)(zhu)工作電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)設置為(wei)10mA，所需電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)為(wei)3V，現有(you)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)為(wei)5Ⅴ，顯然(ran)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)高出2V，用(yong)2V÷10mA=2÷0.01=200歐姆，電(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)上壓(ya)降為(wei)2V，燈珠(zhu)(zhu)上為(wei)3V，電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)為(wei)10mA。如(ru)果不清楚(chu)燈珠(zhu)(zhu)具體參數，也(ye)可先串一個電(dian)(dian)(dian)(dian)(dian)(dian)位器(可變(bian)電(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu))，從大阻(zu)(zu)值(zhi)向(xiang)下(xia)調節，直到燈珠(zhu)(zhu)點亮和亮度適中(zhong)時，測一下(xia)電(dian)(dian)(dian)(dian)(dian)(dian)位器實用(yong)的(de)電(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)值(zhi)換(huan)上固定電(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)即可。

led燈珠配電阻方法

led燈只支持(chi)直流，交流變直流后(hou)是300V左右(you)，串(chuan)(chuan)聯一個led需(xu)要35V，串(chuan)(chuan)聯多少led后(hou)加電阻就行(xing)。

Led燈閃怎么加電阻

首先確定(ding)你(ni)(ni)的(de)燈珠的(de)額(e)定(ding)工作(zuo)電壓(ya)，電流(liu)，然后根據(ju)你(ni)(ni)的(de)實際供電最高電壓(ya)來配置電阻阻值，這里的(de)電阻是限流(liu)用的(de)。

假如你(ni)的(de)(de)(de)(de)燈(deng)珠是3V，20mA,你(ni)的(de)(de)(de)(de)電(dian)源最高是90v，一塊(kuai)板子(zi)可以放3顆燈(deng)珠，那(nei)么這塊(kuai)板子(zi)就(jiu)是9V的(de)(de)(de)(de)電(dian)壓(ya)，兩塊(kuai)板子(zi)串聯就(jiu)得18V，供電(dian)最高電(dian)壓(ya)90V就(jiu)需要電(dian)阻(zu)分擔(dan)90-18=72V電(dian)壓(ya)。LED的(de)(de)(de)(de)電(dian)流(liu)最好(hao)是80%額定電(dian)流(liu)，以便在亮度足夠的(de)(de)(de)(de)前(qian)提下保持其使用(yong)壽命。

假設我們讓它工作在15mA電(dian)流下，要(yao)配置的限流電(dian)阻阻值應(ying)為(wei)72V/0.015A=4.8K歐姆電(dian)阻，實(shi)際電(dian)阻阻值相近的有4.7K的色環電(dian)阻供使用。

單路(lu)板子計算好了，再根據每路(lu)的供電電流計算并(bing)聯路(lu)數(shu)的總電流，不能(neng)超過電源的最大(da)功(gong)率。

led燈珠每隔多少個安一個電阻

LED燈珠所串聯(lian)的(de)(de)電阻的(de)(de)數量(liang)和阻值，一(yi)般和輸入的(de)(de)電壓及LED燈珠規格(ge)相關。

以上(shang)就是天成小編(bian)對于led燈珠為什么加電阻(zu) led燈珠如何配限流電阻(zu)問(wen)題(ti)和相關問(wen)題(ti)的解答了(le)，希望對你有用 【責任編(bian)輯：燈漂(piao)亮】