led燈珠接電阻 led燈珠電阻怎么接 |
| 發布時間:2022-10-19 10:50:20 |
大家好(hao)我是小編榮(rong)(rong)姐今天我們來介紹led燈(deng)珠接(jie)電阻 led燈(deng)珠電阻怎么接(jie)的(de)問(wen)題，以下(xia)就是榮(rong)(rong)姐對此(ci)問(wen)題和相關問(wen)題的(de)歸納(na)整理,一起來看看吧。 文章目錄導航: 燈珠加電阻怎么調節 Led燈(deng)(deng)珠(zhu)(zhu)(zhu)線路上串(chuan)加電(dian)(dian)(dian)(dian)阻，一(yi)般是為(wei)了(le)限(xian)流(liu)(liu)(liu)，在預(yu)設的工(gong)作電(dian)(dian)(dian)(dian)流(liu)(liu)(liu)值出(chu)發(fa)去按供電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)壓去算出(chu)需要(yao)加的電(dian)(dian)(dian)(dian)阻值，同時加裝(zhuang)的電(dian)(dian)(dian)(dian)阻上也(ye)有(you)相應壓降。比如燈(deng)(deng)珠(zhu)(zhu)(zhu)工(gong)作電(dian)(dian)(dian)(dian)流(liu)(liu)(liu)設置為(wei)10mA，所(suo)需電(dian)(dian)(dian)(dian)壓為(wei)3V，現(xian)有(you)電(dian)(dian)(dian)(dian)壓為(wei)5Ⅴ，顯然電(dian)(dian)(dian)(dian)壓高出(chu)2V，用2V÷10mA=2÷0.01=200歐姆，電(dian)(dian)(dian)(dian)阻上壓降為(wei)2V，燈(deng)(deng)珠(zhu)(zhu)(zhu)上為(wei)3V，電(dian)(dian)(dian)(dian)流(liu)(liu)(liu)為(wei)10mA。如果(guo)不(bu)清楚燈(deng)(deng)珠(zhu)(zhu)(zhu)具體參數(shu)，也(ye)可(ke)先串(chuan)一(yi)個電(dian)(dian)(dian)(dian)位器(qi)(可(ke)變(bian)電(dian)(dian)(dian)(dian)阻)，從(cong)大阻值向下調節，直到燈(deng)(deng)珠(zhu)(zhu)(zhu)點亮(liang)和亮(liang)度(du)適中時，測一(yi)下電(dian)(dian)(dian)(dian)位器(qi)實用的電(dian)(dian)(dian)(dian)阻值換上固定電(dian)(dian)(dian)(dian)阻即(ji)可(ke)。
led燈珠如何接電阻 led燈只支持直流，交流變直流后是300V左(zuo)右，串(chuan)聯(lian)一(yi)個led需要35V，串(chuan)聯(lian)多少led后加(jia)電阻就行 led燈珠替換電阻方法 led燈(deng)(deng)(deng)珠(zhu)替換(huan)電(dian)阻方法:1. LED燈(deng)(deng)(deng)珠(zhu)的連接形式(shi)。 串聯式(shi)用驅動(dong)器供電(dian),供電(dian)電(dian)壓≈3.2V×燈(deng)(deng)(deng)珠(zhu)數(shu),其中(zhong)一個(ge)燈(deng)(deng)(deng)珠(zhu)損壞斷路燈(deng)(deng)(deng)全不(bu)亮(liang)了。 2. LED燈(deng)(deng)珠的(de)檢(jian)查。 檢(jian)查LED燈(deng)(deng)珠的(de)好(hao)壞,可用(yong)指(zhi)針式萬(wan)用(yong)表的(de)×10K電阻檔(dang)進(jin)行直觀檢(jian)查,如果萬(wan)用(yong)表沒有(you)該檔(dang)位,可用(yong)電池(chi)配(pei)合指(zhi)針式萬(wan)用(yong)表電壓檔(dang)進(jin)行。3. LED燈(deng)(deng)珠的(de)更換(huan)。 LED燈(deng)(deng)的(de)燈(deng)(deng)珠有(you)故障(zhang),可以更換(huan)燈(deng)(deng)珠使LED燈(deng)(deng)恢(hui)復(fu)如初。在業(ye)余(yu)條件(jian)下有(you)兩(liang)把(ba)電烙鐵及一把(ba)鑷(nie)子就(jiu)可以了(le)。燈(deng)(deng)珠型(xing)號(hao)不(bu)同(tong),更換(huan)操作也(ye)略有(you)差別(bie)。 LED燈珠串聯多大的電阻 LED燈(deng)珠(zhu)(zhu)要(yao)串(chuan)聯(lian)(lian)的(de)(de)(de)降壓電(dian)阻，要(yao)根(gen)據(ju)燈(deng)珠(zhu)(zhu)的(de)(de)(de)供電(dian)電(dian)壓與(yu)燈(deng)珠(zhu)(zhu)的(de)(de)(de)額(e)(e)定電(dian)流(liu)(liu)(liu)來決定，例如(ru)LED燈(deng)珠(zhu)(zhu)的(de)(de)(de)電(dian)壓是3伏，額(e)(e)定電(dian)流(liu)(liu)(liu)50毫(hao)(hao)安，供電(dian)電(dian)壓是100伏，那(nei)么需要(yao)串(chuan)聯(lian)(lian)1940歐姆，功率為5瓦的(de)(de)(de)電(dian)阻。如(ru)果(guo)燈(deng)珠(zhu)(zhu)的(de)(de)(de)額(e)(e)定電(dian)流(liu)(liu)(liu)不(bu)到50毫(hao)(hao)安，那(nei)么需要(yao)串(chuan)聯(lian)(lian)的(de)(de)(de)電(dian)阻的(de)(de)(de)阻值會(hui)更(geng)大。 led燈珠為什么加電阻 1、led燈(deng)加電(dian)阻為了降電(dian)流。 2、LED燈(deng)不是一定要(yao)加電(dian)(dian)(dian)阻,如(ru)果電(dian)(dian)(dian)源是恒(heng)流的(de),可以不用電(dian)(dian)(dian)阻的(de)。因為LED非(fei)線性元件,對電(dian)(dian)(dian)壓很敏感,無法以電(dian)(dian)(dian)壓方(fang)(fang)式控(kong)制(zhi),主要(yao)是以電(dian)(dian)(dian)流的(de)方(fang)(fang)式控(kong)制(zhi)LED燈(deng)亮(liang)度,加電(dian)(dian)(dian)阻只是限(xian)流而(er)已,其實(shi)加電(dian)(dian)(dian)阻會影響(xiang)LED燈(deng)效率(lv),小功率(lv)的(de)LED燈(deng)可以忽略電(dian)(dian)(dian)阻上的(de)損耗,而(er)大(da)功率(lv)的(de)LED燈(deng)是直接用恒(heng)流電(dian)(dian)(dian)源供電(dian)(dian)(dian)。 以(yi)上就是天成(cheng)小編對于led燈珠接電(dian)阻(zu) led燈珠電(dian)阻(zu)怎么接問題和相(xiang)關(guan)問題的解答了，希望對你(ni)有用 【責(ze)任編輯(ji)：榮(rong)姐】 |
