led燈珠電壓由什么決定 led燈的供電電壓與燈珠的個數關系? |
| 發布時間:2022-09-13 13:13:37 |
大(da)家好今(jin)天來(lai)介紹led燈(deng)珠電壓(ya)由什么決定 led燈(deng)的供電電壓(ya)與(yu)燈(deng)珠的個數(shu)關(guan)(guan)系的問題(ti)，以(yi)下是小編對(dui)此問題(ti)和相關(guan)(guan)問題(ti)的歸納整(zheng)理,一(yi)起來(lai)看(kan)(kan)看(kan)(kan)吧。 文章目錄導航:led燈珠電壓多少伏一般情況下(xia)LED燈(deng)工作電(dian)壓是3～12V。 LED燈(deng)珠，其實就是一(yi)個(ge)發(fa)光(guang)二極管，加載一(yi)定的電(dian)(dian)(dian)壓(ya)和電(dian)(dian)(dian)流(liu)后就會發(fa)光(guang)。通常(chang)來(lai)說單(dan)顆LED芯(xin)片(pian)的電(dian)(dian)(dian)壓(ya)在3V左右(you)，電(dian)(dian)(dian)流(liu)在30mA這(zhe)樣，而對(dui)于LED燈(deng)珠的電(dian)(dian)(dian)壓(ya)和電(dian)(dian)(dian)流(liu)，大都(dou)是LED封裝過程中，LED芯(xin)片(pian)的串并聯(lian)關系(xi)決(jue)定的。 燈管(guan)中用(yong)得最多的(de)(de)(de)0.2W的(de)(de)(de)LED燈珠，是(shi)兩顆LED芯片并聯(lian)而成(cheng)，即3V，60MA。而對于阻容(rong)款電源用(yong)得最多的(de)(de)(de)高壓LED 9V燈珠，則是(shi)由三顆LED芯片串聯(lian)而成(cheng)，即9V，30MA。
led燈的供電電壓與燈珠的個數關系驅動(dong)器(直流電(dian)源)的(de)(de)直流輸出電(dian)壓受led燈燈板(ban)上(shang)所用(yong)燈珠(zhu)采(cai)用(yong)的(de)(de)電(dian)路形式決定，不能簡單用(yong)燈珠(zhu)數量確定。 比如(ru)10顆正向導通電(dian)壓(ya)為3V的(de)燈珠，釆用并(bing)聯方式連接(jie)，根據并(bing)聯電(dian)路特點，這10顆燈珠上的(de)電(dian)壓(ya)相同，供電(dian)電(dian)壓(ya)3V即(ji)可。 若這10顆釆用串聯方式連接，根(gen)據串聯電(dian)(dian)路特點(dian)，這10顆燈(deng)珠的(de)供(gong)電(dian)(dian)電(dian)(dian)壓(ya)應為30V。led燈(deng)燈(deng)珠使用的(de)電(dian)(dian)路還可能是(shi)串并聯混合方式，供(gong)電(dian)(dian)電(dian)(dian)壓(ya)會依具體電(dian)(dian)路不(bu)(bu)同而(er)不(bu)(bu)同。 LED燈珠電壓由什么決定LED手(shou)電(dian)(dian)筒燈(deng)(deng)珠(zhu)(zhu)(zhu)工(gong)(gong)(gong)作(zuo)(zuo)電(dian)(dian)壓(ya)(ya)，和手(shou)電(dian)(dian)筒的(de)工(gong)(gong)(gong)作(zuo)(zuo)電(dian)(dian)壓(ya)(ya)是(shi)(shi)不同(tong)的(de)。LED燈(deng)(deng)珠(zhu)(zhu)(zhu)工(gong)(gong)(gong)作(zuo)(zuo)電(dian)(dian)壓(ya)(ya)，有多種規格，單個燈(deng)(deng)珠(zhu)(zhu)(zhu)工(gong)(gong)(gong)作(zuo)(zuo)電(dian)(dian)壓(ya)(ya)在2.5V到(dao)3.0V之間。而手(shou)電(dian)(dian)筒的(de)工(gong)(gong)(gong)作(zuo)(zuo)電(dian)(dian)壓(ya)(ya)也有多種規格，大致從3.0V到(dao)12V的(de)較普遍，甚(shen)至有強光的(de)28、36伏的(de)都有。那主要是(shi)(shi)由電(dian)(dian)池(chi)的(de)工(gong)(gong)(gong)作(zuo)(zuo)電(dian)(dian)壓(ya)(ya)決定的(de)。因為(wei)，LED燈(deng)(deng)珠(zhu)(zhu)(zhu)工(gong)(gong)(gong)作(zuo)(zuo)電(dian)(dian)壓(ya)(ya)，可以通過串并聯的(de)連接方(fang)式改變(bian)燈(deng)(deng)珠(zhu)(zhu)(zhu)工(gong)(gong)(gong)作(zuo)(zuo)電(dian)(dian)壓(ya)(ya)，以此來適應電(dian)(dian)池(chi)的(de)工(gong)(gong)(gong)作(zuo)(zuo)電(dian)(dian)壓(ya)(ya)。 3瓦LED燈珠多大電壓3wLed燈珠(zhu)的(de)電(dian)(dian)(dian)壓(ya)，是(shi)(shi)電(dian)(dian)(dian)該燈珠(zhu)技術參數決定的(de)。燈珠(zhu)功率(w)=電(dian)(dian)(dian)壓(ya)(V)x電(dian)(dian)(dian)流(ⅰ)。電(dian)(dian)(dian)壓(ya)是(shi)(shi)這(zhe)(zhe)個燈珠(zhu)的(de)正向導(dao)通電(dian)(dian)(dian)壓(ya)，電(dian)(dian)(dian)流是(shi)(shi)這(zhe)(zhe)個燈珠(zhu)的(de)額定工作電(dian)(dian)(dian)流。由(you)于Led燈珠(zhu)規格型號不同，同是(shi)(shi)3w的(de)燈珠(zhu)它的(de)導(dao)通電(dian)(dian)(dian)壓(ya)和工作電(dian)(dian)(dian)流也是(shi)(shi)不同的(de)，因而3w的(de)Led燈珠(zhu)不能(neng)確定它的(de)電(dian)(dian)(dian)壓(ya)。 LED光源的電流和電壓是怎么算的好(hao)吧，樓上(shang)兄弟(di)都知道一些，但不(bu)(bu)是(shi)很對。LED是(shi)電(dian)(dian)流(liu)性(xing)器件(jian)，不(bu)(bu)像別的東西額定(ding)電(dian)(dian)壓(ya)(ya)多(duo)少電(dian)(dian)流(liu)多(duo)少，要用幾V電(dian)(dian)池什么的，一般(ban)以LED燈(deng)(deng)正向(xiang)(xiang)電(dian)(dian)流(liu)為(wei)20mA時來確定(ding)正向(xiang)(xiang)壓(ya)(ya)降，在這(zhe)(zhe)個條件(jian)下，一般(ban)紅黃色是(shi)1.8-2.2V，藍(lan)綠白是(shi)3-3.2V，樓上(shang)兄弟(di)說每(mei)顆1W燈(deng)(deng)珠(zhu)一般(ban)按320MA計(ji)算(suan)電(dian)(dian)流(liu)，這(zhe)(zhe)個也對，到了大功率(lv)LED，一般(ban)就不(bu)(bu)用恒(heng)壓(ya)(ya)源供電(dian)(dian)了，要用恒(heng)流(liu)源 以上(shang)就是小編對(dui)于led燈珠(zhu)電壓(ya)由(you)什么決定 led燈的供電電壓(ya)與燈珠(zhu)的個數(shu)關系問題和相關問題的解答了，希(xi)望(wang)對(dui)你(ni)有(you)用 |
