【LED燈(deng)條功率】3528燈(deng)帶(dai)、5050燈(deng)帶(dai)一米多少(shao)瓦 LED燈(deng)條電壓限制(zhi)
大(da)家都(dou)(dou)知道正常(chang)(chang)情況(kuang)的(de)LED燈帶(dai)電(dian)壓(ya)常(chang)(chang)規(gui)(gui)(gui)規(gui)(gui)(gui)格是(shi)12V和24V,12V的(de)LED燈帶(dai)是(shi)三顆(ke)LED為(wei)一(yi)組(zu)(zu),24V的(de)LED燈帶(dai)是(shi)6顆(ke)LED為(wei)一(yi)組(zu)(zu)。曾經有(you)客(ke)戶要求降(jiang)低供電(dian)電(dian)壓(ya),當然不(bu)是(shi)所有(you)顏色、規(gui)(gui)(gui)格的(de)都(dou)(dou)可(ke)以降(jiang)低電(dian)壓(ya)使用的(de),并且也不(bu)是(shi)可(ke)以無條件(jian)的(de)降(jiang)低。為(wei)了更明(ming)白(bai)的(de)區分(fen)什么樣規(gui)(gui)(gui)格的(de)LED燈帶(dai)電(dian)壓(ya)可(ke)以降(jiang)低,我們來(lai)看(kan)看(kan)下面(mian)5種常(chang)(chang)規(gui)(gui)(gui)顏色單顆(ke)LED的(de)正常(chang)(chang)電(dian)壓(ya):
1、紅色LED:1.8~2.2V
2、藍(lan)色(se)LED:3.0~3.2V
3、黃色LED:1.8~2.0V
4、綠色LED:2.9~3.1V
5、白色(se)LED:3.0~3.3V
市面上的標準直流(liu)電(dian)源(yuan)電(dian)壓(ya)規格有(you)6V、9V、12V、18V、24V等,那(nei)么LED燈帶降(jiang)壓(ya)的規格也必須與(yu)這(zhe)些規格相符,否(fou)則電(dian)源(yuan)的匹配也是一個問題。
一、下面就以這幾種常規顏色的LED為例來說明3顆LED為一組的LED燈帶的最低電壓限制:
根據公式(shi)i(電(dian)(dian)(dian)(dian)(dian)(dian)流)=U(電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya))/R(電(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)),電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)相同時(shi),電(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)大(da)則電(dian)(dian)(dian)(dian)(dian)(dian)流小(xiao)(xiao),電(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)小(xiao)(xiao)則電(dian)(dian)(dian)(dian)(dian)(dian)流大(da);電(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)相同時(shi),電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)大(da)則電(dian)(dian)(dian)(dian)(dian)(dian)流大(da),電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)小(xiao)(xiao)則電(dian)(dian)(dian)(dian)(dian)(dian)流小(xiao)(xiao);電(dian)(dian)(dian)(dian)(dian)(dian)流相同時(shi),電(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)大(da)則分(fen)配(pei)的(de)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)大(da)
1、白色LED:按最(zui)低(di)驅動(dong)電(dian)(dian)壓(ya)計(ji)算(suan):3*3.0=9V,如果LED燈帶(dai)的供(gong)電(dian)(dian)電(dian)(dian)壓(ya)是9V,則(ze)沒有辦法再(zai)加(jia)限流電(dian)(dian)阻了。如果其它組LED燈帶(dai)有損(sun)壞的話(hua),就會(hui)造成(cheng)這(zhe)一組LED燈帶(dai)的電(dian)(dian)流加(jia)大而燒壞LED。但是如果加(jia)了限流電(dian)(dian)阻,就會(hui)低(di)于LED的最(zui)低(di)驅動(dong)驅動(dong)電(dian)(dian)壓(ya),會(hui)影響(xiang)LED燈帶(dai)的發光(guang)強度(du)和(he)發光(guang)效果。因此,光(guang)虹白色LED燈帶(dai)的最(zui)低(di)電(dian)(dian)壓(ya)限制(zhi)為12V。
2、紅色(se)LED:按最(zui)低驅動(dong)電(dian)壓1.8V計算,3*1.8V=5.4V,則按常規電(dian)源電(dian)壓規格來看,6V電(dian)壓就可以了。6-5.4V=0.6V,還可以加30歐姆的限流(liu)電(dian)阻。故(gu)紅色(se)LED燈(deng)帶的最(zui)低電(dian)壓限制為6V。
3、藍色LED:與白色LED燈帶的最低(di)電壓限制是一樣的,是12V電壓。
4、綠(lv)色(se)LED:按最(zui)低驅動電(dian)壓2.9V計算,3*2.9V=8.7V,則(ze)按常規電(dian)源電(dian)壓規格來看,9V電(dian)壓還可以。9-8.7V=0.3V,還可以加(jia)15歐姆的(de)限(xian)流(liu)電(dian)阻。故光虹綠(lv)色(se)LED燈帶(dai)的(de)最(zui)低電(dian)壓限(xian)制(zhi)為9V。
5、黃(huang)色(se)LED:與光虹(hong)紅色(se)LED燈(deng)帶的最低電壓(ya)限制是(shi)一樣,都是(shi)6V。
二、6顆LED為一組的LED燈帶的最低電壓限制:
根(gen)據(ju)公(gong)式i(電(dian)(dian)流(liu))=U(電(dian)(dian)壓)/R(電(dian)(dian)阻),電(dian)(dian)壓相(xiang)(xiang)同(tong)時(shi),電(dian)(dian)阻大(da)(da)則(ze)電(dian)(dian)流(liu)小(xiao),電(dian)(dian)阻小(xiao)則(ze)電(dian)(dian)流(liu)大(da)(da);電(dian)(dian)阻相(xiang)(xiang)同(tong)時(shi),電(dian)(dian)壓大(da)(da)則(ze)電(dian)(dian)流(liu)大(da)(da),電(dian)(dian)壓小(xiao)則(ze)電(dian)(dian)流(liu)小(xiao);電(dian)(dian)流(liu)相(xiang)(xiang)同(tong)時(shi),電(dian)(dian)阻大(da)(da)則(ze)分配的(de)電(dian)(dian)壓大(da)(da)
1、白(bai)色(se)(se)LED:按最(zui)低(di)驅動電壓(ya)計算:6*3.0=18V,如(ru)果(guo)(guo)光虹LED燈(deng)帶(dai)(dai)的(de)(de)供(gong)電電壓(ya)是(shi)18V,則沒有辦法(fa)再加限(xian)流(liu)(liu)電阻了。如(ru)果(guo)(guo)其它(ta)組LED燈(deng)帶(dai)(dai)有損壞的(de)(de)話(hua),就(jiu)會造(zao)成這一組LED燈(deng)帶(dai)(dai)的(de)(de)電流(liu)(liu)加大而(er)燒壞LED。但是(shi)如(ru)果(guo)(guo)加了限(xian)流(liu)(liu)電阻,就(jiu)會低(di)于LED的(de)(de)最(zui)低(di)驅動驅動電壓(ya),會影響(xiang)LED燈(deng)帶(dai)(dai)的(de)(de)發光強度(du)和發光效(xiao)果(guo)(guo)。因(yin)此(ci),白(bai)色(se)(se)LED燈(deng)帶(dai)(dai)的(de)(de)最(zui)低(di)電壓(ya)限(xian)制為24V。
2、紅色LED:按最(zui)低驅動電壓(ya)1.8V計算,6*1.8V=10.8V,則(ze)按常規電源(yuan)電壓(ya)規格來看,需(xu)要12V電壓(ya)。12-10.8V=1.2V,還(huan)可以加60歐姆的(de)限流電阻。故紅色LED燈帶的(de)最(zui)低電壓(ya)限制為12V。
3、藍色LED:與光虹白(bai)色LED燈(deng)帶的最低電壓(ya)限(xian)制是一樣的,是24V電壓(ya)。
4、綠色(se)LED:按最低驅動電(dian)(dian)(dian)壓(ya)2.9V計算,6*2.9V=17.4V,則按常規(gui)電(dian)(dian)(dian)源電(dian)(dian)(dian)壓(ya)規(gui)格來(lai)看,18V電(dian)(dian)(dian)壓(ya)還可以。18-17.4V=0.6V,還可以加(jia)30歐姆的(de)限流電(dian)(dian)(dian)阻。故綠色(se)LED燈帶(dai)的(de)最低電(dian)(dian)(dian)壓(ya)限制(zhi)18V。
5、黃色LED:與紅(hong)色LED燈帶的最低電壓限制(zhi)是(shi)一樣,都是(shi)12V。
三、LED燈帶功率
功(gong)率(lv)是(shi)(shi)能量(liang)的(de)(de)傳輸率(lv)的(de)(de)度量(liang),在(zai)直流電(dian)路中它(ta)是(shi)(shi)電(dian)壓V和電(dian)流A的(de)(de)乘積(ji);在(zai)交(jiao)流系統里則(ze)要(yao)復(fu)雜的(de)(de)多了。不管(guan)是(shi)(shi)高壓還是(shi)(shi)低(di)壓led燈(deng)帶,它(ta)們(men)都是(shi)(shi)將交(jiao)流轉化為直流來(lai)進行工作的(de)(de)。 所(suo)以,led燈(deng)帶功(gong)率(lv)計算可以用(yong): P=UI 每個廠(chang)家由于(yu)芯片不一樣(yang),會(hui)(hui)導致(zhi)led燈(deng)珠工作電(dian)壓和工作電(dian)流不一樣(yang)。所(suo)以,市場上(shang)同(tong)樣(yang)一米led燈(deng)帶,它(ta)們(men)的(de)(de)功(gong)率(lv)會(hui)(hui)不盡(jin)相同(tong)。
3528燈帶一米多少瓦 5050燈帶一米多少瓦
LED燈帶12V一米的有多種功率,常見的5w到20w之間,例如: 3528led,每米30顆led,每米功率2.4w;每米60顆led,每米4.8w。 5050led ,每米30顆led,每米7.2w;每米60顆led ,每米14.4w。