【LED燈(deng)條功率】3528燈(deng)帶(dai)、5050燈(deng)帶(dai)一米(mi)多少(shao)瓦 LED燈(deng)條電壓限制

大家都(dou)知道正(zheng)常(chang)情況的(de)LED燈帶(dai)(dai)電壓(ya)常(chang)規(gui)(gui)規(gui)(gui)格是12V和24V，12V的(de)LED燈帶(dai)(dai)是三顆(ke)LED為一組，24V的(de)LED燈帶(dai)(dai)是6顆(ke)LED為一組。曾經有(you)客戶要求(qiu)降低(di)供電電壓(ya)，當然不是所有(you)顏色(se)、規(gui)(gui)格的(de)都(dou)可(ke)以(yi)降低(di)電壓(ya)使用(yong)的(de)，并且也不是可(ke)以(yi)無條件的(de)降低(di)。為了(le)更明(ming)白的(de)區分什么(me)樣規(gui)(gui)格的(de)LED燈帶(dai)(dai)電壓(ya)可(ke)以(yi)降低(di)，我們來看(kan)看(kan)下面(mian)5種常(chang)規(gui)(gui)顏色(se)單顆(ke)LED的(de)正(zheng)常(chang)電壓(ya)：

1、紅色LED：1.8~2.2V

2、藍色(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(de)(de)標準直流電源電壓(ya)規格有6V、9V、12V、18V、24V等，那(nei)么LED燈帶降壓(ya)的(de)(de)規格也必須與這些規格相符(fu)，否則(ze)電源的(de)(de)匹配也是一個問(wen)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(ju)公式(shi)i(電(dian)(dian)(dian)(dian)(dian)流)=U(電(dian)(dian)(dian)(dian)(dian)壓)/R(電(dian)(dian)(dian)(dian)(dian)阻)，電(dian)(dian)(dian)(dian)(dian)壓相同時，電(dian)(dian)(dian)(dian)(dian)阻大(da)(da)則(ze)(ze)電(dian)(dian)(dian)(dian)(dian)流小，電(dian)(dian)(dian)(dian)(dian)阻小則(ze)(ze)電(dian)(dian)(dian)(dian)(dian)流大(da)(da)；電(dian)(dian)(dian)(dian)(dian)阻相同時，電(dian)(dian)(dian)(dian)(dian)壓大(da)(da)則(ze)(ze)電(dian)(dian)(dian)(dian)(dian)流大(da)(da)，電(dian)(dian)(dian)(dian)(dian)壓小則(ze)(ze)電(dian)(dian)(dian)(dian)(dian)流小；電(dian)(dian)(dian)(dian)(dian)流相同時，電(dian)(dian)(dian)(dian)(dian)阻大(da)(da)則(ze)(ze)分(fen)配的電(dian)(dian)(dian)(dian)(dian)壓大(da)(da)

1、白色LED：按最低(di)驅動電(dian)(dian)壓(ya)(ya)計算：3*3.0=9V，如(ru)果LED燈(deng)帶的(de)供電(dian)(dian)電(dian)(dian)壓(ya)(ya)是9V，則沒(mei)有辦法再(zai)加限流電(dian)(dian)阻了。如(ru)果其(qi)它(ta)組LED燈(deng)帶有損壞的(de)話，就會(hui)造成這一組LED燈(deng)帶的(de)電(dian)(dian)流加大而燒壞LED。但是如(ru)果加了限流電(dian)(dian)阻，就會(hui)低(di)于(yu)LED的(de)最低(di)驅動驅動電(dian)(dian)壓(ya)(ya)，會(hui)影響LED燈(deng)帶的(de)發光強度和發光效(xiao)果。因此，光虹白色LED燈(deng)帶的(de)最低(di)電(dian)(dian)壓(ya)(ya)限制為12V。

2、紅(hong)(hong)色LED：按最低驅動電(dian)壓(ya)1.8V計(ji)算，3*1.8V=5.4V，則按常規電(dian)源電(dian)壓(ya)規格來看，6V電(dian)壓(ya)就可(ke)以了(le)。6-5.4V=0.6V，還(huan)可(ke)以加(jia)30歐(ou)姆的限流電(dian)阻。故(gu)紅(hong)(hong)色LED燈帶的最低電(dian)壓(ya)限制為6V。

3、藍色LED：與白色LED燈帶的最低電壓限(xian)制是(shi)一樣(yang)的，是(shi)12V電壓。

4、綠色LED：按最低驅(qu)動(dong)電壓2.9V計算，3*2.9V=8.7V，則按常(chang)規(gui)電源電壓規(gui)格來看(kan)，9V電壓還可以(yi)。9-8.7V=0.3V，還可以(yi)加15歐姆的(de)限(xian)流電阻。故光虹綠色LED燈(deng)帶(dai)的(de)最低電壓限(xian)制(zhi)為9V。

5、黃色LED：與光(guang)虹紅(hong)色LED燈帶的最低電壓限制是一樣，都(dou)是6V。

LED燈帶什么顏色好>>

二、6顆LED為一組的LED燈帶的最低電壓限制：

根據公(gong)式(shi)i(電(dian)(dian)(dian)(dian)(dian)流)=U(電(dian)(dian)(dian)(dian)(dian)壓)/R(電(dian)(dian)(dian)(dian)(dian)阻(zu)),電(dian)(dian)(dian)(dian)(dian)壓相(xiang)同(tong)時，電(dian)(dian)(dian)(dian)(dian)阻(zu)大(da)則(ze)電(dian)(dian)(dian)(dian)(dian)流小(xiao)，電(dian)(dian)(dian)(dian)(dian)阻(zu)小(xiao)則(ze)電(dian)(dian)(dian)(dian)(dian)流大(da)；電(dian)(dian)(dian)(dian)(dian)阻(zu)相(xiang)同(tong)時，電(dian)(dian)(dian)(dian)(dian)壓大(da)則(ze)電(dian)(dian)(dian)(dian)(dian)流大(da)，電(dian)(dian)(dian)(dian)(dian)壓小(xiao)則(ze)電(dian)(dian)(dian)(dian)(dian)流小(xiao)；電(dian)(dian)(dian)(dian)(dian)流相(xiang)同(tong)時，電(dian)(dian)(dian)(dian)(dian)阻(zu)大(da)則(ze)分配的電(dian)(dian)(dian)(dian)(dian)壓大(da)

1、白(bai)(bai)色(se)LED：按最(zui)低驅動(dong)電(dian)壓(ya)計算：6*3.0=18V，如果(guo)(guo)光虹LED燈(deng)帶的供電(dian)電(dian)壓(ya)是18V，則沒有辦(ban)法再(zai)加限(xian)(xian)流電(dian)阻了。如果(guo)(guo)其它組(zu)LED燈(deng)帶有損壞的話，就會(hui)(hui)造成這一組(zu)LED燈(deng)帶的電(dian)流加大而燒壞LED。但(dan)是如果(guo)(guo)加了限(xian)(xian)流電(dian)阻，就會(hui)(hui)低于LED的最(zui)低驅動(dong)驅動(dong)電(dian)壓(ya)，會(hui)(hui)影響LED燈(deng)帶的發光強度和發光效果(guo)(guo)。因此，白(bai)(bai)色(se)LED燈(deng)帶的最(zui)低電(dian)壓(ya)限(xian)(xian)制(zhi)為24V。

2、紅色(se)LED：按最低(di)驅動電(dian)(dian)(dian)壓(ya)(ya)1.8V計算，6*1.8V=10.8V，則(ze)按常規(gui)電(dian)(dian)(dian)源電(dian)(dian)(dian)壓(ya)(ya)規(gui)格(ge)來看，需要12V電(dian)(dian)(dian)壓(ya)(ya)。12-10.8V=1.2V，還可(ke)以加60歐(ou)姆的限(xian)流電(dian)(dian)(dian)阻。故紅色(se)LED燈帶的最低(di)電(dian)(dian)(dian)壓(ya)(ya)限(xian)制為(wei)12V。

3、藍色LED：與(yu)光虹白色LED燈帶的(de)最低(di)電壓(ya)限制是(shi)(shi)一樣(yang)的(de)，是(shi)(shi)24V電壓(ya)。

4、綠色(se)LED：按最(zui)低驅動電(dian)壓(ya)2.9V計算，6*2.9V=17.4V，則按常(chang)規電(dian)源電(dian)壓(ya)規格(ge)來看，18V電(dian)壓(ya)還可以(yi)(yi)。18-17.4V=0.6V，還可以(yi)(yi)加(jia)30歐姆的限流電(dian)阻。故綠色(se)LED燈帶的最(zui)低電(dian)壓(ya)限制18V。

5、黃色(se)LED：與紅色(se)LED燈帶的最低(di)電壓限制是一樣，都是12V。

三、LED燈帶功率

功率(lv)是(shi)(shi)能量的(de)(de)(de)(de)傳(chuan)輸率(lv)的(de)(de)(de)(de)度(du)量，在直(zhi)流(liu)(liu)電(dian)路(lu)中它是(shi)(shi)電(dian)壓(ya)(ya)V和(he)電(dian)流(liu)(liu)A的(de)(de)(de)(de)乘積；在交流(liu)(liu)系統里則要復雜的(de)(de)(de)(de)多了。不(bu)管是(shi)(shi)高壓(ya)(ya)還是(shi)(shi)低壓(ya)(ya)led燈帶(dai)(dai)，它們(men)(men)都(dou)是(shi)(shi)將交流(liu)(liu)轉化為直(zhi)流(liu)(liu)來進行工作的(de)(de)(de)(de)。 所以，led燈帶(dai)(dai)功率(lv)計算可以用： P=UI 每個廠家由于(yu)芯片不(bu)一樣(yang)(yang)，會導致led燈珠(zhu)工作電(dian)壓(ya)(ya)和(he)工作電(dian)流(liu)(liu)不(bu)一樣(yang)(yang)。所以，市場上同樣(yang)(yang)一米(mi)led燈帶(dai)(dai)，它們(men)(men)的(de)(de)(de)(de)功率(lv)會不(bu)盡相同。

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。

LED燈帶安裝圖解>>