大家好我是(shi)小編一(yi)夢今(jin)天我們來介紹帶(dai)電(dian)容led燈珠 24wled燈用多大驅動的(de)問(wen)題(ti)，以下就是(shi)一(yi)夢對此(ci)問(wen)題(ti)和相關問(wen)題(ti)的(de)歸納整理,一(yi)起來看(kan)看(kan)吧。

文章目錄導航:

• 1、怎樣測led 串聯燈珠好壞
• 2、24wled燈驅動電容多大
• 3、led燈珠壞一個可以用電容代替嗎
• 4、led燈一頭有電阻一頭有電容怎么判斷正負極
• 5、條形led燈壞了怎么維修

怎樣測led 串聯燈珠好壞

用(yong)(yong)(yong)電(dian)(dian)(dian)(dian)容(rong)和電(dian)(dian)(dian)(dian)阻檔測。5730燈(deng)珠(zhu)正向(xiang)(xiang)電(dian)(dian)(dian)(dian)容(rong)是約0.5至(zhi)(zhi)0.1nF、反(fan)向(xiang)(xiang)電(dian)(dian)(dian)(dian)容(rong)比正向(xiang)(xiang)電(dian)(dian)(dian)(dian)容(rong)稍小、不(bu)(bu)同品牌和型號測出(chu)的不(bu)(bu)一(yi)(yi)樣、有(you)(you)的正反(fan)向(xiang)(xiang)電(dian)(dian)(dian)(dian)容(rong)都(dou)(dou)可(ke)低至(zhi)(zhi)約0.07nF。是以上(shang)值的、能(neng)用(yong)(yong)(yong)3.3伏(fu)(fu)電(dian)(dian)(dian)(dian)點亮(liang)且亮(liang)度(du)正常(chang)、都(dou)(dou)算正常(chang)。用(yong)(yong)(yong)3.3伏(fu)(fu)電(dian)(dian)(dian)(dian)試纔是關鍵。3.3伏(fu)(fu)電(dian)(dian)(dian)(dian)竝不(bu)(bu)難找、電(dian)(dian)(dian)(dian)腦上(shang)就有(you)(you)、一(yi)(yi)般充電(dian)(dian)(dian)(dian)器上(shang)都(dou)(dou)有(you)(you)、編(bian)程器上(shang)亦(yi)有(you)(you)。沒辦(ban)法接出(chu)3.3伏(fu)(fu)電(dian)(dian)(dian)(dian)的話、用(yong)(yong)(yong)5伏(fu)(fu)電(dian)(dian)(dian)(dian)亦(yi)可(ke)。一(yi)(yi)般手(shou)機充電(dian)(dian)(dian)(dian)器輸(shu)出(chu)電(dian)(dian)(dian)(dian)壓是5伏(fu)(fu)、5伏(fu)(fu)電(dian)(dian)(dian)(dian)試一(yi)(yi)下(xia)竝不(bu)(bu)會燒(shao)壞燈(deng)珠(zhu)。5730燈(deng)珠(zhu)大多(duo)可(ke)承受6.667伏(fu)(fu)電(dian)(dian)(dian)(dian)。正常(chang)LED燈(deng)珠(zhu)冷態正反(fan)向(xiang)(xiang)電(dian)(dian)(dian)(dian)阻都(dou)(dou)很(hen)大、用(yong)(yong)(yong)一(yi)(yi)般萬用(yong)(yong)(yong)表測不(bu)(bu)出(chu)。壞LED燈(deng)珠(zhu)有(you)(you)的仍能(neng)亮(liang)、但亮(liang)度(du)不(bu)(bu)足、能(neng)被一(yi)(yi)般萬用(yong)(yong)(yong)表測出(chu)冷態電(dian)(dian)(dian)(dian)阻。

24wled燈驅動電容多大

您是做什么養(yang)的LED燈啊(a)是那種用(yong)電(dian)容降(jiang)壓的小(xiao)功率LED燈嗎如果是，我提供以下(xia)數據給您參考：（以下(xia)均指(zhi)4.8mm[5mm]草帽型(xing)燈珠，電(dian)流16mA，工作電(dian)壓220V，串聯接(jie)法）

1）3238只(zhi)燈(deng)珠，用(yong)0.47uF(474pF)

2）4050只燈珠，用0.56uF(564pF)

3）60只燈珠(zhu)，用0.68uF(684pF)

4）7080只燈珠，用0.82uF（824pF）

僅僅依靠簡單的降壓(ya)整流電(dian)路(lu)，工(gong)作回不可靠，應該再加入一個穩流電(dian)路(lu)在其中(zhong)為佳。

選(xuan)擇CBB型聚丙烯電容器(qi)，其(qi)交流高頻特性好，耐壓要選(xuan)則(ze)400V以(yi)上的即(ji)可

—— 給您參考

led燈珠壞一個可以用電容代替嗎

不可(ke)以(yi)(yi)，因為LED燈(deng)(deng)珠都是(shi)直流(liu)供電(dian)(dian)(dian)，電(dian)(dian)(dian)容是(shi)隔離直流(liu)通(tong)過交(jiao)流(liu)的(de)。如果燈(deng)(deng)條(tiao)或燈(deng)(deng)帶(dai)有(you)一個燈(deng)(deng)珠損壞(huai)，可(ke)以(yi)(yi)臨(lin)時(shi)短接損壞(huai)的(de)燈(deng)(deng)珠。達到可(ke)以(yi)(yi)點(dian)亮的(de)目的(de)。但這樣使(shi)(shi)用(yong)會使(shi)(shi)其他燈(deng)(deng)珠電(dian)(dian)(dian)壓升高，各燈(deng)(deng)珠的(de)電(dian)(dian)(dian)流(liu)增大，降低(di)整(zheng)個燈(deng)(deng)條(tiao)燈(deng)(deng)帶(dai)的(de)使(shi)(shi)用(yong)壽命。最好(hao)直接更(geng)換損壞(huai)的(de)燈(deng)(deng)珠。

led燈一頭有電阻一頭有電容怎么判斷正負極

看(kan)電(dian)容的(de)(de)正負(fu)極，連接(jie)的(de)(de)是(shi)電(dian)容正極的(de)(de)是(shi)LED正極，連接(jie)的(de)(de)如果是(shi)電(dian)容負(fu)極LED也是(shi)負(fu)極

條形led燈壞了怎么維修

1、LED燈(deng)珠損壞(huai)。這是很常見的故障，一(yi)般LED燈(deng)珠燒壞(huai)時(shi)，表面(mian)上會有黑點，仔細觀(guan)察能夠區分出來，對于這種(zhong)故障維修(xiu)，需要配(pei)備(bei)一(yi)把烙鐵，將燒壞(huai)的燈(deng)珠拆下來更換即可(ke)，若沒有LED燈(deng)珠怎么辦可(ke)使用150Ω左右的電阻代替，若是恒流源驅動(dong)可(ke)以直接短接。

2、濾(lv)(lv)波電(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)失效。簡易的(de)(de)LED燈一般將交流電(dian)(dian)(dian)經過(guo)容(rong)(rong)(rong)(rong)(rong)阻降(jiang)壓后直(zhi)接整流，然后通過(guo)電(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)濾(lv)(lv)波給LED燈珠供(gong)電(dian)(dian)(dian)。若該(gai)濾(lv)(lv)波電(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)失效會導致電(dian)(dian)(dian)壓不穩，直(zhi)流電(dian)(dian)(dian)壓偏低(di)，從而使LED燈變(bian)暗(an)。用(yong)(yong)萬用(yong)(yong)表的(de)(de)電(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)檔測(ce)量該(gai)濾(lv)(lv)波電(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)的(de)(de)容(rong)(rong)(rong)(rong)(rong)量，若誤(wu)差較大(da)(da)，誤(wu)差大(da)(da)于(yu)30%左(zuo)右說明該(gai)電(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)已變(bian)質，找(zhao)一個(ge)耐壓值以(yi)及容(rong)(rong)(rong)(rong)(rong)量都大(da)(da)于(yu)等于(yu)該(gai)電(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)參數的(de)(de)電(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)換上即可。

3、容阻(zu)(zu)降(jiang)壓(ya)模塊損壞，容阻(zu)(zu)降(jiang)壓(ya)模塊由(you)一(yi)個電(dian)(dian)容電(dian)(dian)容和電(dian)(dian)阻(zu)(zu)并聯組成，可(ke)用萬用表測量其電(dian)(dian)容、電(dian)(dian)阻(zu)(zu)是否損壞，若損壞，找個參數(shu)相當的電(dian)(dian)容、電(dian)(dian)阻(zu)(zu)換(huan)上即可(ke)。

以(yi)上就是天成小(xiao)編對于帶電(dian)容(rong)led燈珠 24wled燈用(yong)(yong)多大驅動問(wen)題(ti)和相關(guan)問(wen)題(ti)的解答了，希望對你有用(yong)(yong) 【責任(ren)編輯(ji)：一(yi)夢】