led燈珠老化燒掉 led燈珠全部燒壞是什么原因 |
| 發布時間:2022-08-27 11:31:42 |
大家好今天(tian)來介紹led燈珠(zhu)老化(hua)燒掉(led燈珠(zhu)壞了直接(jie)短接(jie)可以(yi)嗎)的(de)(de)問(wen)題，以(yi)下是小編對此問(wen)題的(de)(de)歸(gui)納整(zheng)理，來看看吧。 文章目錄列表:
led燈珠燒掉了用什么方法可以短接一下不要短接(jie)，短接(jie)過了(le)還(huan)是(shi)(shi)容易壞。短接(jie)只要用刀片把燈(deng)(deng)珠表面黃色的刮去，就(jiu)會現金屬(shu)兩頭，直(zhi)接(jie)加些焊錫就(jiu)可(ke)以(yi)了(le)。短接(jie)后燈(deng)(deng)就(jiu)能發光(guang)了(le)，但是(shi)(shi)很容易損壞。
LED燈珠燒壞是什么情況看流經燈(deng)珠(zhu)的電流是(shi)不(bu)是(shi)超過(guo)燈(deng)珠(zhu)的最(zui)大允許電流 看燈(deng)珠(zhu)的工(gong)作電壓(ya)是(shi)不(bu)是(shi)超過(guo)了的最(zui)大允許電壓(ya) 如果電流、電壓(ya)都在(zai)其許可范圍內，就要看燈(deng)珠(zhu)的散熱(re)情況，溫度太高，時間長一點就會(hui)燒燈(deng)珠(zhu)。 客廳的LED燈珠經常被燒壞該怎么修理電路需串聯一個多大的電阻提問者說，客(ke)廳(ting)里的(de)LED燈的(de)燈珠(zhu)經(jing)常被燒壞，出現這(zhe)種情況一般是LED燈珠(zhu)的(de)驅動電(dian)流(liu)偏大，再加(jia)上(shang)燈珠(zhu)可能散熱不好(hao)，這(zhe)樣便(bian)會導致燈珠(zhu)燒壞。 簡單的(de)阻容降壓(ya)恒(heng)流(liu)驅動電(dian)路。 現(xian)在的(de)(de)(de)LED燈質量好的(de)(de)(de)其(qi)恒流(liu)(liu)(liu)(liu)驅動(dong)器一(yi)(yi)般都采用(yong)專用(yong)的(de)(de)(de)恒流(liu)(liu)(liu)(liu)驅動(dong)IC設計(ji)，驅動(dong)電(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)比較穩定(ding)，一(yi)(yi)般不(bu)(bu)容(rong)易損壞(huai)，而一(yi)(yi)些廉價的(de)(de)(de)LED燈有(you)不(bu)(bu)少都是采用(yong)上圖所(suo)示的(de)(de)(de)簡單的(de)(de)(de)阻(zu)容(rong)降壓(ya)(ya)恒流(liu)(liu)(liu)(liu)驅動(dong)電(dian)(dian)(dian)(dian)路。這(zhe)種驅動(dong)電(dian)(dian)(dian)(dian)路的(de)(de)(de)驅動(dong)電(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)不(bu)(bu)太穩定(ding)，其(qi)大小與電(dian)(dian)(dian)(dian)容(rong)C1的(de)(de)(de)容(rong)量、市電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)壓(ya)(ya)的(de)(de)(de)高(gao)低有(you)關(guan)。若(ruo)遇(yu)到市電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)壓(ya)(ya)偏高(gao)，或C1取值偏大，這(zhe)樣便(bian)會導致流(liu)(liu)(liu)(liu)過(guo)燈珠(zhu)的(de)(de)(de)電(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)變大，而LED燈珠(zhu)在燈罩內，若(ruo)燈珠(zhu)的(de)(de)(de)散熱不(bu)(bu)好，工作時間一(yi)(yi)長便(bian)可能會被燒壞(huai)。 簡單的(de)(de)(de)LED恒流(liu)(liu)(liu)(liu)驅動(dong)電(dian)(dian)(dian)(dian)路板(ban)。 出現這種情況，我們可以用(yong)萬用(yong)表測(ce)量(liang)一(yi)(yi)下(xia)市(shi)電(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)是(shi)否偏高，降壓(ya)電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)的(de)容(rong)量(liang)與燈(deng)(deng)珠(zhu)的(de)工(gong)作電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)是(shi)否匹(pi)配。若所在(zai)(zai)地區的(de)市(shi)電(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)經常偏高，可以將電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)C1的(de)容(rong)量(liang)適(shi)當減小一(yi)(yi)些(xie)。為了(le)防(fang)止開燈(deng)(deng)瞬間浪涌電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)損(sun)壞燈(deng)(deng)珠(zhu)，亦可以適(shi)當增大電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)C2的(de)容(rong)量(liang)。另外，若C1找(zhao)不到合適(shi)容(rong)量(liang)的(de)電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)，亦可以在(zai)(zai)C2兩端并(bing)聯一(yi)(yi)個阻(zu)值及功率合適(shi)的(de)電(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)（具體(ti)阻(zu)值視實(shi)際情況而(er)定），這樣(yang)可以對流(liu)(liu)入LED燈(deng)(deng)珠(zhu)的(de)電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)進行分流(liu)(liu)，從而(er)減小燈(deng)(deng)珠(zhu)的(de)工(gong)作電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)，降低其發熱量(liang)。 若想了解(jie)更(geng)多的電(dian)子電(dian)路及元器件知識，請關注我，謝(xie)謝(xie)。 你好5730燈珠老是燒掉怎么回事請教老師燒壞了(le)芯(xin)(xin)片(pian)(pian)主要(yao)(yao)(yao)(yao)原因(yin)：電(dian)(dian)(dian)(dian)(dian)流過(guo)大(da)一(yi)般(ban)都(dou)是(shi)(shi)靜(jing)(jing)電(dian)(dian)(dian)(dian)(dian)對(dui)LED芯(xin)(xin)片(pian)(pian)造成了(le)損(sun)(sun)(sun)傷，使LED芯(xin)(xin)片(pian)(pian)的(de)(de)PN結失(shi)(shi)效，漏電(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)流增大(da)，5730貼(tie)片(pian)(pian)燈(deng)(deng)珠(zhu)變(bian)成了(le)一(yi)個電(dian)(dian)(dian)(dian)(dian)阻，這種情況(kuang)一(yi)般(ban)不(bu)(bu)會影響到(dao)其(qi)它的(de)(de)5730貼(tie)片(pian)(pian)燈(deng)(deng)珠(zhu)的(de)(de)工作(zuo)(zuo)。靜(jing)(jing)電(dian)(dian)(dian)(dian)(dian)是(shi)(shi)一(yi)種危害極大(da)的(de)(de)魔鬼，全世(shi)界因(yin)為(wei)靜(jing)(jing)電(dian)(dian)(dian)(dian)(dian)損(sun)(sun)(sun)壞的(de)(de)電(dian)(dian)(dian)(dian)(dian)子元器(qi)件不(bu)(bu)計其(qi)數，造成數千萬(wan)美元的(de)(de)經濟損(sun)(sun)(sun)失(shi)(shi)。所以(yi)防(fang)止靜(jing)(jing)電(dian)(dian)(dian)(dian)(dian)損(sun)(sun)(sun)壞電(dian)(dian)(dian)(dian)(dian)子元器(qi)件，是(shi)(shi)電(dian)(dian)(dian)(dian)(dian)子行(xing)業一(yi)項很重(zhong)要(yao)(yao)(yao)(yao)的(de)(de)工作(zuo)(zuo)，LED封裝、應用的(de)(de)企業千萬(wan)不(bu)(bu)要(yao)(yao)(yao)(yao)掉以(yi)輕心。任(ren)何一(yi)個環節出問題，都(dou)將造成對(dui)5730貼(tie)片(pian)(pian)燈(deng)(deng)珠(zhu)的(de)(de)損(sun)(sun)(sun)害，使5730貼(tie)片(pian)(pian)燈(deng)(deng)珠(zhu)性能變(bian)壞甚至失(shi)(shi)效。我(wo)們知(zhi)道人(ren)體（ESD）靜(jing)(jing)電(dian)(dian)(dian)(dian)(dian)可以(yi)達(da)到(dao)三(san)千伏左右，足可以(yi)將LED芯(xin)(xin)片(pian)(pian)擊穿損(sun)(sun)(sun)壞，在LED封裝生(sheng)產線，各類設備的(de)(de)接(jie)地電(dian)(dian)(dian)(dian)(dian)阻是(shi)(shi)否(fou)符合要(yao)(yao)(yao)(yao)求，這也是(shi)(shi)很重(zhong)要(yao)(yao)(yao)(yao)的(de)(de)，一(yi)般(ban)要(yao)(yao)(yao)(yao)求接(jie)地電(dian)(dian)(dian)(dian)(dian)阻為(wei)4歐姆(mu)(mu)，有些要(yao)(yao)(yao)(yao)求高的(de)(de)場合其(qi)接(jie)地電(dian)(dian)(dian)(dian)(dian)阻甚至要(yao)(yao)(yao)(yao)達(da)到(dao)≤2歐姆(mu)(mu)。 為什么LED燈珠老是燒這樣的問題是容抗限流型LED燈的常(chang)見(jian)問題。一般說不好解決(jue)，可換(huan)用(yong)不同廠(chang)家的產品試試，最好多花點錢，買恒流電(dian)源的LED燈泡。 以上就是(shi)小編(bian)對(dui)于(yu)led燈珠(zhu)老化燒掉(diao)(led燈珠(zhu)壞了(le)直(zhi)接(jie)短接(jie)可以嗎)問題(ti)和相關問題(ti)的解(jie)答了(le)，希望對(dui)你有(you)用 |
