LED控(kong)制系統(tong)(LED controller)就是通過芯片(pian)處理控(kong)制LED燈電(dian)路中的各(ge)個(ge)位置的開關。

1、低壓(ya)型產品大功率(lv)LED控制系統

　　低(di)(di)(di)壓(ya)型LED產(chan)品(pin)(pin)一般設(she)(she)計(ji)電(dian)(dian)壓(ya)12V-36V,每個(ge)(ge)回路(lu)(lu)LED數量3-6個(ge)(ge)串聯，用(yong)電(dian)(dian)阻降壓(ya)限(xian)流(liu)，每個(ge)(ge)回路(lu)(lu)電(dian)(dian)流(liu)20mA以下。一個(ge)(ge)LED產(chan)品(pin)(pin)由多個(ge)(ge)回路(lu)(lu)的(de)(de) LED組成，優點是低(di)(di)(di)壓(ya)，結(jie)構簡單，容(rong)易(yi)設(she)(she)計(ji)；缺(que)點是：產(chan)品(pin)(pin)規模大時電(dian)(dian)流(liu)很大，需要(yao)配置低(di)(di)(di)壓(ya)開關電(dian)(dian)源。由于產(chan)品(pin)(pin)的(de)(de)缺(que)點所限(xian)，低(di)(di)(di)壓(ya)不(bu)(bu)可能遠距離(li)輸(shu)電(dian)(dian)，都是局限(xian)于體(ti)積不(bu)(bu)大的(de)(de)產(chan)品(pin)(pin)上，如招牌文字、小圖案等(deng)。根據這個(ge)(ge)特點，控(kong)制(zhi)(zhi)(zhi)(zhi)器(qi)設(she)(she)計(ji)規格：12V的(de)(de)選(xuan)用(yong)75A/30V MOS功率管(guan)控(kong)制(zhi)(zhi)(zhi)(zhi)，輸(shu)出(chu)電(dian)(dian)流(liu)8A/路(lu)(lu)；24-36V選(xuan)用(yong)60A/50V MOS功率管(guan)控(kong)制(zhi)(zhi)(zhi)(zhi)，輸(shu)出(chu)電(dian)(dian)流(liu)5A/路(lu)(lu)。用(yong)戶可以根據以上規格選(xuan)定(ding)控(kong)制(zhi)(zhi)(zhi)(zhi)器(qi)的(de)(de)路(lu)(lu)數，跳變(bian)的(de)(de)可以選(xuan)購NE20低(di)(di)(di)壓(ya)系(xi)列(lie)、漸(jian)變(bian)的(de)(de)選(xuan)購NE10低(di)(di)(di)壓(ya)系(xi)列(lie)控(kong)制(zhi)(zhi)(zhi)(zhi)器(qi)即(ji)可。注意LED的(de)(de)必須是共陽(+)極(ji)連接(jie)法，控(kong)制(zhi)(zhi)(zhi)(zhi)器(qi)控(kong)制(zhi)(zhi)(zhi)(zhi)陰(-)極(ji)，控(kong)制(zhi)(zhi)(zhi)(zhi)器(qi)不(bu)(bu)包(bao)括低(di)(di)(di)壓(ya)電(dian)(dian)源。

2、高壓型產品LED控(kong)制系統(tong)

　　高壓(ya)(ya)型LED產品(pin)設計電(dian)(dian)(dian)壓(ya)(ya)是交流(liu)(liu)/直流(liu)(liu)220V電(dian)(dian)(dian)壓(ya)(ya)，每(mei)個(ge)回路(lu)LED數量36-48個(ge)串(chuan)聯，每(mei)個(ge)回路(lu)電(dian)(dian)(dian)流(liu)(liu)20mA以(yi)下(xia)，限(xian)(xian)流(liu)(liu)方(fang)(fang)式(shi)有兩(liang)種(zhong)，一(yi)種(zhong)是電(dian)(dian)(dian)阻(zu)限(xian)(xian)流(liu)(liu)，這種(zhong)方(fang)(fang)式(shi)電(dian)(dian)(dian)阻(zu)功耗(hao)較大，建議使(shi)用(yong)每(mei)4個(ge)LED串(chuan)接(jie)(jie)一(yi)個(ge)1/4W金屬模(mo)電(dian)(dian)(dian)阻(zu)，均勻分(fen)布(bu)散熱(re)，這種(zhong)接(jie)(jie)法(fa)在目前是最穩(wen)定可靠(kao)；另(ling)一(yi)種(zhong)是電(dian)(dian)(dian)阻(zu)電(dian)(dian)(dian)容串(chuan)聯限(xian)(xian)流(liu)(liu)，這種(zhong)接(jie)(jie)法(fa)大部分(fen)電(dian)(dian)(dian)壓(ya)(ya)降在電(dian)(dian)(dian)容上，電(dian)(dian)(dian)阻(zu)功耗(hao)小，只能(neng)用(yong)在穩(wen)定的長(chang)亮狀態，如(ru)果(guo)閃動電(dian)(dian)(dian)容儲能(neng)，反而電(dian)(dian)(dian)壓(ya)(ya)加倍，LED容易損壞。凡(fan)是使(shi)用(yong)LED控(kong)制卡的LED必須使(shi)用(yong)電(dian)(dian)(dian)阻(zu)限(xian)(xian)流(liu)(liu)方(fang)(fang)式(shi)，LED一(yi)般每(mei)個(ge)回路(lu)一(yi)米(mi)(mi)，功率5W，三色功率每(mei)米(mi)(mi)15W。常用(yong)漸(jian)變控(kong)制器NE112K控(kong)制直流(liu)(liu)1200W，NE103D交流(liu)(liu)負(fu)載(zai)4500W直流(liu)(liu)負(fu)載(zai)1500W，如(ru)果(guo)燈管閃動單元多(duo)就(jiu)使(shi)用(yong)NE112K，如(ru)果(guo)只需要整(zheng)體閃動就(jiu)使(shi)用(yong)NE103D。如(ru)果(guo)使(shi)用(yong)漸(jian)變方(fang)(fang)式(shi)，要注意負(fu)載(zai)匹配，霓虹燈和LED屏(ping)幕的發光分(fen)布(bu)特性不一(yi)樣，同一(yi)回路(lu)不能(neng)混接(jie)(jie)不同類型的負(fu)載(zai)。

3、低壓型(xing)產品串行(xing)LED控制系統

　　低壓型LED產(chan)品串行控制系統的(de)特點(dian)是控(kong)(kong)(kong)制(zhi)(zhi)路數多(duo)，利用串(chuan)行信號(hao)傳輸(shu)達到控(kong)(kong)(kong)制(zhi)(zhi)的(de)目的(de)，一般512單元(yuan)的(de)控(kong)(kong)(kong)制(zhi)(zhi)只需要4條(tiao)控(kong)(kong)(kong)制(zhi)(zhi)連線，串(chuan)行LED控(kong)(kong)(kong)制(zhi)(zhi)卡需要在(zai)LED的(de)光源板配有寄存器，控(kong)(kong)(kong)制(zhi)(zhi)器可選(xuan)用型號(hao)NE040S控(kong)(kong)(kong)制(zhi)(zhi)器，該(gai)控(kong)(kong)(kong)制(zhi)(zhi)卡的(de)**容量達到4096KBit,如(ru)果負載512單元(yuan)的(de)可以**實(shi)現8192楨畫面(mian)。