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ELFORUM - Forumul electronistilor

IR LED


Guest boyLed

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  • dorian 70

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LED -ul fiind o dioda se va alimenta cu plusul la anodul LED -ului si minusul la catod, fara a depasi 3V, dupa cum scrie in foaia de catalog, acest lucru se realizeaza pentru alimentarea la 5V prin inserierea unei rezistente.Cele 30 de LED -uri vor fi alimentate la 5V?Atentie si la tensiunea inversa, care este 5V, altfel spus daca se leaga gresit crapa instantaneu la 5V alimentare.

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Se prajesc fiinca se depaseste curentul limita.Solutia e urmatoarea :-inseriaza cate 2 leduri si grupul astfel obtinut inseriaza-l cu o rezistena de 20ohmi la 0,25W asa[attachment=0]IR 5V.pdf[/attachment]Atentie la polaritatea ledurilor !Grupurile astfel obtinute le montezi in paralel (15 grupuri) .

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