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Sursa boost LED


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Salut, m-a sunat un coleg cu o problema: la sursa LED ridicatoare din 12V la 40V s-a ars dioda SCH. de 1A. Era la 60V, asa ca a cumparat una de 3A/100V. Si aceasta se incalzeste puternic, forma de unda in drena fiind corecta iar dupa redresare nu are riplu. LED-urile lumineaza corect. Ati intalnit un defect de acest tip?

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Salut, aventuri de pensionar! Dioda era atat de arsa ca nu a putut citi codul. Schema nu este pe net. A mers la magazinul de pe M. D. unde vanzatorul, si el electronist, i-a dat cea mai rapida dioda-MUR460. Colegul mi-a spus la telefon ca sigur a luat o dioda schottky de 3A/100V!!!!! A mai cautat pe net si a gasit pe un forum ca dioda este SB160, de aceea eu am postat pe forum: nu intelegeam de ce o dioda SCH. de 3A se incalzeste acolo! A cumparat de la alt magazin exact SR160 si aparatul functioneaza.

Scuze pt. deranj, eu am fost insa la mijloc.

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Corectare greseli scriere
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