cosmin_cosmin_1 Posted January 6, 2007 Share Posted January 6, 2007 Vreau sa-mi finalizez frecventmetrul realizat cu atmega162 si mi-ar mai trebui circuitul de intrare, cel ce preia semnalul si il transforma intr-unul potrivit microcontrollerului. Am gasit mai multe variante in diverse scheme de pe net, dar nu era niciuna explicata sau nu mi se parea completa. As vrea sa am doua intrari, una din ele sa si preamplifice semnalul.Din experienta voastra, cam ce mi-ati recomanda?Multumesc Link to comment
Guest mister_rf Posted January 6, 2007 Share Posted January 6, 2007 Un circuit de intrare gasesti aici: http://www.apogeekits.com/counter_article.htm http://www.apogeekits.com/PDF_Files/fre ... ounter.pdf Link to comment
cosmin_cosmin_1 Posted January 27, 2007 Author Share Posted January 27, 2007 mister_rf , multumesc. Ai idee cam ce amplitudine maxima a semnalului suporta la intrare circuitul? Am vazut ca scrie minim 50mV, dar de valoarea maxima nu scrie nimic. Link to comment
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