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ELFORUM - Forumul electronistilor

Conversie anaog-digital cu comparatoare


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Vreau sa convertesc un semnal analogic in 2 semnale digitale , astfel:-daca semnal analog depaseste pragul de referinta -sa avem impuls pozitiv cu tranzitie de la low la high-daca semnal analog coboara sub pragul de referinta , sa avem alt impuls de la low la high

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Ai putea sa folosesti schema din atasament, in care U1,U2,U3 si U4 sunt comparatoare obisnuite, de preferat 4 intr-un IC (ex: LM239,LM339,TLC354).Durata impulsului de la iesire se regleaza din C1-R3, C2-R4. Cu valorile din schema impulsul dureaza ~160 ms.

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