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ELFORUM - Forumul electronistilor

Beep scurt si zgomotos

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Salutare. Vreau sa construiesc un circuit care odata ce un termostat se deschide (nu mai conduce curentul) sa faca sa se auda un sunet puternic ca de avertizare insa pret de 5-10 secunde. Banuiesc ca asta s-ar putea realiza cu doua timere 555 sau un 556 (unul pentru modul monostabil iar celalalt pentru astabil). Alta metoda mai simpla nu stiti? Daca nu ... imi puteti arata un circuit cu timerele respective care sa serveasca ce vreau eu, va rog frumos? De asemenea, cum as putea face ca odata cu acel termostat deschis sa se aprinda si-un LED? Multumesc

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