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ELFORUM - Forumul electronistilor

Ring Detector


Guest RalCorp
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Guest RalCorp

Salut, am nevoie de o schema care sa imi actioneze un releu timp de 1 secunda atunci cand primesc ton de apel pe o linie telefonica analogica. ( Doresc sa actionez un device prin apelarea unui nr dedicat de telefon fix, fara ca acesta sa raspunda ) Orice parere este bine primita.Multumesc.

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Guest RalCorp

Teoretic aceasta este ce-a mai simpla schema, doar ca nu stiu cum sa pacalesc releul sa nu "joace" in ritmul pe care-l da tonul de apel:) Ideal ar fi ca sa aclanseze o data si sa inghete pret de cateva secunde ( pana cand inchid eu telefonul )

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Guest RalCorp

Redreseaza tensiunea de apel si actionea un monostabil cu o constanta de timp aleasa de tine !

Ceva de genul acesta?

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Scuze dar nu prea am experienta in electronica, ai putea sa faci o schita?:)

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