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ELFORUM - Forumul electronistilor

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Buna ziua, ma intereseaza o schema electrica care sa functioneze la 12vcc asemanatoare cu cea de la usa de la masina care, cand deschid usa sa porneasca o sonerie, numai ca vreau ca dupa 5 sec sa se opreasca soneria cu usa deschisa si dupa ce inchid usa si o deschid din nou sa porneasca soneria din nou tot 5 sec, practic sa isi repete ciclul. Va rog daca ma poate ajuta cineva cu o schema. Astept sugesti, Va multumesc.

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am vazut in comert ceva chinezarii care fac treaba asta partea cu soneria se fixa pe tocul usii iar magnetul pe usa si face destul scandal, desi aparent sint mici ca volum

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Daca e nevoie de un reglaj fin al timpului, in loc de 24k poti pune un potentiometru de 22k in serie cu o rezistenta fixa de 10k.
Daca ai timp sa intri in "amanunte", un rezumat al foii de catalog a circuitului 4541 gasesti aici:

https://postimg.cc/YGvGFcd5

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