Automat de scara (releu de timp cu impuls)

Majoritatea blocurilor au “automate de scara” care prin apasarea unui buton aprinde becurile de la etaje o perioAda de 2-3 minute..

In revista TEHNIUM INTERNATIONAL- martie 1999, este articolul “Automat de scara”, scris de dl. Alexandru Marculescu…

Modul de conectare al montajului in circuit este urmatoarea:

Ca sa intelegem functionarea schemei, ne uitam la un tutorial despre 555. Constatam ca este schema clasica de monostabil:

si timpul cat releul va fi atras:

Redesenand cu programul Autodesk Eagle PCB

 

O schema, care contine si partea de alimentare, realizata cu programul Livewire:

Montajul, respectiv cablajul (AICI gasiti cablajul la scara 1:1):

O varianta, tot cu 555, dar alimentata direct de la retea, gasim la http://www.electronicafacil.net/circuitos/Temporizador-luces-escalera.html:

Vedeti simularea funcíonarii [ntr-un filmulet, care se numeste automat de scara !

 

 

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