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IsBlacks

Alimentator Tensiune Reglabila Didactica

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buna ziua, am cumparat dintr-un targ de vechituri un asemenea alimentator, intrebarea mea este urmatoarea cum scot cei 6v 300mA pentru ca am 2 mufe negre, iar la celelalte valori de tensiune negru si rosu

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Are cineva schema acestui stabilizator ca am si eu unul si sunt dezlipite o multime de fire? macar niste poze din interior daca se poate? (nu ca ar fi un alimentator grozav dar este mic si nu te prea derajeaza cand lucrezi)

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Heer.Cel mai simplu masurati tensiunile in secundar traf.Daca utilizati 6 VAC pastrati bornele.Altfel anulati!

La fel bornele 3V 5mA nu le vad rostul.

Tensiunea 2-12V foarte probabil e realizata cu un montaj tranzistor-zenner.

Recomand sa dati tot afara si sa puneti un modul cu LM317.Puteti folosi o placuta din comert.E sub 10 lei.De pe ea dati jos semireglabilul si puneti in loc un potentiometru de 4,7-5K.

La varianta aceasta nu aveti nevoie decat sa gasiti conexiunile de tensiune maxima de pe secundar.Ceva intre 12-20 Vac.Asta o folositi pentru alimentarea modului.

 

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