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ELFORUM - Forumul electronistilor

Sarma subtire...

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Am un traf caruia nu-i pot desface tolele (sunt sudate sau ceva de genu...). Avea vreo 28V. I-am mai scos din sarma pt a ajunge la 16V (cat imi trebuie mie). Problema e ca am nevoie de amperaj mai mare iar sarma lui e prea subtire. Ma intereseaza ce se intampla in cazul asta: o sa livreze amperajul cerut dar se va incinge, sau pot sa stau si in nas ca pana nu-i schimb sarma nu scot ce vreau de la el?

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trage curent mai mare decat ar trebui pana se incalzeste dupa care rezistivitatea cuprului creste si curentul scade pana ajunge la o valoare de echilibru. asta din cate stiu eu. asta daca nu il pui in scurt sa sa il fortezi sa traga o valoare mult prea mare pentru ce poate el, caz in care e posibil sa distrugi mecanic sarma, sa o intrerupi.

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