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invertor de sudura lastek 1600


Guest costake
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Guest costake

Salutare tuturor.nu repar invertoare dar a crapat al meu.Amgasit stw20nc arse.Am scos tot am inlocuit ce mai era ars in comanda.Intrebarea mea este daca fara igbt-uri forma semnalului de comanda trebuie sa se modifice la actionarea reglajului de curent ca la mine nu se modifica.Multumesc celor ce se straduiesc sa dea o mina de ajutor.

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Guest costake

nu se modifica pwm-ul la actionarea potentiometrului..el merge pe umplere maxima care apoi se reduce cand primeste informatia de pe traful de curent(si sunt daca ai pe iesire).important e cum arata semnalul de comanda dupa driver(amplitudine,forma)....

MULTUMESC. O sa compar cu poze de pe alte scheme si o sa pun finalii.
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