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ELFORUM - Forumul electronistilor

invertor sudură Stern WM200INVL


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  • 1 year later...
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Din ce m-am uitat eu la rusi nu seamana cu ce am eu

Sunt niste rezisente coapte pe o placuta montata vertical, banuiesc eu ca acolo e ceva legat de driver-ul IGBT-uril plus un mosfet care arata sarma D-S , dar fara schema e mai nasol ca nu stiu valorile acelor rezistente negre si ce o mai fi pe acolo

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L-am facut !

Problema era la sursa auxiliara care alimenteaza oscilatorul PWM, protectia si driverul. Era sursa facuta praf, am inlocuit 90% din ea

De-aia, fir'ar sa fie, sunt mai bune sursele auxiliare cu traf clasic.N-au zeci de componente ce pocnesc cand ti-e lumea mai draga!Nici cu piesele inlocuite,ca in cazul asta,nu esti sigur.Ca altfel de ce si-a dat duhul?De bune ce sunt piesele?

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