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ELFORUM - Forumul electronistilor

alimentare switch management HP


Guest raz3k

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Salutari tuturor, Am un switch hp cu management care s-a defectat.L-am desfacut si am constatat ca mosfet-ul K2645 si o rezistenta de 0.47 (pe care am inlocuit-o cu 0.66) sunt defecte, mosfetul era in scurt iar rezistenta nu conducea curent.Langa mosfet mai vad si un BT151x care nu este in scurt si pe anod primesc aprox 220 v dar pe ceilalti pini masurati cu anod-ul si cu masa puntei nu rezulta niciun curent continuu . Puntea nu este afectata, siguranta este ok. Neavand suficient know-how va intreb: La ce sa ma mai uit ?Atasata e si o poza cu placa pe partea de inalta tensiune.p.s. La pozitia SCR1 se afla BT-ul iar langa mosfet-ul.Multumesc.

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