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ELFORUM - Forumul electronistilor
Sir john red

Elto futura 2450/ 200a

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Nu indrasnesc sa va cer o schema pentru acest invertor,stiind ca sunt pastrate mai bine decat secretele de la Fatima, dar poate cei cu experienta in domeniu au mai intalnit acest defect.Aparatul a avut arse 4 mosfet-uri din 10 de tip w21nm50n si rezistenta de incarcare 2r2/10w.Dupa ce am inlocuit rezistenta si toti cei 10 tz am pornit invertorul care functioneaza dar fara putere.Abia topeste un electrod de 2,5mm.Semnalul in grile pare a fi bun.Tensiunea pe iesire, masurata cu un Mavo 35 variaza in functie de pozitia cursorului potentiometrului, intre 38 si 64 volti.Cind se aprinde electrodul ventilatoarele tind sa se opreasca.Este normal asa? Ce credeti ca ar trebui sa mai verific?Cu respect...

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Corect,dar mai trebuie s-o si "dibuiesc". Din traful de curent pleaca doua trasee care trec pe sub ventilator si un radiator spre placa de comanda a driverelor(...} Verific la ce pin al integratului sg3846n duce (cred ca aici merge ) si revin.Cam ce valoare are rezistenta asta???Fara scheme inotam in ape tulburi....

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