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E 0501 are mai multe variante ?

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Am confruntat schema descarcata de pe forum cu aparatul de acasa si am constatat ca nu se prea potrivesc valorile din schema cu cele din aparat ( am verificat valorile rezistentelor ), de aici si intrebarea.Pe langa faptul ca lipseste schema alimentatorului, care contine un EFT 214 cu punct verde, se constata imediat nepotrivirea, caci formatorul de semnal dreptunghiular, are 6 tranzistoare, nu 4, asa cum apare pe schema.Am rugamintea sa se arate care este rolul semiraglabililor, pentru a putea obtine o forma optima a semnalului de iesire.

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