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ELFORUM - Forumul electronistilor

VFO A412


florinnn22

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cine ma ajuta si pe mine sa readuc la viata vfo-ul la un a412?tranzistori sunt buni, dar el nu vrea de nici o culoare sa produca oscilatii

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Vezi la comutatorul de benzi poate s-o fi slabit ceva pe acolo un contact imperfect si VFO-ul numai merge.Masoara tensiuni pe T1 , T2 , T3 , pe dioda varicap .

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nu, nu are trimeri, are niste condensatori in paralel cu fiecare bobina.am incercat fiecare bobina, poate sa fie de la tensiunea de alimentare??l-am alimentat direct dintr-o sursa de calc.

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