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Old 01-12-2011, 07:21 PM   #15
nikolaivanic
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Join Date: Nov 2010
Posts: 624
Default Re: problem u mikrofonskom signalu, pistanje

Ako se cuje pistanje, moguce je da jedna od cevi osciluje i tada moze doci do pregrevanja. Razlozi su razni, najjednostavnije je probati zamenu. Ako ne uspe, verovatno se javlja neka pozitivna povratna sprega sto nije nemoguce na tako malom prostoru. U tom slucaju se smanjuje ulazni otpornik (do neke granice) ubacuje kond na resetku, dodaje negativna povratna sprega, smanjuje anodni otpornik... ili nesto slicno ali to mora da radi poznavalac cevi... nije mi bas najjasnija potreba za cak dve duple triode, al ajd. pojacanje je toliko da moze odmah na izlazni stepen od 100W

Last edited by nikolaivanic; 01-12-2011 at 07:24 PM.
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