Guest tr1ppo Posted May 11, 2007 Share Posted May 11, 2007 Sal!Am 2 tda uri 7294 si vreau sa le tai banda de la 50hz in jos sa se auda numai de la 50hz .... in sus .. ma poate ajuta cineva ? Link to comment
Guest Boby Posted May 12, 2007 Share Posted May 12, 2007 Salut foloseste un filtru activ cu amplificatoare operationale :smt006 Link to comment
Guest tr1ppo Posted May 12, 2007 Share Posted May 12, 2007 eu ma gandeam sa inseriez un condesator pe intrare dar nu stiu exact de cat presupun ca este un calcul matematic ... Link to comment
cirip Posted May 12, 2007 Share Posted May 12, 2007 Posteaza schema concreta. Sunt multe moduri prin care se poate taia banda de la 50Hz in jos. Nu ai nevoie de OpAmp suplimentar. Se poate "aranja" direct banda amplifului de putere.Cirip Link to comment
Guest Boby Posted May 12, 2007 Share Posted May 12, 2007 Salut da se poate si asa dar nu stii cat e de sigur ca reusesti ...asa faci un filtru activ cu amplificatoareoperationale ...chiar si cu 741 ca na daca nu iti trebe high - end merge si asa eu nu am scaner dar da-mi adresa si iti trimit prin posta ...astept,bafta! :smt006 Link to comment
niq_ro Posted May 13, 2007 Share Posted May 13, 2007 http://en.wikipedia.org/wiki/High-pass_filter http://hyperphysics.phy-astr.gsu.edu/hb ... ilcap.html Link to comment
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