floring_69 Posted October 12, 2012 Share Posted October 12, 2012 Salut!Ma puteti ajuta va rog cu o schema pentru alimentare asimetrica de la un transformator normal.Am un transformator la 220Vc.a. cu 2 iesiri (normal/uzual) care scoate in secundar 12V~Pentru ca sa alimentez un montaj audio cu TDA 2616 am nevoie de (+)12Vcc, (-)12Vcc si firul comun.Exista vreun artificiu care se face pe puntea redresoare ca sa obtin o alimentare asimetrica?Atasez si schema amplificatorului pe care doresc sa-l realizez.Va multumesc. Quote Link to comment Share on other sites More sharing options...
miron1947 Posted October 12, 2012 Share Posted October 12, 2012 Da, dar monoalternanta. Quote Link to comment Share on other sites More sharing options...
floring_69 Posted October 12, 2012 Author Share Posted October 12, 2012 Da, dar [attachment=0]Red mono + si -.JPG[/attachment] monoalternanta.ma ajuta sau nu la montajul audio? Quote Link to comment Share on other sites More sharing options...
miron1947 Posted October 12, 2012 Share Posted October 12, 2012 Pai il alimenteaza, dar trebuie un filtraj mai eficient(condensatori de capacitate mai mare). Quote Link to comment Share on other sites More sharing options...
floring_69 Posted October 12, 2012 Author Share Posted October 12, 2012 Pai il alimenteaza, dar trebuie un filtraj mai eficient(condensatori de capacitate mai mare).Ce valoare recomanzi pentru condensatoarele din schema trimisa de tine? Quote Link to comment Share on other sites More sharing options...
cristian_draghiescu Posted October 12, 2012 Share Posted October 12, 2012 TDA 2616 admite şi alimentare de la o sursă de tensiune asimetrică : http://www.dz863.com/circuits-9-8171178 ... l-Circuit/ Quote Link to comment Share on other sites More sharing options...
miron1947 Posted October 12, 2012 Share Posted October 12, 2012 Corect, dar trebuie adaugati condensatori de iesire. Quote Link to comment Share on other sites More sharing options...
floring_69 Posted October 12, 2012 Author Share Posted October 12, 2012 Corect, [attachment=0]TDA2616.JPG[/attachment] dar trebuie adaugati condensatori de iesire.condensatorii de 680 Mf de pe difuzoare trebuiesc pusi? Daca da la ce tensiune si chiar valoare, 680 este ciudata. Quote Link to comment Share on other sites More sharing options...
miron1947 Posted October 12, 2012 Share Posted October 12, 2012 Da, altfel aveti componenta continua pe difuzoare.Puteti utiliza si valori mai mari(ex.1000uF), 680uF este limita inferioara pentru a reda basii neatenuati.Tensiunea de lucru a condensatoarelor de iesire, nu o depaseste pe cea de alimentare, deci pot avea aceiasi tensiune de lucru cu cei de filtraj. Quote Link to comment Share on other sites More sharing options...
floring_69 Posted October 12, 2012 Author Share Posted October 12, 2012 Multumesc mult pentru ajutor! Quote Link to comment Share on other sites More sharing options...
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