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Amplificator 200 - 500w

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Un amic m-a rugat sa-l ajut la construirea unei statii audio ,procurind toate piesele necesare realizarii statiei,conform schemei din atasament. Solicit celor care au facut o statie audio cu aceasta schema si specialistilor in amplificatoare sa ma ajute cu idei,pareri,solutii privind realizare unei statii 2x400W,fara preamplificator(primeste semnal dintr-un Mixer) .O prima parere este cu privire la alimentare:2x49Vca =2x70Vcc Va multumesc

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Schema este ok, daca se respecta valorile tuturor pieselor v-a iesi un amplif foarte bun.Transformatorul recomand de minim 1200W cu secundar 2x50Vac, sau chiar mai mult putin 2x53...55Vac ca v-a scadea in sarcina pentru 2x400W/4ohm, filtraj minim 10000uF.

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Transformatorul este de 1350W si v-a fii bobinat 2x55V cu priza mediana la 2x49.Am nevoie si de protectie pe iesire,va rog recomandati-mi ceva aplicabil la schema.multumesc

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Este exact dupa schema de 400W alimentata la 2x80Vcc scoate peste 400W(limitata de utilizator din circ.de intrare),functionind cu racire fortata.Amicul meu e multumit de ea dupa probele facute in functionare.

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BD249C au tensiunea maxima 100v, eu nu am decat 62V/ramura, deci o sa vina 200V finalii si 124V alimentarea.

O sa fie 100V finalii si 124V alimentarea. Tensiunea de pe finali nu-i constanta si egala cu Ualim decat in repaus; in sarcina poate atinge(depinde de schema) 2xUalim. Cu BD249C puteti alimenta pana la ca. 2x55V. (UCER=115V)
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