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ELFORUM - Forumul electronistilor
Guest cata31boss

vreau si eu o schema cu finali 2sb817 si 2sd1047

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Poti folosi ori ce schema de amplificator cu bipolari la care sa nu depaseasca tensiunea de alimentare +-/60VCC! Atentie ca la o tensiune de alimentare de +-/55VCC nu va rezista o pereche de finali, iti trebe 2 perechii cel putin! Scheme poti gasi aici: viewtopic.php?f=5&t=20181

2sb817 are Uce 140V,Ic 12A,P60w rezista si se comporta bine la o tensiune de +/-60vdoua perechi se pun pentru a rezista la un curent mai mare deci o putere mai mare si o disipatie termica pe masuranu are nici o treaba pusul in paralel cu tensiune de alimentare,atita timp cit tranzistorul functioneaza pina la 140v,ai o marja de siguranta de 20v plus tensiunea care cade pe rezistentele din emitor plus tensiunea care o avem intre colectorul si emitorul tranzistoruluieste cam la limita dar va functiona cu +/- 60vo zi buna!
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