quinn Posted September 8, 2007 Share Posted September 8, 2007 Vad ca mai in toate schemele de aprindere electronica comutatorul este omniprezentul bu526.De ce ?Este cel mai indicat ,un bu208 e mai slab?Voi ce recomandati in lipsa lui?Va multumesc!L.E. Eventual un mos-fet daca e mai eficient! Link to comment Share on other sites More sharing options...
Laci Posted September 9, 2007 Share Posted September 9, 2007 BU208 este mai "slab", poti sa pui un BU508, suporta tensiune mai mare, dar are beta mai mic, trebuie ales unul cu beta(factor de amplificare curent) >15,BU508D are si dioda in antiparalel, numai ca capsula e alta...BU526 are 400V/8A si beta minim de 15Un MOS este mai eficient si mai rapid, dar la grila are nevoie de tensiune min.10V, este sensibil la tensiunea grila-sursa, daca ai un varf de peste 20V, se strapunge.Pt. ca nu cunosc schema, ma abtin de o parere pro sau contra. Link to comment Share on other sites More sharing options...
quinn Posted September 9, 2007 Author Share Posted September 9, 2007 Aceasta e schema: Link to comment Share on other sites More sharing options...
Laci Posted September 9, 2007 Share Posted September 9, 2007 Acolo nu merge MOS-ul, incearca cu BU508A Link to comment Share on other sites More sharing options...
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