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Postautor: arek 59 » wt 17 lip 2007, 13:08

Witam. Jaką moc uzyskam na tranzystorach 2sa1943 i 2sc5200 przy napięciu +/- 50V i głośniku 4 omowym. Planuję założyć po dwie pary tych tranzystorów na kanał i przy napięciu +/- 50V i głośników 4 omowyn uzyskam 300 wat? Czy to możliwe!!!
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Postautor: Andy » wt 17 lip 2007, 17:39

300W raczej jest nierealne. Jeśli 50V mamy w spoczynku, to biorąc pod uwagę spadek napięcia pod obciążeniem, który będzie pewnie kilkuwoltowy (zależnie od wydajności zasilacza), jeszcze napięcie nasycenia tranzystorów, tak więc realnie można przyjąć, że użyteczny zakres zmian napięcia na wyjściu będzie powiedzmy ok. 42Vx2. Przy takich danych moc wyjściowa sinus na 4 omach będzie ((42/(SQR(2))^2) /4 = 218W.
Tyle mówi matematyka 8)
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Postautor: arek 59 » śr 18 lip 2007, 17:35

Dzięki za opowiedz. :D To z 200w wystarczy mi. Trafo mam 600w 2*33V, kondensatory 15000uF/63V. Tranzystory 2sa1943 i 2sc5200 po dwie pary na kanał wystarczą, czy ktoś ma inne propozycje? :? Jeszcze jedno pytanko!!! Ile mogą kosztować te tranzystory?
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Postautor: Andy » śr 18 lip 2007, 17:49

Ja je kupowałem w .
Cena 5zł/szt. podejrzanie niska, ale tranzystory rzeczywiście wyglądają na oryginały.
pozdrawiam
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Postautor: arek 59 » czw 19 lip 2007, 11:23

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Postautor: Andy » czw 19 lip 2007, 13:19

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Postautor: arek 59 » czw 19 lip 2007, 14:55

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Postautor: Andy » czw 19 lip 2007, 15:06

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Postautor: arek 59 » czw 19 lip 2007, 18:33

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Postautor: arek 59 » pt 20 lip 2007, 9:48

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