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Ombladon2002

Variator turatie

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Acum cativa ani am facut un variator de turatie pentru 2-3 coolere de PC,schema era foarte simpla,adica un tranzistor BD139 si un potentiometru,folosind tranzistori de putere mare nu as putea face unul pentru 24V si 30A? Daca pun mai multi tranzistori de acelasi fel in paralel,amperajul se aduna?

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O sursa variabila liniara nu e recomandata deoarece disipa caldura foarte mare. Dvs aveti nevoie de o sursa variabila in comutatie.

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...Daca pun mai multi tranzistori de acelasi fel in paralel,amperajul se aduna?

Sigur ca da. Curentul total absorbit, va fi suma curentilor trasi prin cele n tranzistoare puse in paralel. Nu ti se pare firesc?

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cauta pwm controller.o sa gasesti o gramada de scheme

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