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nr4

tranzistor ars

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cum pot sa-mi dau seama daca un tranzistor e ars (ex: irfp9240 , irfp240) ?

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Pt fet-uri cum e de ex irfp240 faci montajul din atasament . Cu cursorul potentiometrul la masa nu trebuie sa apara nici o tensiune pe rez de 220 ohmi. Rotind potentiometrul in sens invers (spre + pt cel de tip n si spre - pt cel de tip p) ar trebui ca la un moment dat sa inceapa sa apara tensiune pe rez de 220 ohmi; daca vei roti si mai mult pe rez ar trebui sa masori aprox tensiunea sursei de alimentare - adica tranzistorul e saturat . Daca nu se intampla ce am zis mai sus , tranzistorul nu e bun.Pt fet canal p te uiti la "test p" iar pt fet canal n la "test n" .

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Guest Vasile

Mutat la componente, va rog sa nu mai postati unde nu trebuie :snakeman:

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