Exercices de pr\u00e9paration au contr\u00f4le 3.doc - 243-320 Exercices de prparation au contrle 3 1 Identifiez(type polarit etc les transistors reprsents par

Exercices de préparation au contrôle 3.doc - 243-320...

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243-320 Exercices de préparation au contrôle 3 1 . Identifiez (type, polarité, etc.) les transistors représentés par les symboles 1- _______________________________________________________________ 2- _______________________________________________________________ 3- _______________________________________________________________ 4- _______________________________________________________________ 2 . Calculez l’impédance d’entrée la plus approchée possible de l’amplificateur représenté ci- dessous.
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3 . Pour un transistor N-JFET, les feuilles de données du fabricant indiquent un I DSS moyen de 2mA et un V p d’environ –2,0V. Calculez, pour le circuit ci-dessous, une valeur de R S qui assure son bon fonctionnement, c’est-à-dire un V GS négatif d’environ –0,6V. V G = __________________ I DS = __________________ R S = __________________ V S = __________________ V GS = ________-0,6V______
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4 . Calculez le gain en tension A v à vide et en charge du circuit ci-dessous. 5 . Calculez les valeurs de R t (4,7k ≤ R
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  • Fall '18
  • Transistor, Donnee, Possibilité et impossibilité

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