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------------------------------------------------------------------------------------------------------------------CICES..............EXERCICES..............EXERCICES..............EXERCICES..............EXER -------------------------------------------------------------------------------------------------------------------

INTERFACAGE :

1. Quel est le NL de T1 permettant la circulation d’un courant dans la diode de l’optocoupleur U3? Justifier …………………………………………………………………………………………………………………... …………………………………………………………………………………………………………………... …………………………………………………………………………………………………………………...

2. Dans le cas où un courant circule dans cette diode, vérifier l’état de saturation du transistor de U3 et préciser les valeurs des tensions VR9 et VR12. Ubreak = 15V ; U3 = U4 : CNX 36 ; VCEsat8 de U8F = 0V …………………………………………………………………………………………………………………... …………………………………………………………………………………………………………………... …………………………………………………………………………………………………………………... @FC D:\DOCUMENTS COURS\TF2\Exer INTERFACAGE.doc

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------------------------------------------------------------------------------------------------------------------CICES..............EXERCICES..............EXERCICES..............EXERCICES..............EXER ------------------------------------------------------------------------------------------------------------------…………………………………………………………………………………………………………………... …………………………………………………………………………………………………………………... …………………………………………………………………………………………………………………... …………………………………………………………………………………………………………………... …………………………………………………………………………………………………………………... …………………………………………………………………………………………………………………...

3. Ubreak = 0V. Indiquer l’état des transistors de U3 et U4. Donner la valeur de VR9 et VR12. …………………………………………………………………………………………………………………... …………………………………………………………………………………………………………………... …………………………………………………………………………………………………………………...

4. Compléter le tableau ci-dessous :

T0

Ubreak : +15V

NL0

+15V

NL1

0V

NL0

0V

NL1

S1

S2

Del

Photo T

AO

5. Citer les caractéristiques technologiques de : a) U11E …………………………………………………………………………………………………………………... …………………………………………………………………………………………………………………... b) U8F …………………………………………………………………………………………………………………... …………………………………………………………………………………………………………………..

@FC D:\DOCUMENTS COURS\TF2\Exer INTERFACAGE.doc

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exer_interfacage  

Ubreak = 15V ; U3 = U4 : CNX 36 ; VCEsat8 de U8F = 0V 2. Dans le cas où un courant circule dans cette diode, vérifier l’état de saturation d...

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