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(Solved): 1. The OP-amp circuit in the following figure is used to generate a sinusoidal signal.Show the condi ...



1. The OP-amp circuit in the following figure is used to generate a sinusoidal signal.
Show the condition of oscillation and derive the expression for the frequency of oscillation and the gain needed to maintain the oscillation as a function of C1, C2, C3, R1, R2, R3, R4 and R5.
•2. Design an oscillator based on this circuit to obtain a frequency of 1 kHz. We must consider R1 = R2 = R3 = R and C1 = C2 = C3= C. give the values ??of all the components of the circuit according to the standardized values ??of appendix A
•3. Propose a modification of the circuit to ensure oscillation immediately when starting the circuit and explain the principle of its operation. Give the modified scheme?
Problème5 (27 points: /18./4.5./4.5)
- 1. On utilise le circuit à ampli-OP de la figure suivante pour générer un signal sinus
Problème5 (27 points: /18./4.5./4.5) - 1. On utilise le circuit à ampli-OP de la figure suivante pour générer un signal sinusoidal. Montrez la condition d'oscillation et déduisez l'expression de la fréquence d'oscillation et le gain nécessaire pour maintenir l'oscillation en fonction de et R5. - 2. Concevez un oscillateur à base de ce circuit pour obtenir une fréquence de . On doit considérer et . donnez les valeurs de tous les composants du circuit selon les valeurs normalisées de l'annexe A - 3. Proposez une modification du circuit pour garantir l'oscillation immédiatement au démarrage du circuit et expliquez le principe de son fonctionnement. Donnez le schéma modifié?


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Q. 1Answer. The main advantage of this oscillator is that the frequency can be varied in the range of 10Hz to about 1MHz whereas in
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