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(Solved): a. (12 marks) For the op amp circuit shown in Figure 5, i. (5 marks) Calculat ...
a. (12 marks) For the op amp circuit shown in Figure 5, i. (5 marks) Calculate \( i_{0} \) if \( R_{f}=4 \mathrm{k} \Omega \). ii. (7 marks) Calculate the value of the feedback resistor \( R_{f} \) if it is adjusted until the op amp reaches positive saturation. Figure 5
Expert Answer
solutions Negative feedback present we can apply virtual ground concepts V+=V- using voltage division rule , v+=6/(6+2)*-5=-3.75v v-=-3.75v Rf=4kohm 4