Practice (4.11): Determine the value of the external gain-setting resistor RG required for the IA in Fig. 4.32 to produce a gain of 200 when R = 25 k2. Table: 4.2: Summery of basic op amp circuits

In the circuit below, the operational amplifier is ideal with the output voltage limitations V*=12V and V-=-12V. D is an ideal diode. a) Derive the symbolic expression for Vo in terms of Vi. You should clearly show every step in your answer. b) For R₁ = 12 kn, RF = 3 kQ, R₁ = 5 KQ and with the V₁ = 8-sin(wt) input voltage signal, calculate Vo and draw Vo voltage waveform with respect to Vi specifying the important values on the axes on the plot(s). Every numerical value on the plot(s) should be explained in detail on your answer sheet. c) What is the function of this circuit? Considering its function, what is the most important drawback (if any) of this circuit? Explain your answer. Vi Ri RF D Vo RL

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find the gain

Q.2 A certain op-amp has an open-loop gain of 80,000. The maximum saturated output levels of this particular device are +12V when the dc supply voltages are 15V. If a differential voltage of 0.15 mV is applied between the inputs, what is the value of the output?