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Question 2 (50 marks) With reference to the circuit in Fig. 2, Ri = 1 kN, Rf = 5 kN and Cf = 1 nF. 35% (a) calculate the dc voltage gain H1(0) = Vout/Vs1; 35% (b) calculate the dc voltage gain H2(0) = Vout/s2; 30% (c) calculate the output voltage Vout(t) when Vs1 = -0.8 V and Vs2 = 1.2 V. Cf Ri RF OPAMP Ri + Vsi Vs2 Rf c Vout Figure 2 H1(0) H2(0) Vout(t)
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