Question

Part II
Operational Amplifiers
The Non-Inverting Configuration

c) For the circuit below find the values of iI, v1, i1, i2, vO, iL, and iO (All the blue ones). Also find the voltage gain the current gain and the power gain

d) It is required to connect a transducer having an open-circuit voltage of 1 V and a source resistance of 1 MΩ to a load of 1-kΩ resistance. Find the load voltage if the connection is done (a) directly and (b) through a unity-gain voltage follower.

Answer 1

Summary - it is basic problem so I have shown step by step solution
l_I = 0 [due to infinite input Impedance] v_a = v_b = 1 v [due to virtual ground] l_1 = v_a/1 = 1 m A K C L at v_a NODE 1- 0/1 + 1 - v_0/g = 0 v_0 = 10 v l_2 = v_0 - v_a/s = 1 m A \r\n l_L = v_0/I = 10 m A x_0 = r_L + l_2 r_0 = 12 m A voltage gain = v_0 V_I = 10 current gain = I_0/I_i = infinity [power gain = infinity] v_0 = 10^3/10^3 + 10^6 times 1 v_0 = 10^-3 volt \r\n voltage follower [v_0 = 1 v] due to virtual ground]