Q2. Find resistance value to get desired gain
For the ideal op-amp given below, what is the value of resistance Rx to get gain V_{out}/V_{in} = -A_f ? (Assume A_fR_1R_2+R_3 ).

Question

Q2. Find resistance value to get desired gain 
 For the ideal op-amp given below, what is the value of resistance Rx to get gain    V_{out}/V_{in} = -A_f  ? (Assume   A_fR_1>R_2+R_3 ).

Answer

\frac{R_2R_3}{R_2 + R_3}

Answer

\frac{R_2R_3}{R_1 + A_f(R_2 + R_3)}

Answer

-\frac{R_2R_3}{R_1 + R_2 + R_3}

Answer

-\frac{R_1R_2}{A_fR_1 + R_2 + R_3}

Answer

-\frac{R_2R_3}{-A_fR_1 + R_2 + R_3}

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Q2. Find resistance value to get desired gain For the ideal op-amp given below...

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