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+//Chapter 8_Applications of Operational Amplifier

+//Caption : Vp and Vo

+//Example8.8: In the circuit of non-inverting summing Op-Amp, V1=+2V, V2=-4V, V3=+5V. input resistors for all the three input signal are same and are equal to 1 kilo Ohm.The feedback resistor Rf is 2 kilo ohm. Determine the voltage Vp at the noninverting pin of the Op-Amp and the output Vo. Assume ideal Op=Amp.

+//Solution:

+clear;

+clc;

+Rf=2*10^3;//feedback resistor

+R1=1*10^3;

+R2=R1;

+R3=R2;

+V1=2;

+V2=-4;

+V3=5;

+n=3;//no of inputs

+Vp=(Rf/R1*V1+Rf/R2*V2+Rf/R3*V3)/n;

+Vo=(1+Rf/R1)*Vp;

+disp('V',Vp,'voltage at noninverting pin is:')

+disp('V',Vo,'output voltage voltage of noninverting summing Op-Amp is:')
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