1 files changed, 29 insertions, 0 deletions
diff --git a/1757/CH6/EX6.6/EX6_6.sce b/1757/CH6/EX6.6/EX6_6.sce
new file mode 100755
index 000000000..9b54afac1
--- /dev/null
+++ b/1757/CH6/EX6.6/EX6_6.sce
@@ -0,0 +1,29 @@
+// Example6.6   // Design a op-amp circuit to provide the output voltage Vo = V2 - 3 V1 with Ri1 =Ri2 = 100*10^3
+clc;
+clear;
+close;
+Ri1 = 100*10^3 ; // ohm
+Ri2 = 100*10^3 ; // ohm
+// the i/p resistance 
+R1 = Ri1 ;
+R3 = Ri2 ;
+
+// Vo = V2 - 3 V1;                                    equation 1
+// the output of the summer circuit is given as
+// Vo = [(R4/(R3+R4)*(1+(R2/R1))*Vi2-(R2/R1)*Vi1]        equation 2
+
+// compare equation 1 and 2  of Vo we get 
+// (R4/(R3+R4)*(1+(R2/R1)) = 1 ;                           equation  3
+// R2/R1 = 3 ;                                           equation 4
+
+// by subsituting the value of R1 and R3 in equation 3 and 4
+
+// from equation  4
+R2 = 3*R1 ;
+disp('the value of resistance R2 is  = '+string(R2)+' ohm');
+
+// from equation  3
+R4 = (100*10^3)/3 ;
+disp('the value of resistance R4 is  = '+string(R4)+' ohm');
+
+