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diff --git a/863/CH9/EX9.1/Ex9_1.sce b/863/CH9/EX9.1/Ex9_1.sce
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+//Caption:Design RC ramp generator
+//Ex9.1
+clc;
+clear;
+close;
+V=5//Output voltage(in volts)
+Vs=15//Supply voltage(in volts)
+R=100//Load resistance(in kilo ohm)
+v=3//Amplitude of triggering pulse(in volts)
+vb=0.5//Bse voltage(in volts)
+p=1//Pulse width(in ms)
+t=0.1//Time interval(in ms)
+vbe=0.7//Base emitter voltage(in volts)
+E=0.2//Initial voltage(in volts)
+e=5//Final voltage(in volts)
+hfe=50
+Il=V/R
+I1=100*Il/1000
+R1=(Vs-V)/(I1*1000)
+C1=p/(R1*log((Vs-E)/(Vs-e)))
+Ic=10*I1
+Ib=Ic/hfe
+Rb=(Vs-vbe)/(Ib*1000)
+Vbb=v-vbe-vb
+I=(Vs+v)/Rb
+C2=I*p/Vbb
+disp(C2,C1,R1,Rb,'Components required to design circuit are resistances Rb,R1(in kilo ohm) and Capacitors C1,C2(in micro farad)=')
+\ No newline at end of file