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diff --git a/863/CH4/EX4.8/Ex4_8.txt b/863/CH4/EX4.8/Ex4_8.txt
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+++ b/863/CH4/EX4.8/Ex4_8.txt
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+//Caption:Calculate Rc,Rb,and Cc
+//Ex4.8
+clc;
+clear;
+close;
+Vcc=10//Collector voltage(in volts)
+Vce=0.2//Saturated collector emitter voltage(in volts)
+Ic=10//Collector current(in mA)
+Vbe=0.7//Base emitter voltage(in volts)
+hfe=100
+Pw=1//Pulse width(in ms)
+Vi=4//Input voltage(in volts)
+Rc=(Vcc-Vce)*1000/Ic
+Ib=Ic*1000/hfe
+Rb=(Vcc-Vbe)*1000/Ib
+Vb=Vi-Vbe-0.5
+I=(Vcc+Vi)/Rb
+Cc=I*Pw/Vb
+disp(Cc,Rb,Rc,'Rc(in ohm),Rb(in kilo ohm),Cc(in micro farad)=')
+\ No newline at end of file