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authorpriyanka2015-06-24 15:03:17 +0530
committerpriyanka2015-06-24 15:03:17 +0530
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+clc
+disp("Example 3.73")
+printf("\n")
+disp("Find the Ve, Ic,Vce & Vc. Draw a DC load line for Voltage divider circuit")
+printf("Given\n")
+//given
+Vcc=18
+Vbe=0.7
+hFE=50
+R1=33*10^3
+R2=12*10^3
+Rc=1.2*10^3
+Re=10^3
+//thevenin voltage
+Vt=(Vcc*R2)/(R1+R2)
+//thevenin resistance
+Rt=(R1*R2)/(R1+R2)
+//base current
+Ib=(Vt-Vbe)/(Rt+(1+hFE)*Re)
+//collector current
+Icq=hFE*Ib
+//emitter current
+Ie=Ib+Icq
+//emitter voltage
+Ve=Ie*Re
+//collector to emitter voltage
+Vceq=Vcc-(Icq*Rc)-(Ie*Re)
+//collector voltage
+Vc=Vce+Ve
+//to draw DC load line
+Ic1=Vcc/(Rc+Re)
+Vce=[Vcc Vceq 0]
+Ic=[0 Icq Ic1]
+printf("Q(%f volt,%f ampere)\n",Vceq,Icq)
+plot2d(Vce, Ic)
+xlabel("Vce in volt")
+ylabel("Ic in ampere")
+xtitle("DC load line for base bias circuit")
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