1 files changed, 21 insertions, 0 deletions
diff --git a/2534/CH7/EX7.5/Ex7_5.sce b/2534/CH7/EX7.5/Ex7_5.sce
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+++ b/2534/CH7/EX7.5/Ex7_5.sce
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+//Ex7_5
+clc
+VBE = 0.6
+beta = 100
+disp("beta = "+string(beta))//current gain
+disp("VBE = "+string(VBE)+"V")//voltage across base and emitter
+//according to given circuit;
+VCC = 12
+RC = 5*10^3
+disp("VCC = "+string(VCC)+"V")//collector supply voltage
+disp("RC = "+string(RC)+"ohm")//collector resistance
+// optimum operating point is half of (VCC/RC)
+IC = (1/2)*(VCC/RC)
+disp("IC = VCC/(2*RC) = "+string(IC)+"A")//collector current at optimum operating point
+IB = IC/beta
+disp("IB = IC/beta = "+string(IB)+"A")//base current
+//from the closed circuit in the given fig., we have
+disp("IB*RB = VCC - VBE")
+RB = (VCC - VBE)/IB 
+disp("RB = (VCC - VBE)/IB = "+string(RB)+"ohm")//veriable resistance across base-collector as given in circuit
+