initial commit / add all books

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+//example6.19

+clc

+disp("Using equation (2) from section 6.7, we can determine I_BQ.")

+i=(18-0.7)/(1.2*10^3)

+format(10)

+disp(i,"I_BQ(in A)=")

+i=40*14.4167

+format(7)

+disp(i,"Now (I_CQ)[in mA]=(beta*I_BQ)=")

+v=18-(576.67*16*10^-3)

+disp(v,"And (V_CEQ)[in V]=(V_CC)-(I_CQ*R_L)=")

+p=18*576.67

+disp(p,"So  P_dc(in W)=(V_CC)*(I_CQ)=")

+disp("This is the input power.")

+disp("Now input a.c. voltage causes a base current of 5mA rms")

+disp("Therefore (I_b)_rms=5 mA")

+i=40*5

+disp(i,"Therefore i_c_rms(in mA)=40*5=")

+disp("This is nothing but the output collector current,rms value I_rms")

+disp("Therefore I_rms = 200mA")

+disp("Using equation (13) from section 6.8, we can write,")

+p=16*(200*10^-3)^2

+disp(p,"P_ac(in W)=(I_rms^2)^R_L=")

+disp("This is the power delivered to the load.")

+disp("Hence the efficiency of the amplifier is,")

+n=(64000*10^-3)/10.38

+disp(n,"%eta=(P_ac*100)/P_dc= ")