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Diffstat (limited to '1691/CH3/EX3.11/e3_11.sce')
-rwxr-xr-x | 1691/CH3/EX3.11/e3_11.sce | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/1691/CH3/EX3.11/e3_11.sce b/1691/CH3/EX3.11/e3_11.sce new file mode 100755 index 000000000..0b212bbd5 --- /dev/null +++ b/1691/CH3/EX3.11/e3_11.sce @@ -0,0 +1,29 @@ +//example3.11
+clc
+disp("For the npn silicon transistors,")
+disp("V_CE(sat)=0.3 V and V_BE(sat)=0.7 V = V_rho")
+disp("While V_BE(cut-in)=0.5 V= V_gamma ...Referring Table 3.1")
+i=(12-0.3-0.7+0.5)/(2000+200)
+format(6)
+disp(i,"(I''_B)(in mA)=(V_CC-V_CE(sat)-V_rho-V_gamma)/(R_c+r''_bb)=")
+disp("Hence the overshoot in base voltage of Q2 is:")
+d=(5.227*200*10^-3)+0.7-0.5
+format(7)
+disp(d,"delta(in V)=(I''_b*r''_bb)+(V_rho)-(V_gamma)=")
+v=12-(5.227*2)
+disp(v,"V_C1(in V)=(V_CC)-(I''_B*R_C)=")
+disp("These are the values of various voltages just after the circuit returns back to stable state i.e at t=T.")
+disp("The width of the output pulse")
+t=(0.69*20*10^3)*(1000*10^-12)
+format(11)
+disp(t,"T(in sec)=(0.69*20*10^-3)*(1000*10^-12)=")
+disp("The voltage waveforms at base of Q2, Q1 and collector of Q2, Q1 are shown in the fig 3.87 on previous page.")
+disp("The overshoot in V_C1 is (delta'') and is same as (delta) ")
+disp("Therefore, (delta'')=1.2454 V")
+f=(-(14.7*20*10^3)/(40*10^3))+((12*20*10^3)/(40*10^3))
+format(5)
+disp(f,"V_F(in V)=((-V_BB*R1)/(R1+R2))+((V_CC*R2)/(R1+R2))= ")
+disp("V_C2=V_CE(sat)=0.3 in stable state")
+c=(((12*20000)/(40000))+((54.692*2000)/(22000)))
+format(7)
+disp(c,"V_C2(in V)[in quasi-stable state]=((V_CC*R1)/(R1+R2))+((V_delta*R_C)/(R1+R_C))= ")
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