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| author | priyanka | 2015-06-24 15:03:17 +0530 |
|---|---|---|
| committer | priyanka | 2015-06-24 15:03:17 +0530 |
| commit | b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b (patch) | |
| tree | ab291cffc65280e58ac82470ba63fbcca7805165 /2885/CH6/EX6.12 | |
| download | Scilab-TBC-Uploads-b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b.tar.gz Scilab-TBC-Uploads-b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b.tar.bz2 Scilab-TBC-Uploads-b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b.zip | |
initial commit / add all books
Diffstat (limited to '2885/CH6/EX6.12')
| -rwxr-xr-x | 2885/CH6/EX6.12/ex6_12.sce | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/2885/CH6/EX6.12/ex6_12.sce b/2885/CH6/EX6.12/ex6_12.sce new file mode 100755 index 000000000..3873d7513 --- /dev/null +++ b/2885/CH6/EX6.12/ex6_12.sce @@ -0,0 +1,40 @@ +
+//Solve the voltage divider accurately by applying thevenin's theorem
+clear;
+clc;
+//soltion
+//given
+B=100; //dc beta
+Rc=2*10^3;//ohm //resistor connected to collector
+R1=10*10^3;//ohm //voltage divider resistor 1
+R2=1*10^3;//ohm //voltage divider resistor 2
+Re=200;//ohm //resistor connected to emitter
+Vcc=10;//V //Voltage supply across the collector resistor
+Vbe=0.3;//V //base to emitter voltage
+
+Vth=Vcc*R2/(R1+R2);
+Rth=R1*R2/(R1+R2);
+
+printf("\nThevenin equivalent voltage Vth = %.5f V",Vth);
+printf("\nThevenin equivalent resistance Rth = %.2f ohm",Rth);
+
+Ib=(Vth-Vbe)/(Rth+(1+B)*Re);
+Ic=B*Ib;
+Ie=Ic+Ib;
+Vce=Vcc-Ic*Rc-Ie*Re;
+printf("\nThe accurate value of Ic = %.5f mA",Ic*10^3);
+printf("\nThe accurate value of Vce = %.6f V",Vce);
+Icp=3*10^-3; // Current calculated by voltage divider in previous example
+Vcep=3.4; // Voltage calculated by voltage divider in previous example
+Err_Ic=(Ic-Icp)*100/Ic;
+Err_Vce=(Vce-Vcep)*100/Vce;
+printf("\nError in Ic= %.1f percent\n",Err_Ic);
+printf("Error in Vce= %.0f percent",Err_Vce);
+
+// The errors and The accurate values are different
+// because of the approaximation in Vth and Rth in book
+
+// In Book Ic = 2.8436 mA and Vce = 3.73839 V
+// Error in Ic = -5.5%
+// Error in Vce = +9%
+
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