From b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b Mon Sep 17 00:00:00 2001
From: priyanka
Date: Wed, 24 Jun 2015 15:03:17 +0530
Subject: initial commit / add all books

---
 1514/CH12/EX12.2/12_2.sce | 49 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 49 insertions(+)
 create mode 100755 1514/CH12/EX12.2/12_2.sce

(limited to '1514/CH12/EX12.2')

diff --git a/1514/CH12/EX12.2/12_2.sce b/1514/CH12/EX12.2/12_2.sce
new file mode 100755
index 000000000..1e868dddd
--- /dev/null
+++ b/1514/CH12/EX12.2/12_2.sce
@@ -0,0 +1,49 @@
+//chapter 12
+//example 12.2
+//page 364
+clear all;
+clc ;
+//given values in ohm
+Zi2=967;
+hfe1=100;
+R3=12000;
+hie1=1000;
+R9=150;
+hfe2=100;
+hie2=1000;
+R7=R3;
+RL=120*10^3;
+R10=R7;
+R1=RL;
+R2=39*10^3;
+//voltage gain of stage 1
+A1=-hfe1*(R3*Zi2/(R3+Zi2))/(hie1+R9*(1+hfe1));
+printf("\nvoltage gain of stage 1=%.1f",A1);
+//voltage gain of stage 2
+Rp=(1/R7)+(1/RL)+(1/R10);
+A2=-hfe2*(1/Rp)/hie2;
+printf("\nvoltage gain of stage 2=%d",A2);
+//open loop gain 
+A1=-5.5;A2=-571;
+M = (A1)*(A2) ;
+printf("\nopen loop gain =%d",M);
+//feedback factor
+B=R9 /(R9 + R10);
+b=B^-1;
+printf("\nfeedback factor(beta)=1/%d",b)
+Av1=1/B;//for M*beta >>1
+Av2=M/(1+M*B);//closed loop gain
+printf("\nclosed loop gain=%d or %d if M*beta >>1",ceil(Av2),Av1);
+Zb=hie1;
+Zin=(1+M*B)*Zb;
+//input impedance
+Zi=1/((1/Zin)+(1/R1)+(1/R2))*10^-3;
+printf("\ninput impedance=%d kohm",ceil(Zi));
+//output impedance 
+Zout=(R7*R10/(R7+R10))/(1+M*B);
+printf("\noutput impedance =%d ohm",ceil(Zout));
+XC1=Zi/10;
+f1=100;//Hz
+C1=10^3/(2*%pi *f1*XC1);
+printf("\ncapacitor C1=%.2f microF,use standard value 1 microF",C1)
+
-- 
cgit