initial commit / add all books

3 files changed, 39 insertions, 0 deletions

diff --git a/2414/CH4/EX4.5/Ex4_5.sce b/2414/CH4/EX4.5/Ex4_5.sce
new file mode 100755
index 000000000..f233a1701
--- /dev/null
+++ b/2414/CH4/EX4.5/Ex4_5.sce
@@ -0,0 +1,12 @@
+clc;

+clear all;

+//chapter 4

+//page no 120

+//example 4.5

+f=[500 2000 10000];    //frequency in Hz

+Af=1 ./sqrt(1+(f./1000)^8);   //Linear amplitude response

+AdBf=20*log10(Af);

+mprintf('   f,Hz     A(f)        AdB(f)\n')

+for i=1:3

+    mprintf(' %5i Hz   %.5f     %.3f dB\n',f(i),Af(i),AdBf(i))

+end

diff --git a/2414/CH4/EX4.6/Ex4_6.sce b/2414/CH4/EX4.6/Ex4_6.sce
new file mode 100755
index 000000000..a072f32fb
--- /dev/null
+++ b/2414/CH4/EX4.6/Ex4_6.sce
@@ -0,0 +1,15 @@
+clc;

+clear all;

+//chapter 4

+//page no 123

+//example 4.6

+L=4*10^-6;   //Henry

+C=9*10^-12;  //Farad

+R=20*10^3;    //ohm

+

+f0=1/(2*%pi*sqrt(L*C));    //frequency in Hz

+mprintf('(a) The resonant frequency is f0=%.2f  MHz\n',f0*10^-6)

+Q=R*sqrt(C/L)

+mprintf(' (b) The Q is %i\n',Q);

+B=f0/Q;

+mprintf(' (c) The 3-dB bandwidth is B=%i KHz\n',B*10^-3);

diff --git a/2414/CH4/EX4.7/Ex4_7.sce b/2414/CH4/EX4.7/Ex4_7.sce
new file mode 100755
index 000000000..36e0b8a5b
--- /dev/null
+++ b/2414/CH4/EX4.7/Ex4_7.sce
@@ -0,0 +1,12 @@
+clc;

+clear all;

+//chapter 4

+//page no 125

+//example 4.7

+//misprinted example number

+pulse_width=2*10^-6;    //second

+rise_time=10*10^-9;      //second

+B=.5/pulse_width;       //in Hz

+mprintf('(a) The aproximate bandwidth for coarse reproduction is B=%i  KHz\n',B*10^-3)

+B=.5/rise_time;

+mprintf(' (b) The aproximate bandwidth for fine reproduction is B=%i  MHz\n',B*10^-6)