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

---
 181/CH1/EX1.29/example1_29.sce | 32 ++++++++++++++++++++++++++++++++
 181/CH1/EX1.29/example1_29.txt |  6 ++++++
 2 files changed, 38 insertions(+)
 create mode 100755 181/CH1/EX1.29/example1_29.sce
 create mode 100755 181/CH1/EX1.29/example1_29.txt

(limited to '181/CH1/EX1.29')

diff --git a/181/CH1/EX1.29/example1_29.sce b/181/CH1/EX1.29/example1_29.sce
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@@ -0,0 +1,32 @@
+// Find conductivity of intrinsic germanium
+// Basic Electronics
+// By Debashis De
+// First Edition, 2010
+// Dorling Kindersley Pvt. Ltd. India
+// Example 1-29 in page 53
+
+clear; clc; close;
+
+// Data given
+ni=2.5*10^13; // Intrinsic concentration /cm^3
+e=1.6*10^-19; // Charge on an electron in C
+mu_n=3800; // Mobility of electrons in cm^2/Vs
+mu_p=1800; // Mobility of holes in cm^2/Vs
+N_D=4.41*10^15; // Concentration of donor atoms in Ge /cm^3
+
+// Calculation
+sigma=(ni*e)*(mu_n+mu_p);
+printf("(a)Intrinsic conductivity=%0.4f s/cm\n",sigma);
+p_0=(ni^2)/N_D;
+printf("p_0=%0.2e /cm^3\n",p_0);
+sigma1=N_D*e*mu_n;
+printf("(b)Since n_0>p_0, Conductivity=%0.2f s/cm\n",sigma1);
+n_0=(ni^2)/N_D;
+printf("With given acceptor impurity,\nn_0=%0.2e /cm^3\n",n_0);
+sigma2=N_D*e*mu_p;
+printf("(c)Since p_0>n_0, Conductivity=%0.2f s/cm",sigma2);
+
+// Result
+// (a) Conductivity in first case is 0.0224 s/cm
+// (b) Conductivity in second case is 2.68 s/cm
+// (c) Conductivity in third case is 1.27 s/cm
\ No newline at end of file
diff --git a/181/CH1/EX1.29/example1_29.txt b/181/CH1/EX1.29/example1_29.txt
new file mode 100755
index 000000000..722bc6f39
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+++ b/181/CH1/EX1.29/example1_29.txt
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+ (a)Intrinsic conductivity=0.0224 s/cm
+p_0=1.42e+011 /cm^3
+(b)Since n_0>p_0, Conductivity=2.68 s/cm
+With given acceptor impurity, 
+n_0=1.42e+011 /cm^3
+(c)Since p_0>n_0, Conductivity=1.27 s/cm 
\ No newline at end of file
-- 
cgit