2 files changed, 35 insertions, 0 deletions
diff --git a/181/CH2/EX2.18/example2_18.sce b/181/CH2/EX2.18/example2_18.sce
new file mode 100755
index 000000000..90286d15f
--- /dev/null
+++ b/181/CH2/EX2.18/example2_18.sce
@@ -0,0 +1,28 @@
+// Calculate forward currents for voltages
+// Basic Electronics
+// By Debashis De
+// First Edition, 2010
+// Dorling Kindersley Pvt. Ltd. India
+// Example 2-18 in page 98
+
+clear; clc; close;
+
+// Given data
+Vt=0.026; // Thermal voltage at room temperature in eV
+V=[0.1 0.2 0.3]; // Given voltages in V
+
+// Calculation
+V1=0.026*-2.3;
+printf("(a)V=%0.2f V\n",V1);
+R=(exp(1.92)-1)/(exp(-1.92)-1);
+printf("(b)Ration of forward bias current to reverse bias current=%0.2f\n",R);
+printf("(c):\n")
+for i=1:3
+    I=15*(exp(V(i)/0.026)-1);
+    printf("I = %0.3e A\n",I);
+end
+
+// Result
+// (a) V = -0.060 V
+// (b) Ratio = -6.83
+// (c) Forward currents = 0.687 mA, 32.86 mA and 1.539 A respectively
+\ No newline at end of file
diff --git a/181/CH2/EX2.18/example2_18.txt b/181/CH2/EX2.18/example2_18.txt
new file mode 100755
index 000000000..2837707f3
--- /dev/null
+++ b/181/CH2/EX2.18/example2_18.txt
@@ -0,0 +1,7 @@
+(a)V=-0.06 V
+(b)Ration of forward bias current to reverse bias current=-6.82
+(c):
+I = 6.872e+002 A
+I = 3.286e+004 A
+I = 1.539e+006 A
+ 
+\ No newline at end of file