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

---
 2882/CH4/EX4.4/Ex4_4.sce | 30 ++++++++++++++++++++++++++++++
 1 file changed, 30 insertions(+)
 create mode 100755 2882/CH4/EX4.4/Ex4_4.sce

(limited to '2882/CH4/EX4.4')

diff --git a/2882/CH4/EX4.4/Ex4_4.sce b/2882/CH4/EX4.4/Ex4_4.sce
new file mode 100755
index 000000000..51f1dd4ee
--- /dev/null
+++ b/2882/CH4/EX4.4/Ex4_4.sce
@@ -0,0 +1,30 @@
+//Tested on Windows 7 Ultimate 32-bit
+//Chapter 4 Bipolar Junction transistors Pg no. 133
+clear;
+clc;
+
+//Given Data
+
+VCEsat=0.25;//VCEsat in volts
+VBB=4.5;//base driving source in volts
+RB=20;//base resistance in kilo-ohms
+RC=680;//collector resistance in ohms
+VCC=9;//collector driving source in volts
+VBE=0.7;//forward drop of emitter diode
+Bdc=100;//dc current gain for CE configuration
+
+//Solution
+//Figure 4.12
+
+ICsat=(VCC-VCEsat)/RC*1000;//value of collector saturation current in milli-amperes
+printf("IC(sat)=%.2f mA\n\n",ICsat);
+IB=(VBB-VBE)/RB;//value of base current in milli-amperes
+printf("IB=%.2f mA\n\n",IB);
+IC=Bdc*IB;//collector current for given IB in milli-amperes
+printf("IC=%d mA\n\n",IC);
+
+if IC>ICsat then
+    printf("Since IC(calculated) = %d mA is greater than IC(sat),\nthe transistor is in saturation.\nThe collector current of %d mA is never reached.\nIf you increase IB further,\nthe collector current is at the saturation value.",IC,IC);
+end
+
+//Error of 0.01 mA in textbook in the calculation of IC(sat)
-- 
cgit