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| author | priyanka | 2015-06-24 15:03:17 +0530 |
|---|---|---|
| committer | priyanka | 2015-06-24 15:03:17 +0530 |
| commit | b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b (patch) | |
| tree | ab291cffc65280e58ac82470ba63fbcca7805165 /2882/CH4/EX4.4 | |
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initial commit / add all books
Diffstat (limited to '2882/CH4/EX4.4')
| -rwxr-xr-x | 2882/CH4/EX4.4/Ex4_4.sce | 30 |
1 files changed, 30 insertions, 0 deletions
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)
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