diff options
Diffstat (limited to '3754/CH22/EX22.15/22_15.sce')
| -rw-r--r-- | 3754/CH22/EX22.15/22_15.sce | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/3754/CH22/EX22.15/22_15.sce b/3754/CH22/EX22.15/22_15.sce new file mode 100644 index 000000000..caf6f9fcb --- /dev/null +++ b/3754/CH22/EX22.15/22_15.sce @@ -0,0 +1,25 @@ +clear//
+
+//Variables
+
+VCC = 12.0 //Source voltage (in volts)
+RE = 100.0 //Emitter Resistance (in ohm)
+RC = 3.3 //Collector Resistance (in kilo-ohm)
+IE = 2.0 //Emitter current (in milli-Ampere)
+VBE = 0.7 //Emitter-to-Base Voltage (in volts)
+alpha = 0.98 //Common base current gain
+R2 = 20.0 //Resistance (in kilo-ohm)
+
+//Calculation
+
+IC = alpha * IE //Collector current (in milli-Ampere)
+VB = VBE + IE * RE * 10**-3 //Base voltage (in volts)
+VC = VCC - IC * RC //Collector voltage (in volts)
+IR2 = VC / (R2) //Current through resistance 2 (in milli-Ampere)
+IB = IE - IC //Base current (in milli-Ampere)
+IR1 = IR2 + IB //Current through resistance 1 (in milli-Ampere)
+R1 = (VC - VB) / IR1 //Value of the resistance (in kilo-ohm)
+
+//Result
+
+printf("\n The value of R1 is %0.1f kilo-ohm.",R1)
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