diff options
Diffstat (limited to '3754/CH24/EX24.7/24_7.sce')
| -rw-r--r-- | 3754/CH24/EX24.7/24_7.sce | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/3754/CH24/EX24.7/24_7.sce b/3754/CH24/EX24.7/24_7.sce new file mode 100644 index 000000000..d9ff05811 --- /dev/null +++ b/3754/CH24/EX24.7/24_7.sce @@ -0,0 +1,24 @@ +clear//
+
+//Variables
+
+VCC = 12.0 //Source voltage (in volts)
+RC = 4.0 //Collector resistance (in kilo-ohm)
+RE = 3.3 //Emitter resistance (in kilo-ohm)
+beta = 120.0 //Common emitter current gain
+VBE = 0.7 //Emitter-to-Base Voltage (in volts)
+R1 = 60.0 //Resistance (in kilo-ohm)
+R2 = 30.0 //Resistance (in kilo-ohm)
+
+//Calculation
+
+Vth = VCC * R2 / (R1 + R2) //Thevenin's voltage (in volts)
+Rth = R1 * R2 / (R1 + R2) //Thevenin's equivalent voltage (in volts)
+IE = (Vth - VBE)/(RE + Rth/beta) //Emitter current (in milli-Ampere)
+r1e = 25.0 / IE * 10**-3 //a.c. resistance of emitter diode (in kilo-hm)
+rL = RC //Load resistance (in kilo-ohm)
+Av = RC / r1e //Voltage gain
+
+//Result
+
+printf("\n The voltage gain is %0.1f .",Av)
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