diff options
Diffstat (limited to '3754/CH26/EX26.3/26_3.sce')
| -rw-r--r-- | 3754/CH26/EX26.3/26_3.sce | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/3754/CH26/EX26.3/26_3.sce b/3754/CH26/EX26.3/26_3.sce new file mode 100644 index 000000000..62ed5e77e --- /dev/null +++ b/3754/CH26/EX26.3/26_3.sce @@ -0,0 +1,27 @@ +clear//
+
+//Variables
+
+VCC = 10.0 //Source voltage (in volts)
+RC = 5.0 * 10**3 //Collector resistance (in ohm)
+RB = 1.0 * 10**6 //Base resistance (in ohm)
+RE = 1.0 * 10**3 //Emitter resistance (in ohm)
+RL = 10.0 * 10**3 //Load resistance (in ohm)
+beta1=100.0;beta2=100.0;
+
+//Calculation
+
+IE = VCC /(RE + RB/beta1) //Emitter current (in Ampere)
+r1e = 25.0/IE * 10**-3 //a.c. emitter diode resistance (in ohm)
+Ri1 = beta1 * r1e //Input resistance of first stage (in ohm)
+Ri2 = beta2 * r1e //Input resistance of second stage (in ohm)
+Ro1 = RC * Ri2 / (RC + Ri2) //Output resistance of first stage (in ohm)
+Ro2 = RC * RL / (RC + RL) //Output resitance of second stage (in ohm)
+Av1 = Ro1 / r1e //Voltage gain of first stage
+Av2 = Ro2 / r1e //Voltage gain of second stage
+Av = Av1 * Av2 //Overall voltage gain
+Gv = 20 * log10(Av) //Overall dB voltage gain
+
+//Result
+
+printf("\n Input resistance of first and scond stage is %0.0f ohm and %0.0f ohm.\nOutput resistance of first and second stage is %0.1f ohm and %0.1f ohm.\nVoltage gain of first and second stage is %0.0f and %0.1f .\nOverall voltage gain and dB voltage gain is %0.0f and %0.1f dB.",Ri1,Ri2,Ro1,Ro2,Av1,Av2,Av,Gv)
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