diff options
Diffstat (limited to '3754/CH26/EX26.5/26_5.sce')
| -rw-r--r-- | 3754/CH26/EX26.5/26_5.sce | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/3754/CH26/EX26.5/26_5.sce b/3754/CH26/EX26.5/26_5.sce new file mode 100644 index 000000000..f08150d38 --- /dev/null +++ b/3754/CH26/EX26.5/26_5.sce @@ -0,0 +1,29 @@ +clear//
+
+//Variables
+
+VCC = 10.0 //Source voltage (in volts)
+RB = 470.0 * 10**3 //Base resistance (in ohm)
+RE = 1.0 * 10**3 //Emitter resistance (in ohm)
+RL = 1.0 * 10**3 //Load resistance (in ohm)
+a = 4.0 //Turn's ratio
+beta1=50.0;beta2=50.0;
+VBE = 0.7 //Emitter-to-base voltage (in volts)
+
+//Calculation
+
+IE = VCC/ (RE + RB/beta1) //Emitter current (in Ampere)
+r1e = 25.0 / IE * 10**-3 //a.c. emitter diode resistance (in ohm)
+Ri1 = RB*beta1*r1e/(RB+beta1*r1e) //Input resistance of first stage (in ohm)
+Ri2 = RB*beta2*r1e/(RB+beta2*r1e) //Input resistance of Second stage (in ohm)
+R1i2 = a**2 * Ri2 //Input resistance of the second stage transformed to primary side (in ohm)
+Ro1 = R1i2 //Output resistance of second stage (in ohm)
+R1o2 = a**2 * RL //Output resistance of the second stage transformed to the primary side (in ohm)
+Av1 = Ro1/r1e //Voltage gain of first stage
+Av2 = R1o2/r1e //Voltage gain of second stage
+Av = Av1 * Av2 //Overall voltage gain
+Gv = 20 * log10(Av) //Overall voltage gain (in decibels)
+
+//Result
+
+printf("\n Voltage gain of first stage is %0.1f .\nVoltage gain of second stage is %0.1f .\nOverall voltage gain is %0.0f .\nOverall voltage gain in decibels is %0.0f dB.",Av1,Av2,Av,Gv)
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