diff options
Diffstat (limited to '3754/CH26/EX26.6')
| -rw-r--r-- | 3754/CH26/EX26.6/26_6.sce | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/3754/CH26/EX26.6/26_6.sce b/3754/CH26/EX26.6/26_6.sce new file mode 100644 index 000000000..9ccfdb7c4 --- /dev/null +++ b/3754/CH26/EX26.6/26_6.sce @@ -0,0 +1,31 @@ +clear//
+
+//Variables
+
+VCC = 12.0 //Source voltage (in volts)
+R1 = 100.0 * 10**3 //Resistance (in ohm)
+R2 = 20.0 * 10**3 //Resistance (in ohm)
+R3 = 10.0 * 10**3 //Resistance (in ohm)
+R4 = 2.0 * 10**3 //Resistance (in ohm)
+R5 = 10.0 * 10**3 //Resistance (in ohm)
+R6 = 2.0 * 10**3 //Resistance (in ohm)
+beta1=100.0;beta2=100.0;
+
+//Calculation
+
+Vth = VCC * R2 / (R1 + R2) //Thevenin's voltage (in volts)
+IE1 = Vth / R4 //Emitter curren1 (in Ampere)
+r1e = 25.0 / IE1 * 10**-3 //a.c. emitter diode resistance (in ohm)
+VR6 = VCC - IE1 * R3 //Voltage across resistance6 (in volts)
+IE2 = VR6 / R6 //Emitter current2 (in Ampere)
+r1e2 = 25.0 / IE2 * 10**-3 //a.c. emitter diode resistance2 (in ohm)
+Ri2 = beta2*(r1e2 + R6) //Input resistance of second stage (in ohm)
+Ro1 = R3 * Ri2 /(R3 + Ri2) //Output resistance of first stage (in ohm)
+Ro2 = R5 //Output resistance of second stage (in ohm)
+Av1 = Ro1/(r1e + R4) //Voltage gain of first stage
+Av2 = Ro2/(r1e2 + R6) //Voltage gain of second stage
+Av = Av1 * Av2 //Overall voltage gain
+
+//Result
+
+printf("\n Voltage gain of first stage is %0.1f .\nVoltage gain of second stage is %0.1f .\nOverall voltage gain is %0.2f .",Av1,Av2,Av)
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