diff options
Diffstat (limited to '3754/CH25/EX25.9/25_9.sce')
| -rw-r--r-- | 3754/CH25/EX25.9/25_9.sce | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/3754/CH25/EX25.9/25_9.sce b/3754/CH25/EX25.9/25_9.sce new file mode 100644 index 000000000..4f65ec2b2 --- /dev/null +++ b/3754/CH25/EX25.9/25_9.sce @@ -0,0 +1,27 @@ +clear//
+
+//Variables
+
+RC = 12.0 * 10**3 //Collector resistance (in ohm)
+RL = 4.7 * 10**3 //Load resistance (in ohm)
+R1 = 33.0 * 10**3 //Resistance (in ohm)
+R2 = 4.7 * 10**3 //Resistance (in ohm)
+IC = 1.0 * 10**-3 //Collector current (in Ampere)
+hiemin = 1.0 * 10**3 //hie minimum (in ohm)
+hiemax = 5.0 * 10**3 //hie maximum (in ohm)
+hfemin = 70.0 //Current gain minimum
+hfemax = 350.0 //Current gain maximum
+
+//Calculation
+
+hie = (hiemin * hiemax)**0.5 //hie (in ohm)
+hfe = (hfemin * hfemax)**0.5 //current gain
+Ri = hie //input resistance (in ohm)
+Ris = (R1*R2*Ri)/(Ri*R1+Ri*R2+R1*R2) //Input resistance of the amplified stage (in ohm)
+Ai = hfe //Current gain of transistor
+rL = RC * RL / (RC + RL) //a.c. load resistance (in ohm)
+Avs=Ai*rL/Ri;Av=Ai*rL/Ri;
+
+//Result
+
+printf("\n Input impedance is %0.2f kilo-ohm.\nOverall voltage gain is %0.1f .",Ris*10**-3,Avs)
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