diff options
Diffstat (limited to '3754/CH29/EX29.15/29_15.sce')
| -rw-r--r-- | 3754/CH29/EX29.15/29_15.sce | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/3754/CH29/EX29.15/29_15.sce b/3754/CH29/EX29.15/29_15.sce new file mode 100644 index 000000000..614e87eac --- /dev/null +++ b/3754/CH29/EX29.15/29_15.sce @@ -0,0 +1,23 @@ +clear//
+
+//Variables
+
+hfe = 100.0 //hfe
+hie = 2.0 * 10**3 //hie (in ohm)
+Re1 = 100.0 //Emitter resistance (in ohm)
+R1 = 15.0 * 10**3 //Resistance (in ohm)
+R2 = 5.6 * 10**3 //Resistance (in ohm)
+Rc = 470.0 //Collector resistance (in ohm)
+
+//Calculation
+
+Ai = hfe //Current gain
+Av = Ai * Rc / hie //Voltage gain
+Ri = (R1*R2*hie)/(R1*R2+R2*hie+R1*hie) //Input resistance (in ohm)
+beta = Re1 / Rc //feedback ratio
+A1v = Av / (1 + beta * Av) //Voltage ratio with feedback
+R1i = Ri*(1 + beta * Av) //Input resistancewith feedback (in ohm)
+
+//Result
+
+printf("\n Voltage gain without feedback is %0.3f .\nInput resistance without feedback is %0.0f kilo-ohm.\nVoltage gain with feedback is %0.2f .\nInput resistance with feedback is %0.1f kilo-ohm.",Av,Ri,A1v,R1i)
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