diff options
Diffstat (limited to '3754/CH29/EX29.11/29_11.sce')
| -rw-r--r-- | 3754/CH29/EX29.11/29_11.sce | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/3754/CH29/EX29.11/29_11.sce b/3754/CH29/EX29.11/29_11.sce new file mode 100644 index 000000000..cda25545b --- /dev/null +++ b/3754/CH29/EX29.11/29_11.sce @@ -0,0 +1,19 @@ +clear//
+
+//Variables
+
+Rin = 4.2 * 10**3 //Input resistance (in ohm)
+Av = 220.0 //Voltage gain without feedback
+beta = 0.01 //Feedback ratio
+f1 = 1.5 * 10**3 //Cut off frequency without feedback (in Hertz)
+f2 = 501.5 * 10**3 //Cut off frequency with feedback (in Hertz)
+
+//Calculation
+
+R1i = (1 + beta * Av) * Rin //Input resistance of feedback amplifier (in ohm)
+f11 = f1 / (1 + beta * Av) //New cut off frequency without feedback (in Hertz)
+f21 = (1 + beta * Av) * f2 //New cut off frequency with feedback (in Hertz)
+
+//Result
+
+printf("\n The value of input resistance with feedback is %0.3f kilo-ohm.\nNew cut off frequency without feedback is %0.0f Hz.\nNew cut off frequency with feedback is %0.3f kHz.",R1i*10**-3,f11,f21*10**-3)
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