From b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b Mon Sep 17 00:00:00 2001 From: priyanka Date: Wed, 24 Jun 2015 15:03:17 +0530 Subject: initial commit / add all books --- 2498/CH5/EX5.17/ex5_17.sce | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) create mode 100755 2498/CH5/EX5.17/ex5_17.sce (limited to '2498/CH5/EX5.17') diff --git a/2498/CH5/EX5.17/ex5_17.sce b/2498/CH5/EX5.17/ex5_17.sce new file mode 100755 index 000000000..9dea95969 --- /dev/null +++ b/2498/CH5/EX5.17/ex5_17.sce @@ -0,0 +1,20 @@ +// Exa 5.17 +clc; +clear; +close; +format('v',7) +// Given data +Zo = 12.6;// in k ohm +Zo = Zo * 10^3;// in ohm +A = 60;// in dB +A = 10^(A/20) +Zof = 500;// in ohm +// Zof = Zo/(1+(A*Beta)); +Beta = ((Zo/Zof)-1)/A; +disp(Beta,"The value of feed back factor is"); +// Part (ii) +dAbyA= 20/100;// change in gain of basic amplifier +dAf_byAf =dAbyA*1/(1+A*Beta)*100;//change in overall gain in % +disp(dAf_byAf,"The change in overall gain for 20 % change in gain of the basic amplifier in % is"); + +// Note: In the book, there is calculation error to find the value of dAf/Af -- cgit