blob: 6529af7b8396e229d6fce92d1d7c0fb6d8c2e294 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
|
//CHAPTER 1- D.C. CIRCUIT ANALYSIS AND NETWORK THEOREMS
//Example 21
disp("CHAPTER 1");
disp("EXAMPLE 21");
//VARIABLE INITIALIZATION
I=20; //current source in Amperes
v1=10; //voltage source in Volts
v2=40; //voltage source in Volts
r1=8; //in Ohms
r2=5; //in Ohms
r3=4; //in Ohms
r4=12; //in Ohms
//SOLUTION
req=r1+r2; //series combination of resistors
rth=(req*r3)/(req+r3); //parallel connection of resistors (Thevenin resistance)
//by using nodal analysis, the following equations are obtained
//(13)v1+(-8)v2=750.......eq (1)
//(-4)v1+(9)v2=200........eq (2)
//solving the equations by matrix mehod
A=[13 -8;-4 9];
b=[750;200];
x=inv(A)*b;
v1=x(1,:); //to access the 1st element of 2X1 matrix
v2=x(2,:); //to access the 2nd element of 2X1 matrix
vth=v2; //Thevenin voltage
I=vth/(rth+r4); //Thevenin current
disp(sprintf("By Thevenin Theorem, the value of I is %.3f A",I));
//END
|
