USING MATLAB TO SOLVE THE NODE EQUATIONS
» R1=1000;R2=2000;R3=2000;
R4=4000; %resistances in Ohm
» iA=0.002;iB=0.004; %sources in Amps
» alpha=2; %gain of dependent source
DEFINE THE COMPONENTS OF THE CIRCUIT
DEFINE THE MATRIX G
» G=[(1/R1+1/R2),
-1/R1,
0; %first row of the matrix
-1/R1,
(1/R1+alpha+1/R2),
-(alpha+1/R2);
%second row
0,
-1/R2,
(1/R2+1/R4)], %third row. End in comma to have the echo
G =
0.0015
-0.0010
0
-0.0010
2.0015
-2.0005
0
-0.0005
0.0008
Entries in a row are
separated by commas
(or plain spaces).
Rows are separated by
semi colon
DEFINE RIGHT HAND SIDE VECTOR
» I=[iA;-iA;iB]; %end in ";" to skip echo
SOLVE LINEAR EQUATION
» V=G\I
% end with carriage return and get the echo
V =
11.9940
15.9910
15.9940
