Question

5. Find vi, V2, V3, and v4 using Matlab. Verify your results with LTSpice. i0 V lk 2 3 kn 2kn 1'2 幸5kD 2 mA

Answer 1

Matlab Code:

clc;
clear all;
R=[     1         0        0       -1 ;
    0.00125   -0.00025 -0.0015   0.0007;
   -0.00025 0.0010833 -0.0003333 0 ;
   -0.001    -0.0003333   0.0018333 -0.0005]
   
I=[ 10;0;0;0.002]
V=inv(R)*I

Matlab Output:

R =

    1.0000         0         0   -1.0000
    0.0013   -0.0003   -0.0015    0.0007
   -0.0003    0.0011   -0.0003         0
   -0.0010   -0.0003    0.0018   -0.0005

I =

   10.0000
         0
         0
    0.0020

V =

    9.3659
    4.2536
    6.8001
   -0.6341

>>

LTspice:

V1 R6 9.3658537V 4000 10 R1 1000 R7 R5 8000002V 4.2536588V 634.14633mV 3000 2000 I1 R3 R2 2000 5000 0.002 0V ov .op