how to overcome this error?

Question

0 个投票

Actually,i am supposed to Vary the capacitance value from 10 μF to 50 μF with an interval of 10 μF and Plot and clearly indicate each resultant voltage across the resistor on the same figure; but i got a error which i cannot solve it. here is my codes:

t = 0:0.0001:0.07;

C = 10e-6:10e-6:50e-6;

if true
  % code
end
v0 = input('please Enter the value for v0:');
R = input('please Enter the value for resistance:');
C = input('please Enter the value for capacitacne:');
f = input('please Enter the value for frequency:');
m = length(t);
state = 'on';
for A = 1:m
  for n = 1:5
   vs(A,n) = v0 * sin(2*pi*f*t(A));
  switch state 
      case 'on'
  vR(A,n) = vs(A,n);
  iR = vR(A,n)/R;
  iC = 2*pi*f*C(n)*v0*cos(2*pi*f*t(A));
  I = iC + iR;
  if I<=0
     state = 'off';
     tA = t(A);
  end
      case 'off'
  vR(A,n) = v0*sin(2*pi*f*tA)*exp(-(t(A)-tA)/(R * C(n)));
    if vs(A,n) >= vR(A,n)
        state = 'on';
    end
  end
  end
end