for all signals we can have laplace transform but we can have fourier transform only for ceratin cases...Fourier transform needs certain conditions caled as Dirchlet conditions whereas laplace wont need anything like this....
for all signals we can have laplace transform but we can have fourier transform only for ceratin cases...Fourier transform needs certain conditions caled as Dirchlet conditions whereas laplace wont need anything like this....
for all signals we can have laplace transform but we can have fourier transform only for ceratin cases...Fourier transform needs certain conditions caled as Dirchlet conditions whereas laplace wont need anything like this....
theoretically..laplace represents σ + jw and is in all of the s-plane while in fourier its only in the jw axis of this s-plane..so basically we are setting the real part of the exponenntial to 0 and hence
it will give you the features for steady state for a sinusoidal input
and in the case of laplace it will tel u for rising or fallin sinusoidal.
i hope that shud answer ur question..
For a good explanation you can consult the book PLL, or Roland E. Best, that you can find in this forum.
As my colegees said Laplace transform translate f(t) to σ + ωi domain, while Fourier translate f(t) to w domain.
that means Laplace has information of time and frequency that's why we use to study transitory circuits. But Fourier dosn't have all the information i this case fase and wave forms only frecquency and amplitude.
theoretically..laplace represents σ + jw and is in all of the s-plane while in fourier its only in the jw axis of this s-plane..so basically we are setting the real part of the exponenntial to 0 and hence
it will give you the features for steady state for a sinusoidal input
and in the case of laplace it will tel u for rising or fallin sinusoidal.
i hope that shud answer ur question..