simulink problem

ek1367 — Sun, 29 Apr 2012 09:05:07 +0000

I have a problem with simulink
I want to use fourier block and using fft of a signal, I want to build the input of the circuit from the fft result. but it has the singularity problem. is it even possible to do such thing? my circuit consists of a controlled current source which its currnt comes from result of the fourier transform of its voltage,its something like a voltage controlled current source. I would be happy to have your comments about my problem,

Thank you so much

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simulink problem