--- In LTspice@..., legg@... wrote:
Given a plot of a pink or white noise voltage, and a synchronized plot of the current induced in a partially reactive load -
Will the 'normalized' ratio of the FFT plots be an indication of Z?
I'm looking at the low frequency end of the FFT, to avoid sampling issues. By normalized, I mean that 1 volt would produce 1 amp with both plots resolving to 0dB at the minimum sampled frequency (the load being partially inductive in this example).
It seems much too simple......
RL
Hello RL,
It will only work when you filter the FFT-output, but the
the FFT-results can't be filtered in LTspice. Thus you have
to export the FFT-data and process them in an external program.
This method only work with a linear system and it's precision
may be somewhat limited due to group delay variation.
Best regards,
Helmut
