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calculating complex impedance in LTSpice

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student52

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Hi All,

I am working with LT Spice. I am stuck at a point where I should measure complex impedance. Can you please suggest ways to do this!!!!!!!!!

Thanks in advance,

Regards.
 

The most logical way is to inject a current into the device and to simulate the voltage across it (ac simulation).
If you choose 1 Ampere then the complex voltage is identical to the complex impedance (X=V/I).
Now you have the choice to display magnitude and/or phase as function of the frequency or the locus curve in the complex frequency plane (imaginary part vs. the Real part)
 

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