Recent content by Antros48

Ok after a lot of simulations it is appropriate to write down my results just to clarify them. The real and imaginary part change indeed with frequency, and the feedback was confirmed in an excel sheet too. The reason is when there is parallel connection of elements, the result is mathematically...

To determine the impedance i run ac analysis with list option for specific frequency. Then i divide the source voltage with the source current (with a negative sign cause of LTSpice convention).

Making an assumption, even a wrong one, based on experiment results does not necessarily means constituting a theory. Besides i am a fan of the fact that nothing happens randomly and everything has an explanation, no matter that cannot be explained yet..

thanks for the advice. My answer from post 19 is still valid.

Yes that what i figured out after a lot of simulation. the equations on different circuit configurations simply don't match.. Maybe there is indeed a palindrome that i cannot figure out but for now i have to declare that it is not achievable to predict it! Thanks anw

Ok because maybe my question got a little complicated in the way. I know that impedance changes with frequency, i am also familiar with skin effect and especially i am not lazy enough to expect from couple simulations to extract a relationship between two variables. I have build at least 15...

Ok agree with that.

Thank you for the answer sophiecentaur. The fact is i understand that the combination of resistances and other elements in a circuit has different results. Let's say i have an RL circuit containing only a resistance and an inductor. When i simulate that with LTSpice the total impedance is...

Plinds you are correct but let me type my question differently. I know the formula for changing the imaginary part of the impedance and it comes from 2 x pi x f x L. But how does the real part change? Is there a formula for that? And let's say that the real part is the total resistance of the...

But i run the simulation on very low frequencies. Is it possible that skin effect takes place in such spectrum?

Hi everyone, I am trying to simulate a circuit containing resistors, inductors and capacitors. When i calculate the Impedance of the circuit i find it to be for example 150+100j for a frequency of 5Hz. When i run the same simulation for a frequency of 15 Hz i find it to be 162+134j. I understand...