#### kudjung

##### Member level 4

Hi Folks,

I've been playing with LTspice simulation and done coorelation with basic lab equipment with some help form the expert on this forum. It been a while since I have a chance to review this basic stuff. This is very useful.

I'm stuck with one issues. I attached 2 file here. One result is from AC Analysis and another is from Transient Analysis. I did the transformer simulation using 2 method, one is using LTspice coupled transformer model and another is using a T model calculated from transformer datasheet.

On Ac analysis, the result are as I expect for both method and quite coorelate between the 2 models.

On Transient analysis, result from coupled inductor method seem to look ok but the one with T-Model are strange. Can anyone explain why I got this result when I use the T-model. I've a feeling that I probably missing something very easy.

BTW, I've another few questions with LTspice if someone happen to know the answer.

-How to attached the cursor to the phase plot in AC analysis?

-Is there a way to save plot and reload it later? I want to be able to see the result of transient analysis and AC analysis at the same time.

TIA,

I've been playing with LTspice simulation and done coorelation with basic lab equipment with some help form the expert on this forum. It been a while since I have a chance to review this basic stuff. This is very useful.

I'm stuck with one issues. I attached 2 file here. One result is from AC Analysis and another is from Transient Analysis. I did the transformer simulation using 2 method, one is using LTspice coupled transformer model and another is using a T model calculated from transformer datasheet.

On Ac analysis, the result are as I expect for both method and quite coorelate between the 2 models.

On Transient analysis, result from coupled inductor method seem to look ok but the one with T-Model are strange. Can anyone explain why I got this result when I use the T-model. I've a feeling that I probably missing something very easy.

BTW, I've another few questions with LTspice if someone happen to know the answer.

-How to attached the cursor to the phase plot in AC analysis?

-Is there a way to save plot and reload it later? I want to be able to see the result of transient analysis and AC analysis at the same time.

TIA,