On Apr 3, 2024, at 5:03 AM, Andy I <AI.egrps+io@...> wrote:

Carlos asked for an example showing how to simulate and plot the Bode plot from a linear low-pass filter in LTspice.

I realize everyone needs to start from the beginning, but it is surprising if you could not find a thousand examples already.

But I uploaded an example simulation for you.? It is here:

? ? Files > Temp > Low-pass_example.asc
? ? /g/LTspice/files/Temp/Low-pass_example.asc

Click on the link above to download it.? Or, go to the group's webpage, click "Files" in the menu on the left, then click "Temp" to go to the "Temp" subdirectory or folder, and you will find the file in that folder.

To use it, open it in LTspice and click "Run".? When it is done (it should take less than a tenth of a second), click on the wire with the "Out" label, and you will see the Bode plot of the filter.

An ".AC" analysis is the simplest kind to see Bode plots of linear filters.

Read LTspice's Help, which comes with the program.

LTspice comes with several example schematics in the folder "examples\Educational".? Many are .TRAN analyses but several are .AC and make Bode plots, without using ".FRA".

Andy