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I'm coming into the middle of this, but your extended waveform from '3-cycle sine symmetry.asc', over 1.2s is quite different to Andy's. I think you have errors in your PWL that give rise to 3

Changed the value now everything's back to normal. Thanks Tony.

Thanks, Andy. I might need to explain them. What do you mean by 'push harder'?

Thanks, Andy. It's difficult to see he absence of a '.'! I will need to fix the transition at the end of the sequence. I looked only at 120 ms and 1,2 s, and with those times the problem is invisible.

There is no intrinsic SPICE IGBT device. This is why all IGBT models are .subckts. If you're still using LTspiceIV for some reason, the reason your schematic didn't work is because you misnamed the

Your schematic doesn't work because, presumably: .lib "c:/Program Files (x86)/LTC/LTspiceIV/lib/cmp/IKW25N120H3.lib" ..is an invalid location if you have LTspiceXVII... and you have given the IGBT a

I realise that the model and symbol files are currently being discussed, but as a general rule, please upload all files required to run a simulation that aren't supplied by LTspice. All the files in?

Aren't IGBT's supported on version 4.23I?

I have needs for these file too. I use them in the usual way, but I get an error. Please help. File in temp richies-test-file-IKW25N120H3.asc

OK ,? I have them Thanks !

Go to Files....> temp....> scroll down to the files you want, or search on the top right field. ----- Udo

Thanks, I am not familiar , where is this temp folder ?

Hi, I will upload IKW25120H3.asy and .lib files to the temp-folder. The files are for 1200V 25A IGBT's. Should be possible to get also the files fo the 30A type. ---- Udo

Hello, does any boby have an example of IGBT model ? No obvious to find ! I am looking for a fast 1200V 30A Igbt . I can find the WIKI link

Hello All Andy wrote: "The "good" Linear Systems JFET models are here: Go to Linear Integrated Systems's website https://www.linearsystems.com/" Don't bother, I tried. All of their "Spice Model"

Hi Andy, Thanks for pointing that out. YES, I missed the missing dot (.) in front of the "options plotwinsize=0" I will blame the oversight on the highly acute and superior vision, which seems to

John, Here is a follow-up to yesterday's mention of the spurious stuff at 3.33 Hz (and odd harmonics) that was about 80 dB below the fundamental. It's an artifact.? It's not in the signal. I am not

Mike, maybe you missed it, but I answered John already.? John wrote "options" instead of ".options".? That turned it from a dot-command to a lossy transmission line, and gave us the error. Andy

Hi John, I do not know why this works. I changed the commands on the schematic to include more precision. .options numdgt=10 .options measdgt=10 .options plotwinsize=0 is listed on it's own seperate

John, The command-line you tried to add was "options plotwinsize=0".? That.s OK, except that it is missing the leading period.? So, LTspice sees it as an attempt to add an O-device, which is a Lossy