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Well after a day of fiddling about with the values in my .OPTIONS and different integration methods (including the suggestions in the FAQ), I finally got my circuit modelling with just: .OPTIONS

5pF is not unreasonable for the circuit I'm modelling, but I've changed this value over a wide range trying to model my circuit and the OP might also want to try that; pick a value (eg 0.5pF) and take

On Wed, Feb 26, 2025 at 12:19 AM, Andy wrote: FYI, that is not what I suggested. Leave the Start and Stop (or Left and Right) values alone. Let LTspice figure them out on its own. Change the text in

As of 24.1.4, it is still broken. I tried the original method, which failed, before adding the modification suggested by Matthias. An equally serious issue, IMHO, is that the new method is not

Thank you all for your detail information. I will check later. BR,

One small FYI -- It is not the AKO: syntax that enables .STEP'ing through MOSFETs or any other devices. The one key thing to remember is that you can only .STEP numbers.? As long as your MOSFET

What did you try? And when did you get that error (what were you doing when it happened)? Andy

Did you try some or all of the options listed in the LTspice FAQ (Frequently Asked Questions) file?? Please see the message # 158795 ( /g/LTspice/message/158795 ) that I sent earlier

Or alternative to: .model 1 ako: BSP89 .model 2 ako: BSS145 .STEP param M list 0 1 .param Model Select(M,"1","2") is to use: .STEP param M list 0 1 .param Model Select(M,"BSP89","BSS145")

Did you change your schematic and model references to NOT use the absolute locations? e.g. use ".include bunchOfModels.mod" rather than ".include \Home\Users\MyName\MyLibs\bunchOfModels.mod" A web

I tried this but now I get this windows error 3221226505

Yes, it can easily be done with the simple use of the AKO: syntax. But it was temporarily broken when V24.1 was first introduced. A modification of this method is now required, example:

Is it possible to STEP 2 different MOSFETs in a simulation run.? I've read about stepping models, and about basic subcircuits, but can you call one MOSFET file for the first step run and another

It looks like a corrupt download to me: an error in the PDF code. Delete the .ZIP and try downloading again. -- This email has been checked for viruses by AVG antivirus software. www.avg.com

Yeah I normally don't have issues with .zip files, but for some reason I couldn't the files within that zip

5pF is very high capacitance to add to every node in your circuit. It could significantly change the behaviour of many circuits. Does the supplied LT1375HV example circuit simulate OK in your version

As it happens I'm struggling with this old SPICE chestnut right now, working on trying to model the effect of a PTC fuse. This post ( /g/LTspice/message/530 ) resulted in me adding

As far as I can see, there's nothing wrong with the uploaded zip, but I updated the upload with just the .lib file. Can you normally open zip files in Explorer? -- Regards, Tony

Thank you for uploading the file, but when I try to open the .zip file I get an message saying "Assert Error ( WZTStamp.c@556 )" The parameter is incorrect." . Would you be able to re upload the file

I downloaded it directly from ADI's Website because the version that I have for LTspice XVII doesn't include the MAX44241.? When I checked if the component was within my version of Ltspice it wasn't.