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Jon, Yes, this is something that's been needed for a long time. So I implemented it today. To use it make a symbol with prefix 'X'. Make ModelFile point to a library contianing subcircuits. Give the

<david.pariseau@s...> wrote: your errors Hello David, you can send me your circuit file(s) for testing. Please use the following e-mail address if you a

That's weird, the part is in an SOT-3 package w/ only 3 pins, but it seems that the 4th input is temperature??? I added this and commented out the Diode line and there are no errors now in simulation,

<david.pariseau@s...> wrote: Hello Dave, this model from Fairchild has 4 pins. Please add a 4th pin to your symbol. You can see that requirement in the model file. I tried this with success. *20=DRAIN

--- In LTspice@..., "Reinier Gerritsen" <r.gerritsen@c...> wrote: SNIP > - a way to store multiple analysis commands. If I use .tran and .ac > commands, only the parameters of the last one

I've read through past messages, the SwCAD help and such and attempted to add a 3rd party model for the FDN304P. It seems to find the model fine now, but I get the error "Too few parameters for

First let me congratulate the author(s) and those that support this software. It is really useful and easy to use. My daughter, who is an engineeing sophmore, has even started to use LTSpice for some

Thanks for the quick reply. I figured there had to be a way to do this. I will give it a whirl. --Brent

Okay, tried it and like it. Originally, when I started using LT Spice, I wanted to add a new symbol for the PUJT type of device. You gave me an example of this which went a very long way in teaching

There's an undocumented means to do this. You might have convergence trouble with it, especially if you put it inside a feedback loop. Here's a resistance that varies as the sine of time: * arbitrary

I just started using LTSPice a few weeks ago to model semi-insulating electro-optic devices as RC-mesh/networks. It works great... But I need to model the time dependence of theses devices as the

Yes! I'll be using it immediately. Thanks! Jon

I put up a version of LTspice today with a new feature. There's a new symbol attribute called ModelFile. This lets you specify a file to include as a library file whenever this symbol is included.

Hello John, you can use the program "ltsputil.exe" program to export selectively nodes of your circuit. The output is in a tabular form which can be used directly with hopefully all of the math and

Mike, Thanks for the quick response! I'll give that a try. - John

Use the .SAVE command option, also in the tools control panel the compression option can be set to ASCII data file which can parse by Mathcad with a lot of effort. a period,

Use the .save command to list those nodes and voltages that you wish. If there is no .save command, then it saves the defaults, which you can set in Tools=>Control Panel=>Save Defaults.(That's where

Is there any way to limit the number of voltages and currents that are saved during a transient analysis? Over the weekend I ran a simulation of a poly-phase voltage regulator. The resulting data file

Hello Mike, I have never said here that it is specific for LT models. My statement has been a general one for all vendor's models. If it is true that the Boyle model is so weak, why not starting with