Hi @dcbingaman
Stop posting duplicate posts!

Moderation.

 

If you leave the part in, the simulation won't converge. That's why you started this thread -- the simulation wasn't working.

The first thing I did was download your .asc file and open it.

I saw the AD part there and figured that was the problem. But I tried to run it to see what actually happened. Guess what? It didn't converge.

I then simply deleted the AD part and tried to run it again. Guess what? It ran instantly.

I then explained the problem to you -- and you rejected it without trying the solution I offered, with statement that simply isn't true.

I then explained why that statement isn't true and told you to simply try it.

All you are doing is insisting that LTSpice requires something that it doesn't, when all you have to do to PROVE that it doesn't is just do what I suggested -- delete the AD part from your schematic and try to run the simulation.

Why is that so hard to even try?

It turns out WBhan is correct. I went back and removed the part and the simulation worked. I then started a new project without the part and the simulation still worked. I tried it on an older version of LTSpice and it did not
work. It appears the latest version of LTSpice does not need an LT part.

 

Bull!

Try it!

Delete the part and run the simulation!

I almost never have any LT parts in my simulations.

WBhan, sorry to upset you. After I ran more experiments it works, I stand corrected. What I did find was older versions of LTSpice did not work unless you had the LT part. Apparently the latest version of LT Spice corrected that.

 

Not only is this exceptionally rude, it is completely unreasonable. My life does not revolve around watching for your posts and immediately responding to them.

If this is what you expect and demand, then you can hope that someone else will cater to your whims. I am finished trying to help you.

You are correct. My apologies.

 

It has to be there! LT Spice (Is made by linear technologies) so it does not support any circuit that does not have it. In other words an LTSpice simulation must be using at least 1 part from LTSpice.

That is such absolute crap. Your credibility is exponentially approaching zero.

 

What I did find was older versions of LTSpice did not work unless you had the LT par

What?? Impossible. What version of a LTspice do you have in mind?

 

What?? Impossible. What version of a LTspice do you have in mind?

Well I don't remember exactly which version, that was some time ago.

 

Well I don't remember exactly which version, that was some time ago.

Are you sure that it was LTspice, not the TINA-TI?
Because I don’t recall such a "feature" in LTspice at all. I remember that there was something like this in TINA-TI.

 

Simulators are all limited as to the number of nodes that they can work with, and also by memory requirements.

 

Simulators are all limited as to the number of nodes that they can work with, and also by memory requirements.

That's true, but I doubt you can draw a circuit that big that LTspice can't count. You must have experience of using limited versions of Spice program.

 

Are you sure that it was LTspice, not the TINA-TI?
Because I don’t recall such a "feature" in LTspice at all. I remember that there was something like this in TINA-TI.

I never used TINA-TI only LTSpice, someone in a previous forum (I can't remember who) showed me how to fix it on LTSpice, but that was the older version and apparently the older versions required and LT part in order to simulate.

 

older versions required and LT part in order to simulate

I'm using LTspice IV, which is a pretty old version, and never had that problem.

 

I'm using LTspice IV, which is a pretty old version, and never had that problem.

ok, well for some reason my LTSpice was not working. But then again my version of LTSpice is about 5 years old possibly older. I just updated it, and it fixed the problem.