another LT Spice question

integrate. d(var) to differentiate. I suggest you read the manual from start to end, that will save you a lot of time in the future.

YatlastX(s(w(var)))/Max(Time)

But it doesn't have the crashes ...

You're doing work for the mob ?>:-} ...Jim Thompson

No, but I live 10 miles west from here:

integrate. d(var) to differentiate. I suggest you read the manual from start to end, that will save you a lot of time in the future.

YatlastX(s(w(var)))/Max(Time)

PSpice, and other excellent softwares, only crash for you >:-}

The ONLY thing I ever have problems with is Firefox and its plug-in container, though the latest release seems to have fixed that. ...Jim Thompson

integrate. d(var) to differentiate. I suggest you read the manual from start to end, that will save you a lot of time in the future.

YatlastX(s(w(var)))/Max(Time)

Oh no. I remember lots of others, including some here in the NG. At one point when it got really bad I had the support guys on the phone and allowed them desktop access via web. Showed them the crashes, more and more folks came in on their side. They checked lots of settings, all ok, then commended me on how clean my PC was. I guess they must see a lot of messy ones. Then someone in the background exclaimed "I can't believe this is happening!".

To avoid any misunderstandings, the support was excellent. The quality of the software was IMHO not.

You probably have an older version with less problems. With software it's usually like with red wine, older = better.

Yep, that plug-in container is a really buggy piece of software. Yet still, for me it crashes with a runtime error maybe 4-5 times a year. That is absolutely nothing compared to Orcad/PSpice and Acrobat Reader. Both of which I ditched -> problem solved.

Skype must have been fixed, that no longer crashes since the last update. It leaves the occasional turd on the bottom task bar but one can live with that. It's IMHO not nearly as good as GoToMeeting though, so that's what gets used mostly here.

integrate. d(var) to differentiate. I suggest you read the manual from start to end, that will save you a lot of time in the future.

YatlastX(s(w(var)))/Max(Time)

I have v15.7, which is just a few versions back. The crash difference is that you, and other crashees, are using OrCAD Crapture, but I am still using original crispy flavor PSpice Schematics, which is rock solid. ...Jim Thompson

^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

That is what I meant with older. Nowadays a network simulator requires a schematic capture front-end. I determine my impression from the quality of the _available_ product in its entirety. To me there is no excuse such as "Oh, but ... but ... it's just the engine controller that always has issues".

"Older" has nothing to do with it, except for the very latest version where they scuttled any use of PSpice Schematics. At every "update" I insisted on PSpice Schematics as the GUI. So did many others. When they finally refused, we all refused to update and pay the fees. You're probably working with wusses where the management ordered the use of Crapture >:-} ...Jim Thompson

What gave you that idea?

Try this. A 1 farad capacitor, in series with 1 ohm (external, not LT's parasitic, turn all those off, charged by a one second 1 volt pulse, and allowed to discharge when the voltage source goes to zero. Give it enough time to fully discharge, 20 seconds is about right.

Integrate the current in the capacitor, you'll find it integrates to zero.

That's conservation of charge.

I just did it, with LTspice. With a 10 microsecond max timestep, the discrepancy is a few femtocoulombs.

Spice wouldn't be much use if it didn't conserve both charge and energy.

What might make people think otherwise is LTspice's annoying habit of supplying parasitic properties by default. Berkeley doesn't do that.

What would miso know ?>:-} ...Jim Thompson

integrate. d(var) to differentiate. I suggest you read the manual from start to end, that will save you a lot of time in the future.

YatlastX(s(w(var)))/Max(Time)

I haven't had a crash in Spice for at least a year now. In the new version they even have undo eventhough a simulation was run

The sky is the limit ;-)

Cheers

Klaus

integrate. d(var) to differentiate. I suggest you read the manual from start to end, that will save you a lot of time in the future.

YatlastX(s(w(var)))/Max(Time)

I have 16.6. Runs solid

Cheers

Klaus

Sure it does.

^^^^^^^^^^^^^^^^^^^^^^^^

-> No more updating -> older. See?

I do the same with my web hosting service. They constantly keep pitching "new and improved this, that and the other thing". Recently they pulled a real sneaky one. "Your account will be updated with gizmo control, widget automation and system wombombolation". Then, at the very end, "All this will be provided at the low cost of ". So I wrote them to shove it.

integrate. d(var) to differentiate. I suggest you read the manual from start to end, that will save you a lot of time in the future.

YatlastX(s(w(var)))/Max(Time)

they even have undo eventhough a simulation was run

Not even the COM wrapper error? Maybe they finally figured it out :-)

But I became so used to LTSpice that I think I'll stick with that.

integrate. d(var) to differentiate. I suggest you read the manual from sta rt to end, that will save you a lot of time in the future.

YatlastX(s(w(var)))/Max(Time)

ion they even have undo eventhough a simulation was run

Not even that.

I had it one time, but that was because the IT department moved the license to another server. They swore that the wrapper error had nothing to do wit h that. I lived with the error some weeks and suddenly it was gone. Talked to the IT department and it turned out they had booted the server during th e weekend, and now the server behaved nicely. And you've guessed it, the se rver was running windows ;-)

Cheers

Klaus