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Installing and using LTspice IV (now including LTXVII). From beginner to advanced.
Installing and using LTspice IV (now including LTXVII). From beginner to advanced.
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Old 10th April 2020, 08:26 AM   #1991
Zung is offline Zung  Switzerland
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Quote:
Originally Posted by edbarx View Post
How to improve simulation speed when it takes a long time to complete:


My own pedestrian recipe is to assign a weird value to a component I think is the culprit, like 1.01K instead of 1K, and that often helps LT to converge.
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Old 10th April 2020, 08:32 AM   #1992
kissabout2002 is offline kissabout2002  Italy
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Originally Posted by goddlediddles View Post
That is very useful, thanks. My tube sims can never complete using good old Sir Isaac Newton's method, but I notice that in every case with tubes it settles on one particular alternative, which I can't remember right now but I must check it.
...sorry out of topic I just saw you are in Co.Kerry, I have very nice memories of Dingle and Killarney, I lived in Cork 9 years, say hello to your beautiful country...
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Old 10th April 2020, 09:04 AM   #1993
goddlediddles is offline goddlediddles  Ireland
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Installing and using LTspice IV (now including LTXVII). From beginner to advanced.
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Originally Posted by kissabout2002 View Post
...sorry out of topic I just saw you are in Co.Kerry, I have very nice memories of Dingle and Killarney, I lived in Cork 9 years, say hello to your beautiful country...
Sure, I will. I look out my window here every morning to see if the mountains on the Dingle Peninsula are clearly visible. If they are not, it means it is raining, and if they are, it means it is about to rain - no, only kidding. I hope the great, wonderful and hospitable people of Italy can emerge soon from this terrible pandemic situation - I hope we all can.
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Old 10th April 2020, 10:05 AM   #1994
kissabout2002 is offline kissabout2002  Italy
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Originally Posted by goddlediddles View Post
Sure, I will. I look out my window here every morning to see if the mountains on the Dingle Peninsula are clearly visible. If they are not, it means it is raining, and if they are, it means it is about to rain - no, only kidding. I hope the great, wonderful and hospitable people of Italy can emerge soon from this terrible pandemic situation - I hope we all can.
lol...I know you are not kidding about raining....me too hope soon Italy will be clear with this situation,....you too and all member here take care and be safe.....all the best
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Old 10th April 2020, 10:20 AM   #1995
Mooly is offline Mooly  United Kingdom
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Installing and using LTspice IV (now including LTXVII). From beginner to advanced.
Quote:
Originally Posted by goddlediddles View Post
That worked perfectly, thanks. I edited the valve name part of the character string immediately following ".subckt" in the "tube.lib" file to read "Ayumi6SN7". I then copied out the existing 6SN7 ".asy" symbol file onto the desktop and renamed it "Ayumi6SN7", and plonked it into the same folder. So the Ayumi version of the 6SN7 is unambiguously invoked when I need it.

And - I went one further. To my surprise, .asy files open in LTSpice's symbol editor, and with that, I was able to change the name string to AY6SN7 for further affirmation of the correct choice of valve. And - and I even increased the text size as it would appear on the simulation, because the original was far too small. Looks like you can do quite a lot in that symbol editor, including making your own symbols. I hope I got everything right in this long-winded explanation.
That's great

Yes, there is a lot of twists and turns to getting used to LT and a lot of it is practice and trying stuff out. The more you learn and the more you can start to think how to do things... and often there are several ways of achieving that.
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Old 12th April 2020, 05:30 PM   #1996
Ylli is offline Ylli  United States
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It's probably in here somewhere, but I don't really want to go through 200 pages.....
After running a sim, you can left click on a schematic node and the voltage at that node will be tagged to the schematic. Is there any way to do the same with current through a component?
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Old 12th April 2020, 05:34 PM   #1997
keantoken is offline keantoken  United States
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Right click on the voltage text and write the current you wish to display after the dollar sign.

Oops, that doesn't work. Hmm...

Oh, you have to delete the dollar sign.
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Old 12th April 2020, 06:10 PM   #1998
Ylli is offline Ylli  United States
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Originally Posted by keantoken View Post
Right click on the voltage text and write the current you wish to display
Thank you. Now if I can only remember that the next time I need to use it
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Old 12th April 2020, 06:42 PM   #1999
keantoken is offline keantoken  United States
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Well I didn't, so you're in good company.
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Old 12th April 2020, 08:34 PM   #2000
tommost is offline tommost
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Just put the cursor over the body of the component and the cursor image will turn from a scope probe to a clamp on current meter.

tommost

Quote:
Originally Posted by Ylli View Post
It's probably in here somewhere, but I don't really want to go through 200 pages.....
After running a sim, you can left click on a schematic node and the voltage at that node will be tagged to the schematic. Is there any way to do the same with current through a component?
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