But RON is defined for linear region right??
|
Re: Separate from .CKT for .lib file
On Thu, Dec 19, 2024 at 09:00 PM, Mirza wrote:
I got a .CKT file and .lib file of photodiode and transimpedance amplifier.
I know how to make spice model from these files.
However, I want to separate transimpedance amplifier part from the .CKT file or .lib file.
Is it possible to separate?
It's impossible to say anything about your files or models, without seeing them.
?
But I will say that you probably can separate the photodiode part of the model from the amplifier part of the model.? Usually they can easily be separated.
?
By the way, filename extensions do not make any difference.? Maybe they mattered if they were made for a different simulator, but LTspice doesn't care whether it is .CKT or .LIB or .MOD or .Nonsense.
?
The lib file has many raw data which are unknown to me.
That is puzzling and I don't know what you mean.? Is the model encrypted?? If it is, then much of it would look like confusing data.? It is usually easy to tell when a model is encrypted by looking for the telltale identifiers.? Let's assume that it is not.
?
Perhaps the model uses tables, which could be extensive.
?
I am confused that you say you know how to make a SPICE model from those files, yet some of their contents are unknown.? That doesn't make much sense.
?
Andy
?
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Re: Separate from .CKT for .lib file
Anything is possible if you know what you are doing. Why not post your files by uploading them to the \Temp folder. That way we are in a better position to help you. Best method is to combine the into a ".zip" file. DO NOT use any other form of compression. Thanks.
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Separate from .CKT for .lib file
Hi
I got a .CKT file and .lib file of photodiode and transimpedance amplifier.
I know how to make spice model from these files.
However, I want to separate transimpedance amplifier part from the .CKT file or .lib file.
Is it possible to separate?
The lib file has many raw data which are unknown to me.
?
|
Re: Placing a Symbol and its .cir "Manually" into a schematic
I finally saved a copy of the symbol in the local (“.”) folder, one of the two I now have access to.
?
?
toggle quoted message
Show quoted text
From: [email protected] < [email protected]> On Behalf Of
Tony Casey
Sent: Thursday, December 19, 2024 2:29 PM
To: [email protected]
Subject: EXTERNAL: Re: [LTspice] Placing a Symbol and its .cir "Manually" into a schematic
?
On 19/12/2024 22:29, Bell, Dave via groups.io wrote:
You should be able to bring up the current folder from F2 by selecting it from the "Top Directory" drop-down selector at the top of the dialogue.
--
Regards,
Tony
|
Re: LTspice 24.1 Beta Available Now
On 19/11/2024 03:32, j.a.morgan.gm via
groups.io wrote:
Hi.? Just downloaded, looking forward to trying it out
tomorrow.
Writing here as I noticed this beta includes better path support
for libraries, right after writing about the use of environment
variables (as suggested a couple years ago by somebody) in
another post.? It's probably too late for this release but maybe
there is a better or at least parallel way that allows better
portability.? See my post, here.
So glad to see that AD/LT are still giving LTspice some love
with new releases. I'd be so dissapointed if it were canned in
favor of the AD/SIMPLIS EE Oasis. As much as I do like SIMPLIS's
speed (used it with TI and standalone) I always choose LTspice
over it, the propretary models are so trustworthy.
LTspice already supports environmental variables though the
operating system calls it uses. Unfortunately, though, it doesn't
acknowledge this if you try to view a model file linked by:
.lib ModelFileName.sub
.. when used with, for example, an environmental variable called
%MyModelLibs% that is listed in Settings > Search Paths >
Library Search Paths. However, in practice, LTspice still finds
ModelFileName.sub, provided it really does exist in the folder
pointed to by %MyModelLibs%, when an analysis is run.
Rather unhelpfully, LTspice tells you that %MyModelLibs% doesn't
exist when you add it to Settings > Search Paths > Library
Search Paths, but you can override this and tick "Add it anyway".
--
Regards,
Tony
|
Re: LTspice 24.1 Beta Available Now
Beta, Betta, Bettastill.
On 2024-12-19 22:28, Andy I via
groups.io wrote:
On Thu, Dec 19, 2024 at 05:15 PM, BRUCE108 wrote:
The link to the beta release appers to be broken. Is this
intentional or just an accident?
It is not precisely a broken link.? I think the Beta
version was taken down a couple of weeks ago, probably while
Analog Devices works out the bugs.
?
I did not see any confirmation of that, but I think it is
the most likely reason why.
?
I have heard nothing about a newer Beta version yet, so I
guess it's just wait and see until ADI has one ready for the
masses.
?
Andy
?
?
--
OOO - Own Opinions Only
Best Wishes
John Woodgate
Keep trying
|
Re: Placing a Symbol and its .cir "Manually" into a schematic
On 19/12/2024 22:29, Bell, Dave via
groups.io wrote:
Long explanation below, but here’s what I am
trying to do:
In a local folder where all my personal
LTspice projects and libs reside, I have
Potmet.asy
Potmet.cir
As below, I cannot access those from within
LTspice where I’m editing a model.
I can add .include Potme.cir without errors,
but how can I insert Potmet.asy, since I can’t pull it up under
F2?
?
?
Within the last few days, I have “lost”
access to my local \Documents\LTspiceXVII subfolders.
This appears to be due to the Company
migrating users to OneDrive, with some possible (temporary?)
sync errors.
?
From windows explorer, I have
\Documents\LTspiceXVII\MySymbols, but that folder and apparently
none of the others appear in OneDrive.
?
In LTspice Tools > sym & lib search
paths, I only have “.” and
“C:\Users\dbell5\Documents\LTSpice\LTspiceXVII”
When I try to add
C:\Users\dbell5\Documents\LTSpice\LTspiceXVII\MySymbols it
throws an error, saying that path does not exist.
Adding it anyway, or NOT, when I go to F2 and
pull down the search paths, the added paths are missing.
You should be able to bring up the current folder from F2 by
selecting it from the "Top Directory" drop-down selector at the top
of the dialogue.
--
Regards,
Tony
|
Re: LTspice 24.1 Beta Available Now
On Thu, Dec 19, 2024 at 05:15 PM, BRUCE108 wrote:
The link to the beta release appers to be broken. Is this intentional or just an accident?
I think the Beta version was taken down a couple of weeks ago, probably while Analog Devices works out the bugs.
?
I did not see any confirmation of that, but I think it is the most likely reason.
?
I have heard nothing about a newer Beta version yet, so I guess it's just wait and see until ADI has one ready for the masses.
?
Andy
?
?
|
If I want to
plot RON vs Vds is nmos in ltspice... Should I do d(Vds)/d(Id) or
VDS/ID?... Please help as whether RON is a large signal parameter
or small signal??
You should use d(Vds)/d(Id) because it is a non-linear function.
--
Regards,
Tony
|
Re: Placing a Symbol and its .cir "Manually" into a schematic
Your IT people might be able to get them back.
They are probably not erased, just hidden. But you might have to
keep them on a USB stick or elsewhere that OneDrive doesn't get
its claws on.
On 2024-12-19 22:05, Bell, Dave via
groups.io wrote:
I fully
agree, but we are absolutely stuck with it.
Another case
in point, in Outlook, I had several Personal Folders, as
.pst files, under \Documents.
After
migration, all .psts f’ing vanished, as they “are not
permitted in OneDrive”!
YEARS worth
of email history that I considered important enough to keep,
gone.
?
?
My
recent experience with One Drive is that it is clunky, and
does all sorts of weird things to your file access for at
leat 10 days. At one point, it deleted about half my Desktop
short-cuts, of which I have many.? It put them back two days
later, scattered at random among those that were not
deleted. Welcome to the Microsoft Brave New World. You can
also see, maybe, that Microsoft keeps updating it, showing
that it's fragile.
On 2024-12-19 21:29, Bell, Dave via
groups.io wrote:
Long explanation below, but here’s what I
am trying to do:
In a local folder where all my personal
LTspice projects and libs reside, I have
Potmet.asy
Potmet.cir
As below, I cannot access those from
within LTspice where I’m editing a model.
I can add .include Potme.cir without
errors, but how can I insert Potmet.asy, since I can’t pull
it up under F2?
?
?
Within the last few days, I have “lost”
access to my local \Documents\LTspiceXVII subfolders.
This appears to be due to the Company
migrating users to OneDrive, with some possible (temporary?)
sync errors.
?
From windows explorer, I have
\Documents\LTspiceXVII\MySymbols, but that folder and
apparently none of the others appear in OneDrive.
?
In LTspice Tools > sym & lib
search paths, I only have “.” and
“C:\Users\dbell5\Documents\LTSpice\LTspiceXVII”
When I try to add
C:\Users\dbell5\Documents\LTSpice\LTspiceXVII\MySymbols it
throws an error, saying that path does not exist.
Adding it anyway, or NOT, when I go to F2
and pull down the search paths, the added paths are missing.
?
Dave
--
OOO - Own Opinions Only
Best Wishes
John Woodgate
Keep trying
--
OOO - Own Opinions Only
Best Wishes
John Woodgate
Keep trying
|
Re: LTspice 24.1 Beta Available Now
The link to the beta release appers to be broken. Is this intentional or just an accident?
?
|
Re: Placing a Symbol and its .cir "Manually" into a schematic
I fully agree, but we are absolutely stuck with it.
Another case in point, in Outlook, I had several Personal Folders, as .pst files, under \Documents.
After migration, all .psts f’ing vanished, as they “are not permitted in OneDrive”!
YEARS worth of email history that I considered important enough to keep, gone.
?
toggle quoted message
Show quoted text
From: [email protected] <[email protected]>
On Behalf Of John Woodgate
Sent: Thursday, December 19, 2024 1:57 PM
To: [email protected]
Subject: EXTERNAL: Re: [LTspice] Placing a Symbol and its .cir "Manually" into a schematic
?
My recent experience with One Drive is that it is clunky, and does all sorts of weird things to your file access for at leat 10 days. At one point, it deleted about half my Desktop short-cuts, of which I have
many.? It put them back two days later, scattered at random among those that were not deleted. Welcome to the Microsoft Brave New World. You can also see, maybe, that Microsoft keeps updating it, showing that it's fragile.
On 2024-12-19 21:29, Bell, Dave via groups.io wrote:
Long explanation below, but here’s what I am trying to do:
In a local folder where all my personal LTspice projects and libs reside, I have
Potmet.asy
Potmet.cir
As below, I cannot access those from within LTspice where I’m editing a model.
I can add .include Potme.cir without errors, but how can I insert Potmet.asy, since I can’t pull it up under F2?
?
?
Within the last few days, I have “lost” access to my local \Documents\LTspiceXVII subfolders.
This appears to be due to the Company migrating users to OneDrive, with some possible (temporary?) sync errors.
?
From windows explorer, I have \Documents\LTspiceXVII\MySymbols, but that folder and apparently none of the others appear in OneDrive.
?
In LTspice Tools > sym & lib search paths, I only have “.” and “C:\Users\dbell5\Documents\LTSpice\LTspiceXVII”
When I try to add C:\Users\dbell5\Documents\LTSpice\LTspiceXVII\MySymbols it throws an error, saying that path does not exist.
Adding it anyway, or NOT, when I go to F2 and pull down the search paths, the added paths are missing.
?
Dave
--
OOO - Own Opinions Only
Best Wishes
John Woodgate
Keep trying
|
Re: Placing a Symbol and its .cir "Manually" into a schematic
My recent experience with One Drive is that it
is clunky, and does all sorts of weird things to your file
access for at leat 10 days. At one point, it deleted about half
my Desktop short-cuts, of which I have many.? It put them back
two days later, scattered at random among those that were not
deleted. Welcome to the Microsoft Brave New World. You can also
see, maybe, that Microsoft keeps updating it, showing that it's
fragile.
On 2024-12-19 21:29, Bell, Dave via
groups.io wrote:
Long explanation below, but here’s what I
am trying to do:
In a local folder where all my personal
LTspice projects and libs reside, I have
Potmet.asy
Potmet.cir
As below, I cannot access those from within
LTspice where I’m editing a model.
I can add .include Potme.cir without
errors, but how can I insert Potmet.asy, since I can’t pull it
up under F2?
?
?
Within the last few days, I have “lost”
access to my local \Documents\LTspiceXVII subfolders.
This appears to be due to the Company
migrating users to OneDrive, with some possible (temporary?)
sync errors.
?
From windows explorer, I have
\Documents\LTspiceXVII\MySymbols, but that folder and
apparently none of the others appear in OneDrive.
?
In LTspice Tools > sym & lib search
paths, I only have “.” and
“C:\Users\dbell5\Documents\LTSpice\LTspiceXVII”
When I try to add
C:\Users\dbell5\Documents\LTSpice\LTspiceXVII\MySymbols it
throws an error, saying that path does not exist.
Adding it anyway, or NOT, when I go to F2
and pull down the search paths, the added paths are missing.
?
Dave
--
OOO - Own Opinions Only
Best Wishes
John Woodgate
Keep trying
|
Placing a Symbol and its .cir "Manually" into a schematic
Long explanation below, but here’s what I am trying to do:
In a local folder where all my personal LTspice projects and libs reside, I have
Potmet.asy
Potmet.cir
As below, I cannot access those from within LTspice where I’m editing a model.
I can add .include Potme.cir without errors, but how can I insert Potmet.asy, since I can’t pull it up under F2?
?
?
Within the last few days, I have “lost” access to my local \Documents\LTspiceXVII subfolders.
This appears to be due to the Company migrating users to OneDrive, with some possible (temporary?) sync errors.
?
From windows explorer, I have \Documents\LTspiceXVII\MySymbols, but that folder and apparently none of the others appear in OneDrive.
?
In LTspice Tools > sym & lib search paths, I only have “.” and “C:\Users\dbell5\Documents\LTSpice\LTspiceXVII”
When I try to add C:\Users\dbell5\Documents\LTSpice\LTspiceXVII\MySymbols it throws an error, saying that path does not exist.
Adding it anyway, or NOT, when I go to F2 and pull down the search paths, the added paths are missing.
?
Dave
|
The equations are opposite right??
|
See, for instance,?
------------------------
Dave (Nick) Daniel
KC0WJN
------------------------
On Thu, Dec 19, 2024 at 14:44 abanindra.kumarmandal.ece24 via <abanindra.kumarmandal.ece24= [email protected]> wrote:
If I want to plot RON vs Vds is nmos in ltspice... Should I do d(Vds)/d(Id) or VDS/ID?... Please help as whether RON is a large signal parameter or small signal??
|
If I want to plot RON vs Vds is nmos in ltspice... Should I do d(Vds)/d(Id) or VDS/ID?... Please help as whether RON is a large signal parameter or small signal??
|
Re: Ferromagnetic core modeling.
|
Re: Ferromagnetic core modeling.
On 18/12/2024 18:09, Александр
Бордодынов via groups.io wrote:
I have repeatedly shown how it is quite simple to model
transformers with cores with hysteresis loops. I posted the
models on LTwiki. ?I have many examples of circuit calculation.
It surprises me that my achievements are not noticed. I used
cores with Chan and Gilius-Atherton models. Also powder cores.
Type in Google: bordodynov LTspice and you
will immediately receive the desired link.
Please don't be discouraged, Alexander. A good number of us
recognise your expertise and willingness to help. Unfortunately,
many users often don't know where to look for help. (I'm being a
little generous here. I should stop.)
--
Regards,
Tony
|
Bell, Dave
Tony Casey
John Woodgate