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
|
Re: MacOS directive .func does not work
Yes, it was a missing closing parenthesis. Puzzling that PC would not complain by Mac OS would.?
?
Thank you all for helping.?
Roman
|
Re: Ferromagnetic core modeling.
You would probably find the work by Alan Payne interesting.? Add "ferrite" and google
Please don't be discouraged by these repeated
appeals for help, Alexander. New members do not know where to
search for advice, and some members hope to avoid searching by
asking for advice here. That does not devalue your very helpful
contributions to our group.
On 2024-12-18 17:09, Александр
Бордодынов via 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.
--
OOO - Own Opinions Only
Best Wishes
John Woodgate
Keep trying
|
Re: Ferromagnetic core modeling.
Please don't be discouraged by these repeated
appeals for help, Alexander. New members do not know where to
search for advice, and some members hope to avoid searching by
asking for advice here. That does not devalue your very helpful
contributions to our group.
On 2024-12-18 17:09, 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.
--
OOO - Own Opinions Only
Best Wishes
John Woodgate
Keep trying
|
Re: Ferromagnetic core modeling.
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.
|
Re: LTSpice gm vs W/L Characterization
I understand that, but you must first convince yourself that you have a method which can gather the data you seek. THEN, it will be time to see if LTspice is up to the task. You're putting the cart befor the horse. That never works out very well.
?
|
Re: Ferromagnetic core modeling.
You might also be interested in a book on Inductors by Marcos Alonso. He uses a combination of Python and LTspice to do the modeling.
|
On 18/12/2024 10:04, Richard Andrews
via groups.io wrote:
I really should get
a printer and print this help file out along with a cheat sheet.?
Thank you Tony.
You could always read the Help PDF that you already uploaded to
Files. ?
--
Regards,
Tony
|
Re: Ferromagnetic core modeling.
Yes, I found the wiki Thanks to Jim.
|
I really should get a printer and print this help file out along with a cheat sheet.? Thank you Tony.
|
On 18/12/2024 09:26, Richard Andrews
via groups.io wrote:
Bah, I settled on a
.step function for the inductor. I am used to programming and it
would be nice to sweep component values with time. It would be a
cleaner screen to view.
You can't just sweep C or L values with time without considering the
rules of conservation of energy/charge.
There are ways of sweeping some component values with time, but they
general involve converting to a B-source. As a general rule,
component values cannot be changed during an analysis, because they
are parameters, which must be evaluated before the analysis starts.
Certain things can be changed during an analysis, along the lines of
your L(t) equation, but they would require using a .FUNCtion. You
can find more information:
Help > LTspice > LTspice? > Dot Commands > .FUNC -- User
Defined Functions
--
Regards,
Tony
|
John Woodgate
Bell, Dave
Tony Casey