On Tue, Mar 25, 2025 at 09:49 AM, John Woodgate wrote:
You didn't fix the path in RQ3E100AT_TH, but never mind. I can't see what is causing the singular matrix error.
Oh god ! Sorry again...
Ok, if you haven't noticed yet, I created a PTC symbol / model based upon John Popelish work. I just added a pin for the temperature.
Maybe you can look if there is something wrong at this stage ?
Thanks a lot,
Pascal
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On 25/03/2025 17:40, pilou via
groups.io wrote:
I'm very sorry. I forget to correct paths into symbol and
indeed I forget a lib too.
For R3, it wasn't connected to VCC: the wire was too long ;)
I just re-upload the whole schematic:
This circuit runs in 24.1.4, but fails in 24.0.12 with a singular
matrix error.
Note: there is a pin (A1) on the thermistor, U7, that is
disconnected - it's in the body of the symbol. Perhaps it needs
connecting to something.
--
Regards,
Tony
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You didn't fix the path in RQ3E100AT_TH, but
never mind. I can't see what is causing the singular matrix
error.
On 2025-03-25 16:40, pilou via
groups.io wrote:
John,
I'm very sorry. I forget to correct paths into symbol
and indeed I forget a lib too.
For R3, it wasn't connected to VCC: the wire was too
long ;)
I just re-upload the whole schematic:
Thanks a lot in advance.
--
OOO - Own Opinions only
If something is true:
* as far as we know - it's science
*for certain - it's mathematics
*unquestionably - it's religion
|
John,
I'm very sorry. I forget to correct paths into symbol and indeed I forget a lib too.
For R3, it wasn't connected to VCC: the wire was too long ;)
I just re-upload the whole schematic:
Thanks a lot in advance.
|
Re: .STEPping a .WAVE file output
D’oh!? Further breaking a broken interface…
?
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From: [email protected] <[email protected]>
On Behalf Of ericsson.sunshine via groups.io
Sent: Monday, March 24, 2025 6:48 PM
To: [email protected]
Subject: EXTERNAL: Re: [LTspice] .STEPping a .WAVE file output
?
I have tested the following methods, plus the *.bat running under Windows OS.
.step param stp 1 6 1
.param fs {stp*1k}
.wave {stp} 16 44.1k V(out)
" --> it generates the file 1, 2,...,6
Then run the batch file, as following: (save it to file & name it to ***.bat)
Oops, I found the ".step + ,wave" method only works in LTspice XVII, not supported in LTspice V24.1.5.
In V24.1.5 I , it only creates a file named "{stp}".
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Re: .STEPping a .WAVE file output
Very nice!
I used to have a good mass rename/redate tool for Windows, but it’s been a while.
?
Thak you!
Dave
?
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From: [email protected] <[email protected]>
On Behalf Of ericsson.sunshine via groups.io
Sent: Monday, March 24, 2025 6:27 PM
To: [email protected]
Subject: EXTERNAL: Re: [LTspice] .STEPping a .WAVE file output
?
I have tested the following methods, plus the *.bat running under Windows OS.
.step param stp 1 6 1
.param fs {stp*1k}
.wave {stp} 16 44.1k V(out)
" --> it generates the file 1, 2,...,6
Then run the batch file, as following: (save it to file & name it to ***.bat)
@echo off
for %%f in (1 2 3 4 5 6) do (
? ? if exist "%%f" ren "%%f" "%%f.wav"
)
echo Renaming complete!
pause
Not sure if that's my naive, I tried the website of Analog Device, it doesn't release
LTspice 24.1.6 yet.
|
We can't run it , because:
- RQ3E100AT_TH symbol has the full path on
your computer attached. OK, we can fix that.
- RQ3E100AT_TH_Thermal.lib is missing
- ?There is a connection between the body of
R3 and the wire labelled Vcc. I suspect that is not correct.
On 2025-03-25 13:18, pilou via
groups.io wrote:
Hello John and Andy,
thanks a lot for your replies.
Please, find my circuit here:
Best regards,
Pascal
--
OOO - Own Opinions only
If something is true:
* as far as we know - it's science
*for certain - it's mathematics
*unquestionably - it's religion
|
Re: .STEPping a .WAVE file output
On Tue, Mar 25, 2025 at 02:23 AM, <ericsson.sunshine@...> wrote:
It's surprising , will this feature '.wave {Stp+".wav"} 16 44.1k V(Out)' be added-on ?
Well, I recommend that you read this message:
?
Andy
?
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Hello John and Andy,
thanks a lot for your replies.
Please, find my circuit here:
Best regards,
Pascal
|
Re: .STEPping a .WAVE file output
On Tue, Mar 25, 2025 at 11:42 AM, Andy I wrote:
Version 24.1.6 is not out yet.? Promised for sometime soon, very soon.
?
It's surprising , will this feature ' .wave {Stp+".wav"} 16 44.1k V(Out)' be added-on ?
If 'Yes', it's really powerful new generation. Worth to boost high to 24.10.5, higher order in higher level.
?
Thank you very much.
Best regards.
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Re: .STEPping a .WAVE file output
Version 24.1.6 is not out yet.? Promised for sometime soon, very soon.
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Re: .STEPping a .WAVE file output
On Tue, Mar 25, 2025 at 09:27 AM, <ericsson.sunshine@...> wrote:
Hi, :
?
I have tested the following methods, plus the *.bat running under Windows OS.
?
"
.step param stp 1 6 1
.param fs {stp*1k}
.wave {stp} 16 44.1k V(out)
" --> it generates the file 1, 2,...,6
?
Then run the batch file, as following: (save it to file & name it to ***.bat)
"
?
?
Oops, I found the ".step + ,wave" method only works in LTspice XVII, not supported in LTspice V24.1.5.
?
In V24.1.5 I , it only creates a file named "{stp}".
?
Best reards.
|
Re: .STEPping a .WAVE file output
Hi, :
?
I have tested the following methods, plus the *.bat running under Windows OS.
?
"
.step param stp 1 6 1
.param fs {stp*1k}
.wave {stp} 16 44.1k V(out)
" --> it generates the file 1, 2,...,6
?
Then run the batch file, as following: (save it to file & name it to ***.bat)
"
@echo off
for %%f in (1 2 3 4 5 6) do (
? ? if exist "%%f" ren "%%f" "%%f.wav"
)
echo Renaming complete!
pause
"
?
Not sure if that's my naive, I tried the website of Analog Device, it doesn't release LTspice 24.1.6 yet.
?
Have a nice day.
Best regards.
|
Some of the things you can try (no guarantees!) include:
- Remove voltage sources and replace with "Nortonized" (current) sources.
- Add a small GSHUNT, perhaps 1e-12 to as much as 1e-10.
- Add a small CSHUNT, perhaps 1e-15.
- Use SPICE models for similar (IC or transistor) parts from other manufacturers.
?
Andy
?
?
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There are indeed infinitely many reasons for
that error. We can't help much unless you let us see more of
what you are doing. Upload your .ASC file AND all the other
files required to run the simulation, but not .RAW? and .LOG
files or pictures,? in a ZIP archive to Files => Temp.
Go to the web page: /g/LTspice/topics. Click on
Files in the list on the left. Then click on Temp. Then click on
New Upload in the blue box at top left. Click on Upload File in
the drop-down menu. Then send a message to tell us that you did
that.
On 2025-03-24 17:59, pilou via
groups.io wrote:
Hello everybody,
I'm working on a schematic and encounter a "singular matrix"
error.
I know there are as many cause than people in the mankind, but I
would like to have advices to avoid this sort of things.
I'm aware that there are a lot of maths in the background too
:'(
Thanks a lot in advance for your help.
--
OOO - Own Opinions only
If something is true:
* as far as we know - it's science
*for certain - it's mathematics
*unquestionably - it's religion
|
Hello everybody,
I'm working on a schematic and encounter a "singular matrix" error.
I know there are as many cause than people in the mankind, but I would like to have advices to avoid this sort of things.
I'm aware that there are a lot of maths in the background too :'(
Thanks a lot in advance for your help.
|
Re: .STEPping a .WAVE file output
Hi,
?
Since this seems like a nice feature, I extended the grammar. Starting with LTspice 24.1.6, you can just say:
?
.wave {Stp+".wav"} 16 44.1k V(Out)
?
Best Regards,
Mathias
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Re: .STEPping a .WAVE file output
T does work, as you suggested, with *just* the number as filenemae.
OK for a few files to rename, like this, but if I wanted to make a lot of runs, it would be a pain.
?
Thanks,
Dave
?
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From: [email protected] <[email protected]>
On Behalf Of Andy I via groups.io
Sent: Monday, March 24, 2025 9:36 AM
To: [email protected]
Subject: EXTERNAL: Re: [LTspice] .STEPping a .WAVE file output
?
Maybe it's the negative values??
(Clearly, guessing here.)
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View the extended netlist.? view the netlist and right click on the netlist and select "generate expanded listing".
On Mon, Mar 24, 2025 at 4:48 AM, Tony Casey <tony@...> wrote:
On 24/03/2025 00:18, eetech00 via
groups.io wrote:
The simulation runs
but I'm not confident its using the proper JFET parameters because
it doesn't show them when it produces the error. It may be using
JFET defaults.
It works in 24.1.4 and 24.0.12. In 24.1.4, you get an
error message in the logfile, but it still works. I don't have
24.1.5 installed yet. The NJF() is superfluous. You already have
defined NJ20 as an NFT.
Yes, I know. But I had to that for BJT AKO to work so I tried
useing it here.
Do you have braces in the instantiation? Try removing
them. There are plenty of nuances here.
Already did. Doesn't help.
I had already checked that it does work even when an error is
reported. 24.1.4 gave the same current as 24.0.12 in a .OP analysis,
even when it reported the error. I doubled-checked by changing one
of NJ20 model parameters (Beta) - the current changed accordingly.
The result was the same whether or not the actual original model was
used or the AKO name.
The error is being wrongly reported. Errors should be terminal,
preventing analysis. If that doesn't happen, it should be reported
as a warning, if "strict" syntax rules are not being followed. The
classic "questionable curly braces" warning doesn't (normally) seem
to affect the analysis.
I don't ever remember having to use the intrinsic model type (D, Q,
MN, NJF, etc) when using the AKO syntax. It shouldn't be necessary.
If you found that it was for BJT, it suggests that the base model
you used wasn't in standard.bjt, and LTspice then fell back to the
default BJT when the the AKO was used.
--
Regards,
Tony
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Tony Casey
John Woodgate
Bell, Dave