开云体育

--- In LTspice@..., Macy <macy@...> wrote:

2232 or 3323 ??

--- dfoulke_belcan@... wrote:

From: "dfoulke_belcan" <dfoulke_belcan@...>
To: LTspice@...
Subject: [LTspice] HPCL-2232 LIB or SUB file
Date: Wed, 24 Jul 2013 18:51:34 -0000

Does anyone know of the whereabouts of a .LIB or .SUB file for Avago's HCPL-3323 Optocoupler? There is nothing on their web sits.

Dennis

The part number is HCLP2232.

Dennis

Hello Frank,

Thank you for posting the link to the message Mike posted when the
alternate solver was first released. A couple of tidbits in the
message were especially interesting. One, "It is the hardest for other
programs to duplicate."
Two, "Basically two copies of the executable in LTspice"

You must have a super memory to be able to recall a message that old in
the LTspice message files.

Howard

--- In LTspice@..., Michael.Harris@... wrote:

Hi,

I am looking for a potentiometer component but can not see one within the
library symbols.

Does anyone know where I can find one?

Kind Regards,
Mike

Hello Mike,

When you search in the mentioned "all_files.htm" you will
find this place below.

Files > Lib > Potentiometer > potentiometer.zip



Just unzip it in a folder and run the example schematic(.asc).
The zip-file contains the symbol potentiometer.asy and a
subcircuit potentiometer.sub. Copy these two files into the
folders of your schematics if you need a potentiometer.

Best regards,
Helmut

I am looking for a potentiometer component but can not see one within the
library symbols.

Indeed, there is no potentiometer as a standard schematic symbol, built
into LTspice.

Does anyone know where I can find one?

Sure. You can find them in the [LTspice] YahooGroup. Oh wait, that's
where you are!

Many people have created them already. If you really need a pot. symbol on
your schematic, search this forum and you will find them.

You can search through the message archive, but that would be tedious. I
recommend downloading and opening this file:

Files > Tables of Contents > all_files.htm

and then search for "potentiometer.asy" or just "potentiometer".

If you don't actually need the symbol, remember that a pot. is just two
resistors in series. You can get by with just a pair of resistors and it
will simulate exactly the same.

Regards,
Andy

Hi,

I am looking for a potentiometer component but can not see one within the
library symbols.

Does anyone know where I can find one?

Kind Regards,
Mike

In message <ksr6oq+m6c0@...>, dated Thu, 25 Jul 2013, sct5033 <sct12@...> writes:

The MS web site today says that SP1 is current for Win 7. ; =win7 <
&#92;s=win7>

Sorry, confused. There was supposed to be an SP2 on the way, but when??? Win 8 seems to be taking all the resources at present.
--
OOO - Own Opinions Only. With best wishes. See www.jmwa.demon.co.uk
Why is the stapler always empty just when you want it?

John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK

The MS web site today says that SP1 is current for Win 7.
;
=win7
<;
s=win7>

--- In LTspice@..., Howard Hansen <hrhan@...> wrote:

I don't remember seeing the following difference between the regular
solver and the alternate solver being mentioned before.

"In fact, the Alternate Solver of LTspice has been doing
extended-precision circuit simulation for a long time."

This difference was extracted from one of the comments to the article.

Howard

According to Mike Engelhardt, "it runs at about half the simulation speed but 1000x more accurately as far as the matrix solution goes", see (that message is from June 16, 2003, more than 10 years ago!).

Best regards,

Frank

This problem is solved now. Thanks for your input. The problem is I was using the old Fairchild KSA and KSC models for the 3503 and the 1381. I replaced these with a different transistor and the sim ran ok. Then I replaced just the one back to the original device, it ran, but it was wrong.

I found some updated models on the web that have solved it.

I also understand that Fairchild have updated these models now, so they should converge.

--- In LTspice@..., "jason.vanryan" <andrewc.russell@...> wrote:

--- In LTspice@..., "Helmut" <helmutsennewald@> wrote:

--- In LTspice@..., "jason.vanryan" <andrewc.russell@> wrote:

--- In LTspice@..., "Helmut" <helmutsennewald@> wrote:

--- In LTspice@..., "jason.vanryan" <andrewc.russell@> wrote:

--- In LTspice@..., "jason.vanryan" <andrewc.russell@> wrote:

--- In LTspice@..., "analogspiceman" <analogspiceman@> wrote:

--- In LTspice@..., "jason.vanryan" <andrewc.russell@> wrote:

Thanks for the feedback. This is happening on the latest version
I downloaded and after I have set all sim variables to default in
the tool tab.

I will try the cap idea and see how it works out.

Be sure to try using the Alternate Solver as Andy suggested.
This option must be set manually (cannot be set in the simulation
commands on the schematic) and it is easy to overlook it having
been set on a prior, unrelated simulation. If it gets inadvertently
reset, marginal simulations can "suddenly" cease to run.

Clear- thanks for pointing that out. I'll give it a try.

My problems are still with me.

I have tried the ideas above still no success. I took a circuit that is simulating well and appears to be stable ( ie no convergence problems) that uses the same models as the previous circuit. I modify this circuit so that it is a replica of the first circuit discussed above, and the problems return. I am getting pages of ''Heightened Def Con from xxx to yyy' messages in the error log file which I never had before.

Hello Jason,

Please try my suggestion with cshunt as I mentioned before.

Best regards,
Helmut

Hello Helmut,

I did try that - 1e-12 and 10e-12 still no success

Hello Jason,
I never use higher cshunt values than 1e-15.

You could send me one of your designs if you can't upload it
for some reason. I would then try on it.

Best regards,
Helmut

Sure, where can I send it (email address). I would appreciate your help on this.

Hello,

Haven't you see the email address on every of my messages?

helmutsennewald@...

Best regards,
Helmut

jason.vanryan <andrewc.russell@...> wrote:

< long unnecessary block of un-trimmed previous replies to replies to
replies >

Sure, where can I send it (email address). I would appreciate your help on

this.

I would first try uploading the schematic(s) to the group's website.
That's what we encourage people to do when they want help. See the
instructions on the group's website for what directory to upload them into.
(Group's website is: )

If you are unable to upload your files (I don't know why anyone would be
unable to), or if for security reasons you don't want them to be visible by
all members of this group, then use Helmut's offer to email them to him
directly. His email address is at the top of any message he sends to the
group. If for some reason you are unable to see that, it is: helmutsennewald
(at) yahoo.com .

Andy

--- In LTspice@..., "Helmut" <helmutsennewald@...> wrote:

--- In LTspice@..., "jason.vanryan" <andrewc.russell@> wrote:

--- In LTspice@..., "Helmut" <helmutsennewald@> wrote:

--- In LTspice@..., "jason.vanryan" <andrewc.russell@> wrote:

--- In LTspice@..., "jason.vanryan" <andrewc.russell@> wrote:

--- In LTspice@..., "analogspiceman" <analogspiceman@> wrote:

--- In LTspice@..., "jason.vanryan" <andrewc.russell@> wrote:

Thanks for the feedback. This is happening on the latest version
I downloaded and after I have set all sim variables to default in
the tool tab.

I will try the cap idea and see how it works out.

Be sure to try using the Alternate Solver as Andy suggested.
This option must be set manually (cannot be set in the simulation
commands on the schematic) and it is easy to overlook it having
been set on a prior, unrelated simulation. If it gets inadvertently
reset, marginal simulations can "suddenly" cease to run.

Clear- thanks for pointing that out. I'll give it a try.

My problems are still with me.

I have tried the ideas above still no success. I took a circuit that is simulating well and appears to be stable ( ie no convergence problems) that uses the same models as the previous circuit. I modify this circuit so that it is a replica of the first circuit discussed above, and the problems return. I am getting pages of ''Heightened Def Con from xxx to yyy' messages in the error log file which I never had before.

Hello Jason,

Please try my suggestion with cshunt as I mentioned before.

Best regards,
Helmut

Hello Helmut,

I did try that - 1e-12 and 10e-12 still no success

Hello Jason,
I never use higher cshunt values than 1e-15.

You could send me one of your designs if you can't upload it
for some reason. I would then try on it.

Best regards,
Helmut

Sure, where can I send it (email address). I would appreciate your help on this.

2232 or 3323 ??

--- dfoulke_belcan@... wrote:

From: "dfoulke_belcan" <dfoulke_belcan@...>
To: LTspice@...
Subject: [LTspice] HPCL-2232 LIB or SUB file
Date: Wed, 24 Jul 2013 18:51:34 -0000

Does anyone know of the whereabouts of a .LIB or .SUB file for Avago's HCPL-3323 Optocoupler? There is nothing on their web sits.

Dennis

--- In LTspice@..., "jtanalog" <ltlist@...> wrote:

--- In LTspice@..., Andy <Andrew.Ingraham@> wrote:

I think for the most part you answered your own questions.

Is there a secret .option for seting the solver?

Apparently not, as your next line stated:

Help says:
"There is no .option to specify which solver is used, the choice must be
made before the netlist is parsed because the two solvers use different
parsers."

Why not?

Because LTspice needs to parse (read and decode) the netlist in order to
find the .option. By then it is too late to change the parser.

Wouldn't it be better than puting a text on the shematic, saying
"attention: switch to alternate solver for this deck".

It might be nice, yes. But as the LTspice developer says, it can't be done.

I suppose you could suggest to Mike that he re-consider ... to make LTspice
start over from the beginning if it finds an .option to change the solver.

Regards,
Andy

PSpice has not one iota of a problem with that circuit.

Perhaps the problem is the 1N4148 model... was it a full diode model, or the idealism that LTspice uses to speed up switcher simulations?

-Jim Thompson

Hello Jim,

The simulation has been done with a full diode model.

Best regards,
Helmut

--- In LTspice@..., Andy <Andrew.Ingraham@...> wrote:

I think for the most part you answered your own questions.

Is there a secret .option for seting the solver?

Apparently not, as your next line stated:

Help says:
"There is no .option to specify which solver is used, the choice must be
made before the netlist is parsed because the two solvers use different
parsers."

Why not?

Because LTspice needs to parse (read and decode) the netlist in order to
find the .option. By then it is too late to change the parser.

Wouldn't it be better than puting a text on the shematic, saying
"attention: switch to alternate solver for this deck".

It might be nice, yes. But as the LTspice developer says, it can't be done.

I suppose you could suggest to Mike that he re-consider ... to make LTspice
start over from the beginning if it finds an .option to change the solver.

Regards,
Andy

PSpice has not one iota of a problem with that circuit.

Perhaps the problem is the 1N4148 model... was it a full diode model, or the idealism that LTspice uses to speed up switcher simulations?

-Jim Thompson

In message <kspcm6+eq68@...>, dated Wed, 24 Jul 2013, sct5033 <sct12@...> writes:

Win 7 Enterprise (managed by my University)
SP1

I don't suppose it's the cause of the problem, but SP1 does have many weaknesses. You should have SP3, I think.
--
OOO - Own Opinions Only. With best wishes. See www.jmwa.demon.co.uk
Why is the stapler always empty just when you want it?

John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK

PROBLEM SOLVED
Moving the schematic directory from the network to the C: drive was all it took. Now to get with the IT people and find out why...

Thank you very much John.

The program is in

c:&#92;Users&#92;<me>&#92;Documents&#92;LTC&#92;

The schematic files are on a network drive. Let me try moving that folder to C:&#92; ...

Win 7 Enterprise (managed by my University)
SP1

LTspice was installed as administrator, then run as user. However I have tried to Run as Administrator with no difference.

On 24/07/2013 21:16, sct5033 wrote:

Win 7 Enterprise (managed by my University)
SP1

LTspice was installed as administrator, then run as user. However I have tried to Run as Administrator with no difference.

I would install in something like "c:&#92;ltspice" rather than the default folder, if it will let you....

--- In LTspice@..., John Woodgate <jmw@...> wrote:

In message <kspabh+oak6@...>, dated Wed, 24 Jul 2013, sct5033
<sct12@...> writes:

I have a new installation of LTspice on a Windows 7 OS.

Which flavour of Win 7 and which SP level? Are you running as
Administrator?
--
OOO - Own Opinions Only. With best wishes. See www.jmwa.demon.co.uk
Why is the stapler always empty just when you want it?

John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK

--
Dave Wade G4UGM
Illegitimi Non Carborundum