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Date

Re: LTspiceXVII released

John Woodgate
 

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Analogspiceman says ?' I am running Windows 7 Home Premium 64 bit I-7.', so his .ini file is probably elsewhere.

?

With best wishes DESIGN IT IN! OOO ¨C Own Opinions Only

J M Woodgate and Associates Rayleigh England

?

Sylvae in aeternum manent.

?

From: LTspice@... [mailto:LTspice@...]
Sent: Friday, July 29, 2016 8:55 PM
To: [LTspice] group
Subject: Re: [LTspice] Re: LTspiceXVII released

?

?

? ?"What is interesting is that my selection of this option managed to persist through a complete reinstall of the software.? The Control Panel's persistent settings must be stored in the registry or in a configuration file that does not get erased or overwritten.? I will have to go looking for where such items are stored with the new LTspice."

?

All LTspice configuration settings are stored in the LTspice*.ini file where "*" = IV or XVII.? That file is in my user's AppData\Roaming directory. ?(There is a better pointer to that directory using environment variables, but I don't know it off-hand.) ?The file is NOT over-written by a re-install, so yes, it will retain your settings.

?

LTspiceIV *can* store its settings in the Windows Registry instead, if you tell it to.? But by default, it doesn't touch the Registry.

?

Regards,

Andy

?

?


Re: LTspiceXVII symbol import problem:

John Woodgate
 

¿ªÔÆÌåÓý

We VERY often tell people that this is usually due to Windows protection of files in the Program Files folder. Put your own stuff in the same folder as your schematic, or in a 'My Library' folder outside Program Files.

?

With best wishes DESIGN IT IN! OOO ¨C Own Opinions Only

J M Woodgate and Associates Rayleigh England

?

Sylvae in aeternum manent.

?

From: LTspice@... [mailto:LTspice@...]
Sent: Friday, July 29, 2016 9:10 PM
To: LTspice@...
Subject: [LTspice] LTspiceXVII symbol import problem:

?

?

Ive discovered some odd behavior -

I had created a bunch of my own symbols in IV.

Ive tried to copy my symbol directory to the sym dir.

as well as to the Misc dir, and

even copied just the files to the sym directory.

XVII refuses to see them.

Any of you experience this?

Ive already emailed to "help" about this.

Al D.


Re: Ferrite Beads

 

Hello Andy,

I just repeated this case with the Laird-symbol. It looks like added symbols to the installation folders will not be shown in the component-menu. I have sent a message to Mike asking whether this is intended behavior. Let's see what Mike will answer.

Alternatively one could copy the symbol and the model file to the schematic folder of course.

Best regards,
Helmut


LTspiceXVII symbol import problem:

 

Ive discovered some odd behavior -

I had created a bunch of my own symbols in IV.

Ive tried to copy my symbol directory to the sym dir.

as well as to the Misc dir, and

even copied just the files to the sym directory.

XVII refuses to see them.

Any of you experience this?

Ive already emailed to "help" about this.

Al D.


Re: LTspiceXVII released

 

? ?"What is interesting is that my selection of this option managed to persist through a complete reinstall of the software.? The Control Panel's persistent settings must be stored in the registry or in a configuration file that does not get erased or overwritten.? I will have to go looking for where such items are stored with the new LTspice."

All LTspice configuration settings are stored in the LTspice*.ini file where "*" = IV or XVII.? That file is in my user's AppData\Roaming directory. ?(There is a better pointer to that directory using environment variables, but I don't know it off-hand.) ?The file is NOT over-written by a re-install, so yes, it will retain your settings.

LTspiceIV *can* store its settings in the Windows Registry instead, if you tell it to.? But by default, it doesn't touch the Registry.

Regards,
Andy

?


Re: Ferrite Beads

 

bill.spence?wrote:

? ?"I have attempted to add the Laird Ferrite Bead Library to LTSpice without success."

The ZIP file from Laird includes an LTspice symbol (.asy file), which differs from the one that comes with LTspice.? Make sure to use Laird's symbol.

I think there are two things you need to do:

.lib LairdTech_v2_0.lib

(add that as a SPICE Directive to your schematic.)

Then, edit "ModelName" on the symbol to be the name of the subcircuit you want to use.? For example: change it to?HI0805Q310R-10 if that is the bead model you wish to use.

Also, make sure to have both the .asy file and the .lib file in the same directory with your schematic.

This might not answer your question -- and there is more than one way to accomplish it.? If this doesn't help, it would help me if you show the error message(s) you got from LTspice.? It might point to the exact problem.

? ?"Looks like the Wurth ferrites in my LTSpice are encrypted."

Are they encrypted for LTspice?

Regards,
Andy



Re: Google groups

 

Helmut,

As I remember the plans, it was to be held in reserve and inactive, until needed.
The date of Apr 16 at 11:01 AM is near the end of a long discussion on Tekscopes.
?
Leon Robinson ?? K5JLR

Political Correctness is a Political Disease.



From: "helmutsennewald@... [LTspice]"
To: LTspice@...
Sent: Friday, July 29, 2016 1:40 PM
Subject: Re: [LTspice] Google groups



Hello Leon,

Have you ?looked at group.io?
There is nothing to find about Tekscopes anymore in group.io. It seems they deleted this group.

Best regards,
Helmut





Re: LTspiceXVII released

 

Hello Helmut,

I now understand the cause of the strange behavior.? I had "Enable beta circuit matrix operations" checked in the Hacks! tab of the Control Panel.? Apparently, among that option's various functions, it removes single component circuit islands.

What is interesting is that my selection of this option managed to persist through a complete reinstall of the software.? The Control Panel's persistent settings must be stored in the registry or in a configuration file that does not get erased or overwritten.? I will have to go looking for where such items are stored with the new LTspice.


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

Hello Helmut,

V1 1 0 pulse(0 1 0 1u 1u .5m 1m)
R1 2 0 1.5k
*R2 2 0 1g
.machine
.output (2) V(1) < .5
.endmachine
.tran 3m

If I run the above netlist, it only produces 1mV on node 2, but the error log shows why:

WARNING: Less than two connections to node 1.? This node is used by V1.
WARNING: Less than two connections to node 2 of instance R1:? Node and device optimized out.

If I un-comment R2, then it produces 1.5V on node 2.? This is unexpected.? Using the netlist exactly as shown in the Help file does not produce 1V as expected (at least for me).

Your netlist shown below works as expected.


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

Hello analogspiceman,

This works for me as I have expected. I don't see any mistake.

V1 1 0 pulse(0 1 0 1u 1u .5m 1m)
R1 2 00 1.5k
.machine
.output (2) V(1) < .5
.endmachine
.tran 3m
?
VX 00 0 0.1

Best ?regards,
Helmut


Re: LTspiceXVII released

 

analogspiceman wrote:

? ?"The above netlist produces only 1mV on node 2."

?My copy of LTspiceXVII is not up to date; but I get 1V pulses on node 2.

I am running the 32-bit version on Windows 7, on this computer.

Interesting.

Andy



Ferrite Beads

 

I have attempted to add the Laird Ferrite Bead Library to LTSpice without success.? I can get the symbol onto the schematic but not the model or lib for a particular ferrite.? Any suggestions.? Looks like the Wurth ferrites in my LTSpice are encrypted.?



Re: Google groups

 

Hello Leon,

Have you ?looked at group.io?
There is nothing to find about Tekscopes anymore in group.io. It seems they deleted this group.

Best regards,
Helmut


Re: Google groups

 

The Tekscopes group looked at this several months ago, and came up with a solution
though not perfect, appears to be a workable one.
All messages and I think files, photos? were backed up to another site, I don't remember
with out searching the Tekscopes messages and holding it in reserve if DISASTER came.

This took a while to find.

From a Teckscopes Message dated Apr 16 at 11:01 AM

On 16/04/2016 10:27 AM, Michael Dunn md@... [TekScopes] wrote:
>
>
> Note that the transfer will not include files or photos. I've asked if
> this
> functionality is forthcoming. Then again, it may be worth starting from
> scratch so that the areas can be better organized, though that would
> entail
> some effort given the quantity of files.
>
I have successfully downloaded all files and photos (and up to April
2014 of the messages) . I am in the process of uploading them to a
web-based storage location and creating a secure https encrypted front
end for access by members of this group (I am assuming that since this
group is private that you all don't want them generally available to
anonymous persons).

I can certainly make them available for Groups.io to access by ftp or cURL.

One thing that I have noticed: Yes there are probably 8,000 members. But
likely 7,800 of them have not been active for at least 2 years. Hundreds
or thousands, dating back to the year 2000, have 1 to 3 posts.

If a huge number of people suddenly tag an unexpected e-mail from
Groups.io as spam, there is a strong likelihood that the group will get
blacklisted by the anti-spam organizations. You might want to filter the
membership list or have interested persons sign up themselves. But
that's just my 2?
?


Leon Robinson ?? K5JLR

Political Correctness is a Political Disease.



From: "dg1@... [LTspice]"
To: LTspice@...
Sent: Friday, July 29, 2016 11:24 AM
Subject: Re: [LTspice] Google groups



The choice is very painful..
We can stay with Yahoo groups and roll with the punches..
Based on Verizon and how it dealt with AOL, I suspect that in a year or two Yahoo groups will loose ? even the paltry support it has..
I am a member of some Google groups; Google is autocratic in its changes; but usually they post a workaround...
I am not partial to Google groups; Any group forum alternative would be acceptable.
Bottom line:
Verixon bought Yahoo---->AOL is a good case study of ?what they did...
ADI bought LTC------>Aquisition of PMI is a good lesson...
The very future of this group is threatened.. Let us not seek solace in the status quo..
Let us not jump into an unknown fire either...
Cheers
AG





Re: XP spontaneous close

 

Hello,

Please upload your file for a test if possible. I am interested.

?

?If you want that Mike takes care about your case, you have to send a bug report including the files to the email address given in the Help-About of the LTspice program.

Best regards,
Helmut


Re: Google groups

 

Personally I avoid google like the plague, I consider it serious spyware!!
I dont use google for searches, maps or groups.........


Re: XP spontaneous close

 

Hello Mike,
Recently on XP SP3 LTSpice IV 4.321 I open a schematic with a .plt file and click run and LTSpice closes. Same with no .plt instead click a circuit node before the run has ended. It's ok if I let it run to the end. Tried re-installing, same. Time to move up to Vista? Just kidding.


Re: Google groups

 

Hello,

The very big Yahoo group "Tekscopes" started to move ?to?the group "Groups.io" in April. A very few weeks later they stopped the move and are now back to Yahoo. I am sure they will stay with Yahoo as long as possible.?That's the same what I will do. Stay as long as possible.?

Best regards,
Helmut


Re: How about UCC25600 ? Re: course of HOWTO build models like (sanken) STR-A6100

 

Hello, :

I had been aware of that (TI) has a LLC product UCC25600. Is anyone interested in modeling behavior model of this ?
Or encrypted one ? Help the estimation of users' development ?

Those kind of simulation never gets high quality numerical quantities, but give the concept of the application behaviors.
Self modeling may involves imperfects, but it's just for fun.

Any opinion is appreciated.

Best regards.


Re: Google groups

 

The choice is very painful..
We can stay with Yahoo groups and roll with the punches..
Based on Verizon and how it dealt with AOL, I suspect that in a year or two Yahoo groups will loose ? even the paltry support it has..
I am a member of some Google groups; Google is autocratic in its changes; but usually they post a workaround...
I am not partial to Google groups; Any group forum alternative would be acceptable.
Bottom line:
Verixon bought Yahoo---->AOL is a good case study of ?what they did...
ADI bought LTC------>Aquisition of PMI is a good lesson...
The very future of this group is threatened.. Let us not seek solace in the status quo..
Let us not jump into an unknown fire either...
Cheers
AG


Re: LTspiceXVII released

 

Hello Helmut,

V1 1 0 pulse(0 1 0 1u 1u .5m 1m)
R1 2 0 1.5k
*R2 2 0 1g
.machine
.output (2) V(1) < .5
.endmachine
.tran 3m

If I run the above netlist, it only produces 1mV on node 2, but the error log shows why:

WARNING: Less than two connections to node 1.? This node is used by V1.
WARNING: Less than two connections to node 2 of instance R1:? Node and device optimized out.

If I un-comment R2, then it produces 1.5V on node 2.? This is unexpected.? Using the netlist exactly as shown in the Help file does not produce 1V as expected (at least for me).

Your netlist shown below works as expected.


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

Hello analogspiceman,

This works for me as I have expected. I don't see any mistake.

V1 1 0 pulse(0 1 0 1u 1u .5m 1m)
R1 2 00 1.5k
.machine
.output (2) V(1) < .5
.endmachine
.tran 3m
?
VX 00 0 0.1

Best ?regards,
Helmut


Re: LTspiceXVII released

 

Hello analogspiceman,

This works for me as I have expected. I don't see any mistake.

V1 1 0 pulse(0 1 0 1u 1u .5m 1m)
R1 2 00 1.5k
.machine
.output (2) V(1) < .5
.endmachine
.tran 3m
?
VX 00 0 0.1

Best ?regards,
Helmut