Re: LTspice XVII problems...
keantoken wrote:
"Also the Help dialog comes up but none of the help pages will show. I
think this could be a misconfiguration somewhere in Linux but I don't know
where."
If the Help doesn't load, you need to install wine-gecko into the same WINEPREFIX as LTspice. Wine-gecko implements a cut-down sort of Internet Explorer.
It used to be possible to force the LTspice CHM Help file to be displayed by a native Linux CHM viewer like kchm with a registry hack, but this stopped working a couple of years ago and I haven't tried it since. You can similarly coerce most applications running in WINE to use a native Linux application for specific file types, i.e. PDFs by a similar (WINE) registry hack.
Regards,
Tony
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Re: LTspice XVII problems...
keantoken wrote:
"Any thoughts on why it would not detect my 64-bit system?"
The 64bit LTspiceXVII will only be installed if you've taken the trouble to create a 64bit WINEPREFIX. Left to its own devices, WINEPREFIX will default to win32, therefore the X86 will be installed. If you just install all Windows application into default .wine environment, you will only get 32bit versions.
To create 64bit WINEPREFIX and install 64bit LTspiceXVII there, you type this in a terminal window:
env WINEPREFIX=$HOME/.ltspice64 WINEARCH=win64 wine "path-to-LTspiceXVII-installer"
I have noticed that even when the 64bit version is installed, a sync update pulls in the 32bit executable as well.
Regards,
Tony
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Hello Vlad
See the help with keyword "state"? [ .MACHINE -- Arbitrary State Machine ] in LTspice XVII
Regards
PhB
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> --- LTspice? Announcements ---
> LTspice XVII runs on 32- or 64-bit editions of Windows 7, 8 or 10.
> Windows XP is not supported. Windows XP users can run LTspice IV,
> which will still be available in observance of Linear Technology
> Corporation's zero obsolescence tradition.
> Mike Engelhardt
> Manager of Simulation Development
> Linear Technology Corporation
XVII runs fine in Wine 1.2.2 in Ubuntu 10.04. This version is from
April, 2010 and it only supports Win 95 to Win XP.
Mike
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Re: vc pot with internal resistance
Hello Vlad
You wrote :
"(it's unclear to me what that "p" means in A's formula, maybe 2 misspelled? "
Isn't it pi ?
Regards
PhB
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Hello analogspiceman
> The state machine appears to have a bug.? The nominal output amplitude is 1mV rather than 1V, so the output equations must be multiplied by 1k.? For example:
>
> .output (2) (V(1)<.5)*1k
> .output (3) (V(1)>.5)*1k
> .output (4) state*1k
What is this state machine? LTspice says "unknown control card .output...". I tried with a notmal voltage source, then with a NAND gate, the help has nothing on .output, the net seems to have no answers. How do I get there?
Vlad
______________________
-- holding, among others:
a universal analog/digital filter, block-level models
for power electronics (and not only), math blocks
with a more stream-lined approach, some digital
ADC, DAC, (synchronous-)counter, JKflop, etc.
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Re: vc pot with internal resistance
Hello Helmut
> Your example has roughly 1% of full scale non-linearity in the wiper-position versus control voltage.
>
>
What's necessary to modify in the atanh() function to get a
potentiometer which is exactly proportional to the control voltage?
I simply looked at the manual's expression for the level=2 switch which suggested that applying atanh() should correct it (it's unclear to me what that "p" means in A's formula, maybe 2 misspelled?). Still, note that, even if V(x) looks linear, the total resistance, as seen from V2's side, is simply awful. I'll be playing with this a bit, see where it goes, maybe the behavioural resistors can be avoided, after all? Wouldn't it have been nice to be able to specify your own transfer function, but have it calculated internally, something like Flux=f(x) or Q=f(x)...
Vlad
______________________
-- holding, among others:
a universal analog/digital filter, block-level models
for power electronics (and not only), math blocks
with a more stream-lined approach, some digital
ADC, DAC, (synchronous-)counter, JKflop, etc.
|
Re: LTspice XVII problems...
Hello
> Hello. I'm running 64-bit Linux, Debian.
> LTspice installs the x86 version, not the x64 version.
> The simulation command editor also mangles all the commands, replacing them with mangled copies of the .tran command.
>
Also the Help dialog comes up but none of the help pages will show. I
think this could be a misconfiguration somewhere in Linux but I don't
know where.
> Any thoughts on why it would not detect my 64-bit system?
Sounds like your wine install is incomplete, at least it seems to lack the mono package. Wine should have asked you to install it when running wine for the first time. Also, LTspice asks you which version you want to install, so it's a user choice. I'd recommend trying to force the installation in a new "wine bottle" (another WINEPREFIX and/or WINEARCH), then, if that fails, delete current wine configuration and installation (apt-get --purge autoremove) and clean reinstall. I'm not a guru, though, so take this with a tiny grain of salt.
Vlad
______________________
-- holding, among others:
a universal analog/digital filter, block-level models
for power electronics (and not only), math blocks
with a more stream-lined approach, some digital
ADC, DAC, (synchronous-)counter, JKflop, etc.
|
Hello Yann,
Please always download LTspiceXVII and LTspiceIV from the official web page.
Best regards, Helmut
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Hello Mike,
It looks really great. Just one question: where can we download this new version of LTspice, please?
Many thanks for your efforts to provide this wonderful tool ;-)
On 29 July 2016 at 00:07, panamatex@... [LTspice] <LTspice@...> wrote:
?
??????? --- LTspice? Announcements ---
The major new release of LTspice is today.
LTspice XVII is partial rewrite of LTspice IV with
a modern graphics library for native multi-monitor
support. XVII also includes:
? - 64-bit support
? - UNICODE (use any character of any living language)
? - New device equations(IGBT, diode soft recovery, and
??? an arbitrary state machine)
? - Improved GUI: Editors for most SPICE commands
? - Extensions to Microsoft Windows for schematic'
??? thumbnail previews
?
LTspice XVII runs on 32- or 64-bit editions of Windows 7,
8 or 10.? Windows XP is not supported. Windows XP users
can run LTspice IV, which will still be available in
observance of Linear Technology Corporation's zero
obsolescence tradition.
Also, I see what looks a malicious software distributed
using the Linear Technology Corporation trademark of
LTspice.? It purports to be a LTspice IV repair tool.
Please inform me at LTspice@... if you have been
impacted by this.
?? Mike Engelhardt
?? Manager of Simulation Development
?? Linear Technology Corporation
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Re: Storing and retrieving use symbols
Hello Gordc,
The solution is simple.?
Download the new LTspiceXVII and set the extra symbol directories in the "Control Panel".
Best regards, Helmut
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Hello Jim,
>?Any word about Mac version?
I guess ?the Mac version will lag the PC for quite some while.?
Best regards, Helmut
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Re: Transistor two port analysis
Bordodynov
Great answer!!
Thank you very much.
?and
Thanks all for your suggestions
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Re: course of HOWTO build models like (sanken) STR-A6100
Hi, Andy:
Thank you for the opinion. Yes, it's horizontal. (It's late, and I felt sleepy.)
I have fixed the TL431/TI with LT1431 (LTspice built-in lib). The file is at here: I had been aware of the Ix current (constant current source to feed FB) would affect the Vsc ripple, but it's not mentioned the absolute value. I guess that's secret parameters of the vendor.
I don't have the ability to reveal any secrets of the vendor, it's just for fun and some simple circuit topology test.
Any opinion is appreciated.
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Re: Storing and retrieving use symbols
Gordc asked how to add a symbol to a schematic, from another directory:
? ?"The problem is that my symbol is in folder ....LTSpiceIV\Projects ..."
My advice applies only to LTspiceIV.? I do not have enough familiarity yet with the new LTspiceXVII, but I believe it has improves the library management capabilities.
LTspiceIV can get symbols from only two places: (1) ?LTspice's own symbols area (...LTspiceIV\lib\sym) and subdirectories of it, or (2) ?the current working directory. That's it.? No other directories can be used.? But let's expand on that.
The "current working directory" is the one where LTspice opens and saves schematics.? That directory is not fixed and can change from moment to moment.? It's important to understand that.
If you start LTspice by clicking on a desktop LTspice icon, then the initial working directory is specified by that Windows icon, and it is probably set (by default) to the same folder that holds the LTspice program itself.? That is NOT a good place to have your schematics or symbols!? So that should never be left as your current working directory. ?(This is probably what happened when you wrote your question.? The ...\LTspiceIV folder WAS the current working directory at that moment.)
If you start LTspice by double-clicking on a *.asc file, or if you have LTspice running already and open a *.asc file from the disk, or if you save the schematic to a *.asc file, then the current working directory becomes the one that holds that .asc file.
LTspice can "see" and load any symbols that are in the current working directory.
Therefore, it is recommended (by me at least) that you put your own symbols in the same directory or directories with the schematics that will use them.
And that directory should be nowhere near the Windows "Program Files" area.? Use a folder that you have full control over.
Having said this, there is an alternative.? I'll get to that in just a moment.
? ?"I thought it was good practice to keep user symbols out of the LTSpice main directory."
I think it is.? However, you can do it.
You can keep your own symbols separate from the ones that come with LTspice, by creating subdirectories of LTspiceIV\lib\sym and using them for your custom symbols.
For example: ...LTspiceIV\lib\sym\Projects
Then [Projects] will show up in the lower window when you go to add Components to your schematic.
Because Windows likes getting in the way, consider installing LTspice somewhere other than the default "Program Files" area.? Install it in a directory where you have full control.? Then Windows won't interfere.
So, you have really two choices:
- Put your symbols in the same folders with the schematics, or - Put your symbols in LTspice's library area, perhaps in subdirectories.
Between the two, I prefer the first.
Regards, Andy
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Re: Is direct contact okay?
I am not sure why you wish to model saturation in your current transformer (normally you design to stay far away from that condition), but to do so, you will need core information: ID, OD and width (to get the cross sectional area and length) and the core material (to get the magnetic parameters Bs, Br, Hc). ---In LTspice@..., <4vl7aujnwrex7ropketfjd7le5afsie4zyue7rcb@...> wrote : analogspiceman
Are you okay to help me out directly based on the simulations you have posted in the LTSpice Group?
I would appreciate some help (for now at least) with simulating an actual Current Transformer (CT), starting from e.g. your "CurrentSense.asc" simulation.
I do not really want to ask detailed questions relating to our R&D Application in a Public Forum.
Thanks and Regards
Henry Kafeman
|
The state machine appears to have a bug.? The nominal output amplitude is 1mV rather than 1V, so the output equations must be multiplied by 1k.? For example: .output (2) (V(1)<.5)*1k .output (3) (V(1)>.5)*1k .output (4) state*1k Also (not bugs): The .output are voltage sources, but are considered to be floating, thus they must be loaded with a resistor or other device that provides a path to ground. The triptdt parameter only affects output edges that are triggered by state changes, not output edges that are dependent only on inputs. ---In LTspice@..., <helmutsennewald@...> wrote : Hello,
I just got a message from Mike that LTspiceXVII is now relased. Mike, thank you for the continuous improvements of LTspice during the last 17 years.
?
The advertised features from this webpage are below.
LTspice?XVII LTspice XVII?is?partial rewrite of LTspice IV with a modern graphics library for native multi-monitor support. XVII also includes: - 64-bit support
- UNICODE (use any character of any living language)
- New device equations (IGBT, soft recovery, and an arbitrary state machine)
- Improved GUI: Editors for most SPICE syntax commands
- Extensions to Microsoft Windows for schematic thumbnail previews
LTspice XVII runs on 32- or 64-bit editions of Windows 7, 8 or 10. Windows XP is not supported. Windows XP users can run LTspice IV, which will still be available in observance of Linear Technology Corporation's zero obsolescence tradition.
Best regards, Helmut
|
Since it's spicy, it might well be 'Mike's super-hot vindaloo'. ? With best wishes DESIGN IT IN! OOO ¨C Own Opinions Only J M Woodgate and Associates Rayleigh England ? Sylvae in aeternum manent. ?
toggle quoted message
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From: LTspice@... [mailto:LTspice@...]
Sent: Friday, July 29, 2016 12:08 AM
To: LTspice@...
Subject: [LTspice] Re: LTspiceXVII released? ? ...umm, Helmut...are they gonna call this LTSPICE 17? or LTSPICE 5?
Or Mike E.'s? strawberry wonder pudding?
<---is bad at attempts at Brit* humour.
Oh and by the way Helmut, tell mr Mike...I noticed something weird (workable perhaps)..but still
""unusual"".
When activating the 64-bit version of LTSPICEXVIII...using WINE loader (not Qt WINE) 1.7 in Fedora 21
FEL (Fedora Electronics Lab)...I briefly get a "black box window" (instead of the usual WINE box).
Might be a graphics memory management issue....the program still ran properly (I have not tested the
32-bit version of LTSPICEXVIII)...hmmm.
Could indicate "issues down the road" mr. Mike (all the related graphics worked as well including FFT
transforms and inverse-transforms(.
W. Warren
*(hopes John can think of something better...just a homeboy here in Fort Worth Texas)
|
Wow!
Thanks for the new version including TVS Diodes.
I think I saw a problem with one of the models. I have given some information to see if you duplicate my test. Maybe I am doing something wrong.
The SMCJ33A Model seems to have issues with low clamp currents.
Set up the following scenario:
Test Circuit
Circuit is Voltage Source
Series Current Limiting Resistor
Parallel TVS after the Series Current Limit Resistor
Ground
Make a pulse source
Starting voltage = 28V
Vmax = 80V
Delay =10ms
Rise & fall times = 1us
Time on = 50ms
Period = 100ms
Series Resistor Initial Value = 100m
TVS = SMCJ33A
Simulation set-up
Stop time = 200m
Time Step = 0.1us
Don¡¯t open the simulation with DC at 0V.
Run the simulation with the 100m Ohm Series Resistor
Probe the source voltage on the left side of the series limiting resistor.
Probe the TVS Voltage at the right side of the series limiting resistor.
Clamped Waveform looks marginally correct.
Observation of source waveform:
The waveform starts at 28V, rises to 80V Pulse, returns to 28V, starts identical cycle. Correct
Observation of TVS waveform:
The waveform starts at 28V, rises to 64V Pulse, returns to 28V, starts identical cycle. The waveform fall below 24V (the <24V is not correct).
Change the 100m resistor to 100 Ohms.
Run the simulation again with the 100 Ohm Resistor
Clamped Waveform looks is wrong
Observation of source waveform:
The waveform starts at 0V, rises to 80V Pulse, returns to 28V, starts identical cycle. Correct
Observation of TVS waveform:
The waveform starts at 0.93V, rises to 1.064V Pulse, returns to 0.93V, starts identical cycle. The waveform should loosely follow the previous TVS Waveform above. It doesn¡¯t and appears to be a representation of the clamped current within the TVS device (which is also incorrect ¨C there should be no current flowing through the device). If a 10k Load is placed across the TVS is still does the same thing.
The SMBJ24CA doesn¡¯t have the same behavior. It seems to be much better behaved. Change the Starting Voltage to 15V for that simulation.
Can you check it out ¨C it looks like there is a problem with the SMCJ33A TVS Model.
Thanks,
Ross
From: LTspice@... [mailto:LTspice@...]
Sent: Thursday, July 28, 2016 6:09 PM
To: [LTspice] group
Subject: Re: [LTspice] Re: LTspiceXVII released
"are they gonna call this LTSPICE 17 or LTSPICE 5?"
It seems that they (LTC) or he (Mike) have given it the name LTspice XVII. This program is released. The name is what it is.
By the way, you might want to pay closer attention to the capitalization. Some people get upset when it is done wrong. Neither Mike nor LTC uses "LTSPICE". Also, only two I's in XVII.
"Oh and by the way Helmut, tell mr Mike...I noticed something weird ..."
You should tell him yourself; don't make Helmut do the work for you. Mike shows how to report bugs and other problems. See Help -> About LTspice XVII. (But I am not sure if this one is an LTspice issue or a Wine issue.)
"...just a homeboy here in Fort Worth Texas"
Very much O.T. now -- but I wonder why you posted that link earlier today to a UML (Massachusetts) webpage which didn't have any obvious links to the T.I. patent issue you were describing. Fort Worth and Lowell are very much not local to one another. It just had my curiosity. No big deal.
Andy
[Non-text portions of this message have been removed]
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Hello. I'm running 64-bit Linux, Debian.
LTspice installs the x86 version, not the x64 version.
The simulation command editor also mangles all the commands, replacing them with mangled copies of the .tran command.
Also the Help dialog comes up but none of the help pages will show. I think this could be a misconfiguration somewhere in Linux but I don't know where.
Any thoughts on why it would not detect my 64-bit system?
|
Tony Casey
Yann Garcia