Keyboard Shortcuts
Likes
- LTspice
- Messages
Search
|
Re: LTspiceXVII released
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:
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 |
||
|
Re: LTspiceXVII released
John Woodgate
¿ªÔÆÌåÓýSince 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. ? 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? |
||
|
Re: LTspiceXVII released
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] |
||
|
LTspice XVII problems...
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? |
||
|
Storing and retrieving use symbols
I need help in placing a symbol (of my own creation) onto a new schematic. The 'Select Component Symbol' window only gives two directories (.....LTSpiceIV and ....LTSpiceIV\lib\sym) The problem is that my symbol is in folder ....LTSpiceIV\Projects and therefore not accessible from Select window. I thought it was good practice to keep user symbols out of the LTSpice main directory. So what is the solution for this? Thanks Gordc |
||
|
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 |
||
|
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) |
||
|
Yahoo!Group delays
Yahoo seems to have significant delays today, processing some of the messages here in this group.? They seem to be random -- some get through quickly, others are taking many many hours.? We just have to be patient. If you posted a message and have not seen it yet, that is probably why.???Log-jams happen sometimes. I didn't read about this on a blog or status board.? It's just my own observation. Andy |
||
|
Re: Schottky Diode Models
Thanks, I will try that out on Friday or Monday. out of interest how did you determine the various values to use from the Datasheet, etc.? Meanwhile, I have actually managed to get a corrected version of the BAR43SFILM model from ST Microelectronics via a Distributor that provides local support. I have been told the model library on the web site will be updated in due course (I don't know if just for this particular diode or the family, etc.). For reference the current library is version 3 and the .lib file in the .zip file is dated 19th April 2016 (although inside the file it says February 2016). FYI - Pretty much every value in the new model is very different to the original model! Thank you for your help. It will be interesting to compare your version with theirs as they are completely different (for instance their IBV is a fixed value (not an expression based on temp!)! Thanks Henry Kafeman |
||
|
Re: LTspiceXVII released
Any word about Mac version? Thanks Jim Wagner Oregon Research Electronics From: "helmutsennewald@... [LTspice]" To: "LTspice" Sent: Thursday, July 28, 2016 3:00:13 PM Subject: [LTspice] LTspiceXVII released 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:
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 |
||
|
XVII
??????? --- LTspice? Announcements --- The major new release of LTspice is today. LTspice XVII is partial rewrite of LTspice IV with ? - 64-bit support Also, I see what looks a malicious software distributed ?? Mike Engelhardt |
||
|
LTspiceXVII released
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:
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 |
||
|
Re: Analog Devices to buy LT!
Andy has nailed it. ?Anything can happen and outside speculation ¨C or even internal speculation ¨C is pretty much a waste of time. ?The final decision may not even have any logic to it.
The question of the fate of LTspice is a good one, but only time will tell the answer. ?Mike may have more concern for his job (and the fate of LTspice) post-announcement than he did pre-announcement, but it's quite likely that his fate, and the fate of the software, have not yet been decided. ?And they might become unlinked altogether. ?No offense to anyone, but it's not going to be up to Mike. ?The elephants dance and the mice stay out of the way. |
||
|
Re: Analog Devices to buy LT!
¿ªÔÆÌåÓýAlready too much speculation is going on in this thread, mostly by people who don't understand the arcanes of a big company. It's not worthy of a supposedly scientific group. Le 28/07/2016 ¨¤ 20:09, Jim Wagner
wagnejam99@... [LTspice] a ¨¦crit?:
?
|
||
|
Re: Analog Devices to buy LT!
¿ªÔÆÌåÓýI generally have found over the last 30 years of business that postulating about how businesses are re-organized is pointless. ? I came to the conclusion that Managers were reading my brain and doing the exact opposite. ? So anything could happen, I might even win the UK National Lottery¡ ? Dave G4UGM ? From: LTspice@... [mailto:LTspice@...]
Sent: 28 July 2016 20:04 To: [LTspice] group Subject: Re: [LTspice] Re: Analog Devices to buy LT! ? ? ?"Who own the right of LTspice ? company or Mike the author ?" ? When you click Help -> About LTspiceIV, you will see that Linear Technology owns the copyright of LTspice, and Mike is the Author.? I would also guess that LTC owns the product, just like all the ICs their employees have designed. ? Like most products, if an employee leaves a company, the things they designed for the company, remain the property of the company.? Otherwise, a lot of products would mysteriously disappear from a company's product line, when its designer(s) happened to switch jobs.? That generally doesn't happen. ? ? ?"If so, the support of LTspice might be not so much." ? Remember that LTspice is supported not only by Mike. ? ? ?"If Mike leaves...nothing stopping him from ? ? ?? developing a new "LTspice compatible" ? ? version of simulation software..." ? Well, that's where it gets a lot less clear.? There may be things stopping that. ? Many companies, especially in the technology sector, have non-compete provisions, which deny a former employee from developing a new version of their old product for a period of time, and/or developing the same product elsewhere.? For him to come up with a new LTspice-like simulator, either it would have to be significantly different (no code or algorithms he developed while at LTC), or it would have to be with ADI's permission to take it with him -- essentially a spin-off? ? Regardless, all this is meaningless speculation.? We have no reason to believe that ADI would not continue to support LTspice, nor that Mike would leave. ? Regards, Andy (also not an employee of either Linear Technology or Analog Devices) ? ? |
||
|
Sub circuit heat dissipation not showing
Hello, I am relatively new at LTspice. I was wondering why a sub circuit for TIP142 and TIP147 doesn¡¯t calculate the heat dissipation when I run my circuit and hover over the symbol with the ALT key held down. All I see is the apparent formula. This feature works in non-darlingtons.? ?
Thanks, Brad |
||
|
Re: Analog Devices to buy LT!
John Woodgate
I think all this speculation is unwise. It just might give some corporate nincompoop the idea of putting a price on the product. A price compatible with its excellence. OIEO 10*X kilobucks.
With best wishes DESIGN IT IN! OOO ¨C Own Opinions Only <> www.jmwa.demon.co.uk J M Woodgate and Associates Rayleigh England Sylvae in aeternum manent. From: LTspice@... [mailto:LTspice@...] Sent: Thursday, July 28, 2016 8:04 PM To: [LTspice] group <LTspice@...> Subject: Re: [LTspice] Re: Analog Devices to buy LT! "Who own the right of LTspice ? company or Mike the author ?" When you click Help -> About LTspiceIV, you will see that Linear Technology owns the copyright of LTspice, and Mike is the Author. I would also guess that LTC owns the product, just like all the ICs their employees have designed. Like most products, if an employee leaves a company, the things they designed for the company, remain the property of the company. Otherwise, a lot of products would mysteriously disappear from a company's product line, when its designer(s) happened to switch jobs. That generally doesn't happen. "If so, the support of LTspice might be not so much." Remember that LTspice is supported not only by Mike. "If Mike leaves...nothing stopping him from ? ? developing a new "LTspice compatible" version of simulation software..." Well, that's where it gets a lot less clear. There may be things stopping that. Many companies, especially in the technology sector, have non-compete provisions, which deny a former employee from developing a new version of their old product for a period of time, and/or developing the same product elsewhere. For him to come up with a new LTspice-like simulator, either it would have to be significantly different (no code or algorithms he developed while at LTC), or it would have to be with ADI's permission to take it with him -- essentially a spin-off? Regardless, all this is meaningless speculation. We have no reason to believe that ADI would not continue to support LTspice, nor that Mike would leave. Regards, Andy (also not an employee of either Linear Technology or Analog Devices) |
||
|
Re: Analog Devices to buy LT!
? ?"Who own the right of LTspice ? company or Mike the author ?" When you click Help -> About LTspiceIV, you will see that Linear Technology owns the copyright of LTspice, and Mike is the Author.? I would also guess that LTC owns the product, just like all the ICs their employees have designed. Like most products, if an employee leaves a company, the things they designed for the company, remain the property of the company.? Otherwise, a lot of products would mysteriously disappear from a company's product line, when its designer(s) happened to switch jobs.? That generally doesn't happen. ? ?"If so, the support of LTspice might be not so much." Remember that LTspice is supported not only by Mike. ? ?"If Mike leaves...nothing stopping him from ? ? ?? developing a new "LTspice compatible"? ? version of simulation software..." Well, that's where it gets a lot less clear.? There may be things stopping that. Many companies, especially in the technology sector, have non-compete provisions, which deny a former employee from developing a new version of their old product for a period of time, and/or developing the same product elsewhere.? For him to come up with a new LTspice-like simulator, either it would have to be significantly different (no code or algorithms he developed while at LTC), or it would have to be with ADI's permission to take it with him -- essentially a spin-off? Regardless, all this is meaningless speculation.? We have no reason to believe that ADI would not continue to support LTspice, nor that Mike would leave. Regards, Andy (also not an employee of either Linear Technology or Analog Devices) |
||
|
Re: Analog Devices to buy LT!
¿ªÔÆÌåÓýIf Mike leaves...nothing stopping him from developing a new "LTspice compatible" version of simulation software... On Jul 28, 2016, at 11:09 AM, Jim Wagner wagnejam99@... [LTspice] <LTspice@...> wrote:
|
||
Mike Engelhardt