On Sun, 23 Jul 2017 10:39:29 -0700, John Larkin <jjlarkin@highlandtechnology.com> wrote: [snip]> >LT Spice apparently compiles the netlist into raw x86 machine code >before it runs a sim. Maybe the models are actually x86 code? > >Do other spices do this? >[snip] That's the BS Mikey likes to bloviate. Feed LTspice a netlist of non-LT parts and it slows to the same speed as about every other modern simulator. Select "Alternate Solver" so that you actually get accurate results and it's slower. ...Jim Thompson -- | James E.Thompson | mens | | Analog Innovations | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | STV, Queen Creek, AZ 85142 Skype: skypeanalog | | | Voice:(480)460-2350 Fax: Available upon request | Brass Rat | | E-mail Icon at http://www.analog-innovations.com | 1962 | I'm looking for work... see my website. Thinking outside the box...producing elegant & economic solutions.
LT spice, leakage inductance
Started by ●July 20, 2017
Reply by ●July 23, 20172017-07-23
Reply by ●July 23, 20172017-07-23
On Sun, 23 Jul 2017 08:06:58 -0700, Joerg <news@analogconsultants.com> wrote:>On 2017-07-22 20:42, John Larkin wrote: >> On Sat, 22 Jul 2017 12:50:57 -0700, Joerg <news@analogconsultants.com> >> wrote: >> >>> On 2017-07-22 12:16, John Larkin wrote: > >[...] > > >>> >>>> [2] NI understands this dynamic too. When I was a kid, I worked >>>> summers in a college electronics lab, for 85 cents an hour. Fairchild >>>> and TI would send us boxes of their newfangled silicon transistors; >>>> same idea. >>>> >>> >>> Oh yeah. I have yet to encounter a client where their test lab is not >>> running on NI modules and LabView. At one we needed to switch some >>> higher voltage and a simple relay board cost hundreds of Dollars. >> >> Yesterday one of my customers was complaining about critical NI >> modules, used in their test stands, going EOL. They are scouring ebay >> for more. >> > >Excellent opportunity to present a new Highland Technology module that >can replace it, if you guys have the time :-)We have considered moving some of our stuff to PXI, but the VME niche is probably better for us. 3U PXI modules are also too small to do massive amounts of i/o. I suppose we could do some PXI if some user wanted a bunch of it. But it's hard to compete with ebay. -- John Larkin Highland Technology, Inc lunatic fringe electronics
Reply by ●July 23, 20172017-07-23
On Sun, 23 Jul 2017 16:37:01 -0000 (UTC), Cursitor Doom <curd@notformail.com> wrote:>On Sun, 23 Jul 2017 08:02:37 -0700, John Larkin wrote: > >> Buy a six-pack? > >We don't have those in the UK. Ours tend to come in fours of either 500ml >or a pint per can. And our beer is more hoppy/less malty than yours.We have all sorts of beer here, most too hoppy for our tastes. We like Wexford and Harp and Gunnness (Mo drinks the black tar stuff, I like the Blonde. Do you get the Guinness Blonde back there?) -- John Larkin Highland Technology, Inc lunatic fringe electronics
Reply by ●July 23, 20172017-07-23
On Thu, 20 Jul 2017 11:39:25 -0700, John Larkin <jjlarkin@highland_snip_technology.com> wrote:> > >I'm simulating a flyback switcher and noticed that any K < 1 in the >transformer radically slows down the sim, which is annoyingly slow >already... 90 seconds to sim 60 ms of startup and a little pulsed load >blip. Maybe 6:1 slower with a little leakage inductance. So I only >include leakage inductance to tweak the snubber.It's funny how this thread has become an LTspice 'love fest', when the original post (above) was concerning LTspice CHOKING over leakage inductance >:-} Bwahahahahahahaha! ...Jim Thompson -- | James E.Thompson | mens | | Analog Innovations | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | STV, Queen Creek, AZ 85142 Skype: skypeanalog | | | Voice:(480)460-2350 Fax: Available upon request | Brass Rat | | E-mail Icon at http://www.analog-innovations.com | 1962 | I'm looking for work... see my website. Thinking outside the box...producing elegant & economic solutions.
Reply by ●July 23, 20172017-07-23
On Sun, 23 Jul 2017 10:34:46 -0700, John Larkin wrote:> The burgers are really good lately. And the weather has been glorious. > Drop in.I should take him up on this offer right away, Joerg; you might have to wait 19 years for another chance! ;->
Reply by ●July 23, 20172017-07-23
On Sun, 23 Jul 2017 10:52:03 -0700, John Larkin wrote:> We like Wexford and Harp and Gunnness (Mo drinks the black tar stuff, > I like the Blonde. Do you get the Guinness Blonde back there?)Yeah, but they call it something else IIRC. Guinness doesn't travel well, I'm told. There's a general agreement around the world that it only tastes like it should around Dublin and it's environs. By the time it gets to England, even, it's already insipid with no detectable flavour at all; a serious disappointment.
Reply by ●July 23, 20172017-07-23
On Sun, 23 Jul 2017 10:33:34 -0700, Jim Thompson <To-Email-Use-The-Envelope-Icon@On-My-Web-Site.com> wrote:>On Sat, 22 Jul 2017 07:43:08 -0700, John Larkin ><jjlarkin@highlandtechnology.com> wrote: > >[snip] >> >>Colleges use LT Spice all over the world. It has its own culture. >>Culture matters. > >Actually most colleges and universities use PSpice as their preferred >simulation instructional tool.... with the OrCAD GUI... gag me with a >spoon ;-) > > ...Jim ThompsonLike this college... <http://www.analog-innovations.com/SED/Excerpt_from_Tulane_Catalog.pdf> ...Jim Thompson -- | James E.Thompson | mens | | Analog Innovations | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | STV, Queen Creek, AZ 85142 Skype: skypeanalog | | | Voice:(480)460-2350 Fax: Available upon request | Brass Rat | | E-mail Icon at http://www.analog-innovations.com | 1962 | I'm looking for work... see my website. Thinking outside the box...producing elegant & economic solutions.
Reply by ●July 23, 20172017-07-23
On Sun, 23 Jul 2017 17:57:10 +0100, Kevin Aylward wrote:> Its still way, way better that the bigger shit GUI of LTSpice.GUIs are to a great extent simply a matter of personal preference. I looked at your page: http://www.anasoft.co.uk/screenshots.htm And have to say I find LT's to be *much* more readable than that example. But YMMV, along with everyone else's.
Reply by ●July 23, 20172017-07-23
On 7/23/2017 12:36 PM, John Larkin wrote:> On Sun, 23 Jul 2017 17:58:19 +0100, "Kevin Aylward" > <kevinRemovAT@kevinaylward.co.uk> wrote: > >> "Joerg" wrote in message news:etjs8hF5d1eU1@mid.individual.net... >> >> >> >> >>>> The wild claim that LTspice would spawn 7 digit generated extra sales >>>> is totally unsupported and sounds like something Trump could say, or >>>> not even him, like 100 times Trump. >>> >> >>> Obviously I can't reveal details but I developed a circuit around a >>> PFC-capable chip from LTC that enabled me to do something that hasn't been >>> done before (and was considered impossible) because it allowed direct >>> access to the internal modulator. This is in mass production now, >>> regardless of the fact that each chip costs above $2. Because it's worth it >>> and makes the client money. >> >>> Then there was a boost converter chip that I used in very unorthodox ways >>> because LTSpice lets me simulate driving it via the compensator pin. I >>> discovered a shortcoming on that chip, had a chat with the guys at LTC >>> about it and ... shortly thereafter an A version came out with that issue >>> fixed. Try that with another manufacturer. >> >> None of that has any baring as to whether LTSpice generates large extra >> revenues. >> >> If LTSpice didn't exist, LT would have had to make models for Spice3/XSpice >> compatible simulators. >> >> All this this shit about LTSpice has propriety models that are way faster >> than the Spice3/XSpice, is just that, bullshit. Sure, LTSPice is fast on its >> own, but it it aint enough to make a difference in the real world. >> >> XSpice is a full event driven mixed mode simulator. All the "propriety >> model" stuff like ideal logic and is all handled in the wash in XSpice, and >> get this, its compatible to any other vender that uses XSpice. >> >> Even without using the mixed mode stuff, a behavioural SMPS in SS can run >> in 5 Secs. >> >> You are simply confused on buying parts that do a job correctly, and >> simulating it. If another part could do the same job , is available and >> cheaper, and if you don't use this other part, then I wouldn't hire you to >> design my products. Period. >> > > I'm not absolutely certain that I'd want to work for you.I am absolutely certain that I would *not* want to work for him. I installed his SS application and it is not intuitive. In fact, it sucks.
Reply by ●July 23, 20172017-07-23
On Sun, 23 Jul 2017 12:02:56 -0700, Jim Thompson <To-Email-Use-The-Envelope-Icon@On-My-Web-Site.com> wrote:>On Sun, 23 Jul 2017 10:33:34 -0700, Jim Thompson ><To-Email-Use-The-Envelope-Icon@On-My-Web-Site.com> wrote: > >>On Sat, 22 Jul 2017 07:43:08 -0700, John Larkin >><jjlarkin@highlandtechnology.com> wrote: >> >>[snip] >>> >>>Colleges use LT Spice all over the world. It has its own culture. >>>Culture matters. >> >>Actually most colleges and universities use PSpice as their preferred >>simulation instructional tool.... with the OrCAD GUI... gag me with a >>spoon ;-) >> >> ...Jim Thompson > >Like this college... > ><http://www.analog-innovations.com/SED/Excerpt_from_Tulane_Catalog.pdf> > >Or these... <http://people.seas.harvard.edu/~jones/es154/pages/PSpice/PSpice.html> <http://home.olemiss.edu/~atef/engr360/tutorial/qgspice.html> <https://www.seas.upenn.edu/~jan/spice/PSpice_ReferenceguideOrCAD.pdf> <https://www.ecse.rpi.edu/courses/F16/ENGR-2300/OrCAD/download.html> <http://www.eng.auburn.edu/~troppel/pspice_links.html> <http://www.engr.uky.edu/~cathey/pspice061301.html> <https://www.engr.colostate.edu/ECE562/Pspicetutorial.pdf> <https://www.csun.edu/~skatz/pspice_tutorials/pspice_tutorial_1.pdf> <https://engineering.purdue.edu/~ee255/lecturesupp_files/PSpice-Tutorial.pdf> <www.utdallas.edu/~yxc101000/courses/3111Lab/handouts/Lab%201.pdf> <http://denethor.wlu.ca/PSpice/pspice_tutorial.html> <www.montana.edu/aolson/ee503/pspug.pdf> <www2.engr.arizona.edu/~mwm/classes/220/Lab_Resources/Installing_PSpice.pdf> <https://fenix.tecnico.ulisboa.pt/downloadFile/3779571241308/PSPICE_tutorial.pdf> <http://aries.ucsd.edu/najmabadi/CLASS/COMMON/PSPICE/PSpice_Notes_v5.0.pdf> <http://tuttle.merc.iastate.edu/ee201/spice/pspice_frequency_response.pdf> <https://www.uwibookshop.com/orcad-pspice-windows-vol-1-dc-ac-circuits3e> <http://www.emcs.org/acstrial/newsletters/spring10/ABriefSPICE.pdf> <https://peer.asee.org/electronics-work-bench-and-pspice-computer-aided-design-systems-as-educational-tools-for-second-and-fourth-year-university-courses-in-electronics.pdf> <http://homes.ieu.edu.tr/maskar/EEE232/General/ORCAD-PSPICE-Tutorial.pdf> <https://tutorials.wsu.edu/2015/11/17/orcad-pspice/> <http://www.uta.edu/ee/hw/pspice/pspice01.htm> <http://freedomuniversity.tv/blog/540/circuit-analysis-modeling-pspice-orcad-simulation-and-tutorial-voltage-divider> <https://usm.maine.edu/sites/default/files/engineering/EGN%20187_Sp16.pdf> <http://msic.ee.ncku.edu.tw/course/Electronics%20Lab%20I/Lecture%20Note/Lab2_Pspice_Analyses.pdf> <http://library.puc.ac.bd/cgi-bin/koha/opac-search.pl?q=ccl=pb%3APearson%20%2C%20and%20su-ut%3APSpice.&sort_by=author_az&limit=au:Rashid,%20M.%20H.> <http://hmbassi.kau.edu.sa/Pages-PSPICE-Software-En.aspx> <https://mycourses.aalto.fi/pluginfile.php/177181/mod_folder/content/0/Guidelines%20for%20simulations_2016.pdf?forcedownload=1> <https://shop.uofastore.com/p-25570-pspice-for-windows-p.aspx> <https://mil.ufl.edu/3111/classes/20.pdf> <http://gato-docs.its.txstate.edu/jcr:7c8c6fbe-8ace-40d5-ad5f-8b1c0ff01e4b/PSPICEManualfinal.pdf> <https://www.ece.vt.edu/undergrad/tutorials/pspice> <http://my.fit.edu/~kostanic/Wireless%20design%20concepts/Misc/PSPICE%20tutorial.pdf> <https://www.cpp.edu/~prnelson/courses/pspice_tutorial.pdf> <http://web.mit.edu/course/6/6.334/pspice.html> <http://www.mwftr.com/eelab/Pspice-opamp.pdf> <http://www.hh.se/download/18.545c291a12c099564c68000269/lab1_101101.doc> <https://www.csuohio.edu/engineering/sites/csuohio.edu.engineering/files/EEC-470.pdf> <https://griffith.rl.talis.com/items/A46A23BC-5BBE-83B9-8414-9832790806AE.html?referrer=%2Flists%2F41BC4ED1-5814-0A8E-B122-1E765C04B51B.html%23item-A46A23BC-5BBE-83B9-8414-9832790806AE> That's enough, I'm tired >:-} ...Jim Thompson -- | James E.Thompson | mens | | Analog Innovations | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | STV, Queen Creek, AZ 85142 Skype: skypeanalog | | | Voice:(480)460-2350 Fax: Available upon request | Brass Rat | | E-mail Icon at http://www.analog-innovations.com | 1962 | I'm looking for work... see my website. Thinking outside the box...producing elegant & economic solutions.
