On Mon, 11 May 2015 19:01:40 -0500, "Tim Williams" <tiwill@seventransistorlabs.com> wrote:>"Jim Thompson" <To-Email-Use-The-Envelope-Icon@On-My-Web-Site.com> wrote >in message news:06d2lat69uque78p03931aie6mtvhe9lfk@4ax.com... >>>8 lines? Looks more like 20 to me. >>> >>>Tim >> >> That's LTspice's encryption scheme that adds all those extra >> characters. > >Well either way, your claim is absurd, because the file size (not that 2k >files are any concern these days) certainly isn't 8 lines, and without >cracked encryption (anyone know if LTSpice / PSpice / HSpice encryption >has been cracked? anyone working on it?), impossible to verify. > >There's also the possibility that fewer lines contain more math, resulting >in worse execution time or convergence anyway. > >But really, I'm guessing it's your tanh fit stuff, which you've posted >about publicly before. You also claim it's based on publically published >curves. So hiding it is all the more absurd... > >TimNew technique. It definitely works. Try it or not, I don't care. It was originally posted to the LTspice List where the question was broached initially. Those with interest in circuit work should subscribe to the LTspice List... you'll learn some new techniques... and not be annoyed by cockroach invasions into technical threads. ...Jim Thompson -- | James E.Thompson | mens | | Analog Innovations | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | San Tan Valley, 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 love to cook with wine. Sometimes I even put it in the food.
Update: Varistor/MOV Spice Modeling
Started by ●May 10, 2015
Reply by ●May 11, 20152015-05-11
Reply by ●May 11, 20152015-05-11
Den tirsdag den 12. maj 2015 kl. 02.02.11 UTC+2 skrev Jim Thompson:> On Mon, 11 May 2015 19:01:40 -0500, "Tim Williams" > <tiwill@seventransistorlabs.com> wrote: > > >"Jim Thompson" <To-Email-Use-The-Envelope-Icon@On-My-Web-Site.com> wrote > >in message news:06d2lat69uque78p03931aie6mtvhe9lfk@4ax.com... > >>>8 lines? Looks more like 20 to me. > >>> > >>>Tim > >> > >> That's LTspice's encryption scheme that adds all those extra > >> characters. > > > >Well either way, your claim is absurd, because the file size (not that 2k > >files are any concern these days) certainly isn't 8 lines, and without > >cracked encryption (anyone know if LTSpice / PSpice / HSpice encryption > >has been cracked? anyone working on it?), impossible to verify. > > > >There's also the possibility that fewer lines contain more math, resulting > >in worse execution time or convergence anyway. > > > >But really, I'm guessing it's your tanh fit stuff, which you've posted > >about publicly before. You also claim it's based on publically published > >curves. So hiding it is all the more absurd... > > > >Tim > > New technique. It definitely works. Try it or not, I don't care. It > was originally posted to the LTspice List where the question was > broached initially. > > Those with interest in circuit work should subscribe to the LTspice > List... you'll learn some new techniques... and not be annoyed by > cockroach invasions into technical threads. >apart from LTspice's encryption algorithm, how is there going to be much technical discussing about a binary blob? -Lasse
Reply by ●May 11, 20152015-05-11
On Mon, 11 May 2015 17:18:25 -0700 (PDT), Lasse Langwadt Christensen <langwadt@fonz.dk> wrote:>Den tirsdag den 12. maj 2015 kl. 02.02.11 UTC+2 skrev Jim Thompson: >> On Mon, 11 May 2015 19:01:40 -0500, "Tim Williams" >> <tiwill@seventransistorlabs.com> wrote: >> >> >"Jim Thompson" <To-Email-Use-The-Envelope-Icon@On-My-Web-Site.com> wrote >> >in message news:06d2lat69uque78p03931aie6mtvhe9lfk@4ax.com... >> >>>8 lines? Looks more like 20 to me. >> >>> >> >>>Tim >> >> >> >> That's LTspice's encryption scheme that adds all those extra >> >> characters. >> > >> >Well either way, your claim is absurd, because the file size (not that 2k >> >files are any concern these days) certainly isn't 8 lines, and without >> >cracked encryption (anyone know if LTSpice / PSpice / HSpice encryption >> >has been cracked? anyone working on it?), impossible to verify. >> > >> >There's also the possibility that fewer lines contain more math, resulting >> >in worse execution time or convergence anyway. >> > >> >But really, I'm guessing it's your tanh fit stuff, which you've posted >> >about publicly before. You also claim it's based on publically published >> >curves. So hiding it is all the more absurd... >> > >> >Tim >> >> New technique. It definitely works. Try it or not, I don't care. It >> was originally posted to the LTspice List where the question was >> broached initially. >> >> Those with interest in circuit work should subscribe to the LTspice >> List... you'll learn some new techniques... and not be annoyed by >> cockroach invasions into technical threads. >> > >apart from LTspice's encryption algorithm, how is there going >to be much technical discussing about a binary blob? > >-LasseYeah, I was wondering what we could learn from an encrypted MOV model. -- John Larkin Highland Technology, Inc picosecond timing precision measurement jlarkin att highlandtechnology dott com http://www.highlandtechnology.com
Reply by ●May 11, 20152015-05-11
On 5/11/2015 4:23 PM, Jim Thompson wrote:> On Mon, 11 May 2015 10:34:26 -0700, John Larkin > <jlarkin@highlandtechnology.com> wrote: > >> On Sun, 10 May 2015 08:46:07 -0700, Jim Thompson >> <To-Email-Use-The-Envelope-Icon@On-My-Web-Site.com> wrote: >> >>> Varistor/MOV Spice Modeling has been updated. >>> >>> See VaristorMOV.zip on the Device Models & Subcircuits Page of >>> my website. ...Jim Thompson >> >> Encrypted! > > To conceal my techniques.Seems pretty pointless at your age, Jim. Are you ever going to pass on all those pearls of wisdom, or are you going to take them to the grave like King Tut? Soon would be good, if you're ever going to. Cheers Phil Hobbs -- Dr Philip C D Hobbs Principal Consultant ElectroOptical Innovations LLC Optics, Electro-optics, Photonics, Analog Electronics 160 North State Road #203 Briarcliff Manor NY 10510 hobbs at electrooptical dot net http://electrooptical.net
Reply by ●May 11, 20152015-05-11
On Mon, 11 May 2015 17:18:25 -0700 (PDT), Lasse Langwadt Christensen <langwadt@fonz.dk> wrote: [snip]> >apart from LTspice's encryption algorithm, how is there going >to be much technical discussing about a binary blob? > >-LasseThe OP request on the LTspice List was for a model that worked. The OP was having convergence issues with the "official" Littelfuse model. So I posted a working model to the List and posted it here thinking there might be an interest _in_the_model_. It is not my duty to teach modeling... I am making models commercially right now and may possibly share my methods in the future... why should I give away all my art right now? ...Jim Thompson -- | James E.Thompson | mens | | Analog Innovations | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | San Tan Valley, 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 love to cook with wine. Sometimes I even put it in the food.
Reply by ●May 11, 20152015-05-11
On Mon, 11 May 2015 20:58:40 -0400, Phil Hobbs <pcdhSpamMeSenseless@electrooptical.net> wrote:>On 5/11/2015 4:23 PM, Jim Thompson wrote: >> On Mon, 11 May 2015 10:34:26 -0700, John Larkin >> <jlarkin@highlandtechnology.com> wrote: >> >>> On Sun, 10 May 2015 08:46:07 -0700, Jim Thompson >>> <To-Email-Use-The-Envelope-Icon@On-My-Web-Site.com> wrote: >>> >>>> Varistor/MOV Spice Modeling has been updated. >>>> >>>> See VaristorMOV.zip on the Device Models & Subcircuits Page of >>>> my website. ...Jim Thompson >>> >>> Encrypted! >> >> To conceal my techniques. > >Seems pretty pointless at your age, Jim. Are you ever going to pass on >all those pearls of wisdom, or are you going to take them to the grave >like King Tut? > >Soon would be good, if you're ever going to. > >Cheers > >Phil HobbsRight now I'm making money at it. Why should I give away the store? Does Larkin post a _complete_ schematic of his instruments and manufacturing techniques here? ...Jim Thompson -- | James E.Thompson | mens | | Analog Innovations | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | San Tan Valley, 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 love to cook with wine. Sometimes I even put it in the food.
Reply by ●May 11, 20152015-05-11
On 5/11/2015 9:04 PM, Jim Thompson wrote:> On Mon, 11 May 2015 20:58:40 -0400, Phil Hobbs > <pcdhSpamMeSenseless@electrooptical.net> wrote: > >> On 5/11/2015 4:23 PM, Jim Thompson wrote: >>> On Mon, 11 May 2015 10:34:26 -0700, John Larkin >>> <jlarkin@highlandtechnology.com> wrote: >>> >>>> On Sun, 10 May 2015 08:46:07 -0700, Jim Thompson >>>> <To-Email-Use-The-Envelope-Icon@On-My-Web-Site.com> wrote: >>>> >>>>> Varistor/MOV Spice Modeling has been updated. >>>>> >>>>> See VaristorMOV.zip on the Device Models & Subcircuits Page of >>>>> my website. ...Jim Thompson >>>> >>>> Encrypted! >>> >>> To conceal my techniques. >> >> Seems pretty pointless at your age, Jim. Are you ever going to pass on >> all those pearls of wisdom, or are you going to take them to the grave >> like King Tut? >> >> Soon would be good, if you're ever going to. > > Right now I'm making money at it. Why should I give away the store? > Does Larkin post a _complete_ schematic of his instruments and > manufacturing techniques here?Because you're in your mid 70s. I know your dad lived into his early 90s, and was pretty sharp till the end, but there's no guarantee that you'll do the same. What do you want your legacy to be? It's pretty late not to be thinking about that, especially given the amount of time and energy it will take to pass on the best of what you know in a form accessible to young people. John L.'s company will probably be manufacturing stuff long after he's retired, and he isn't the sole designer, so that isn't the same case at all. Also you vastly overestimate the opportunity cost of publishing stuff--it's usually a net win. My book gives away the majority of what I know about what I do, and besides helping a lot of young folks (which was the point of the exercise), it has been the foundation of my consulting practice. The first edition was published when I was 40. Cheers Phil Hobbs -- Dr Philip C D Hobbs Principal Consultant ElectroOptical Innovations LLC Optics, Electro-optics, Photonics, Analog Electronics 160 North State Road #203 Briarcliff Manor NY 10510 hobbs at electrooptical dot net http://electrooptical.net
Reply by ●May 11, 20152015-05-11
On Mon, 11 May 2015 18:04:05 -0700, Jim Thompson <To-Email-Use-The-Envelope-Icon@On-My-Web-Site.com> wrote:>On Mon, 11 May 2015 20:58:40 -0400, Phil Hobbs ><pcdhSpamMeSenseless@electrooptical.net> wrote: > >>On 5/11/2015 4:23 PM, Jim Thompson wrote: >>> On Mon, 11 May 2015 10:34:26 -0700, John Larkin >>> <jlarkin@highlandtechnology.com> wrote: >>> >>>> On Sun, 10 May 2015 08:46:07 -0700, Jim Thompson >>>> <To-Email-Use-The-Envelope-Icon@On-My-Web-Site.com> wrote: >>>> >>>>> Varistor/MOV Spice Modeling has been updated. >>>>> >>>>> See VaristorMOV.zip on the Device Models & Subcircuits Page of >>>>> my website. ...Jim Thompson >>>> >>>> Encrypted! >>> >>> To conceal my techniques. >> >>Seems pretty pointless at your age, Jim. Are you ever going to pass on >>all those pearls of wisdom, or are you going to take them to the grave >>like King Tut? >> >>Soon would be good, if you're ever going to. >> >>Cheers >> >>Phil Hobbs > >Right now I'm making money at it. Why should I give away the store?An MOV model is "the store"? That's sort of sad.>Does Larkin post a _complete_ schematic of his instruments and >manufacturing techniques here? > > ...Jim ThompsonSometimes I post actual product schematics, usually sheets relevant to the topic, and photos of real boxes and boards. Sometimes I post (non-encrypted!) Spice files. Sometimes I post ideas and scribbles that I just imagined. I don't post manufacturing techniques, because my production people do that, and it's fairly standard stuff. I have posted a lot of breadboarding techniques, stuff that I do myself. I don't post encrypted Spice circuits and then tell people that I'm smart, just because I say so. I still don't know why your thing would be any better than a couple of zeners and resistors, and you won't say why. -- John Larkin Highland Technology, Inc picosecond timing laser drivers and controllers jlarkin att highlandtechnology dott com http://www.highlandtechnology.com
Reply by ●May 11, 20152015-05-11
On Mon, 11 May 2015 21:17:42 -0400, Phil Hobbs <hobbs@electrooptical.net> wrote:>On 5/11/2015 9:04 PM, Jim Thompson wrote: >> On Mon, 11 May 2015 20:58:40 -0400, Phil Hobbs >> <pcdhSpamMeSenseless@electrooptical.net> wrote: >> >>> On 5/11/2015 4:23 PM, Jim Thompson wrote: >>>> On Mon, 11 May 2015 10:34:26 -0700, John Larkin >>>> <jlarkin@highlandtechnology.com> wrote: >>>> >>>>> On Sun, 10 May 2015 08:46:07 -0700, Jim Thompson >>>>> <To-Email-Use-The-Envelope-Icon@On-My-Web-Site.com> wrote: >>>>> >>>>>> Varistor/MOV Spice Modeling has been updated. >>>>>> >>>>>> See VaristorMOV.zip on the Device Models & Subcircuits Page of >>>>>> my website. ...Jim Thompson >>>>> >>>>> Encrypted! >>>> >>>> To conceal my techniques. >>> >>> Seems pretty pointless at your age, Jim. Are you ever going to pass on >>> all those pearls of wisdom, or are you going to take them to the grave >>> like King Tut? >>> >>> Soon would be good, if you're ever going to. >> >> Right now I'm making money at it. Why should I give away the store? >> Does Larkin post a _complete_ schematic of his instruments and >> manufacturing techniques here? > >Because you're in your mid 70s. I know your dad lived into his early >90s, and was pretty sharp till the end, but there's no guarantee that >you'll do the same. What do you want your legacy to be? It's pretty >late not to be thinking about that, especially given the amount of time >and energy it will take to pass on the best of what you know in a form >accessible to young people. > >John L.'s company will probably be manufacturing stuff long after he's >retired, and he isn't the sole designer, so that isn't the same case at all. > >Also you vastly overestimate the opportunity cost of publishing >stuff--it's usually a net win. > >My book gives away the majority of what I know about what I do, and >besides helping a lot of young folks (which was the point of the >exercise), it has been the foundation of my consulting practice. The >first edition was published when I was 40. > >Cheers > >Phil HobbsOK. I'll divulge all my "secrets": (1) All derivatives must exist and be continuous (2) All functions must be BOUNDED smoothly, per (1) above. That's all there is to it other than knowing circuit design at the device level which you can pick up easily with 50 or so years or experience >:-} Seriously. More seriously, leukemia testing begins tomorrow. I'll consider your advice... maybe it is time to do a load dump. ...Jim Thompson -- | James E.Thompson | mens | | Analog Innovations | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | San Tan Valley, 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 love to cook with wine. Sometimes I even put it in the food.
Reply by ●May 11, 20152015-05-11
On 5/11/2015 9:51 PM, Jim Thompson wrote:> On Mon, 11 May 2015 21:17:42 -0400, Phil Hobbs > <hobbs@electrooptical.net> wrote: > >> On 5/11/2015 9:04 PM, Jim Thompson wrote: >>> On Mon, 11 May 2015 20:58:40 -0400, Phil Hobbs >>> <pcdhSpamMeSenseless@electrooptical.net> wrote: >>> >>>> On 5/11/2015 4:23 PM, Jim Thompson wrote: >>>>> On Mon, 11 May 2015 10:34:26 -0700, John Larkin >>>>> <jlarkin@highlandtechnology.com> wrote: >>>>> >>>>>> On Sun, 10 May 2015 08:46:07 -0700, Jim Thompson >>>>>> <To-Email-Use-The-Envelope-Icon@On-My-Web-Site.com> wrote: >>>>>> >>>>>>> Varistor/MOV Spice Modeling has been updated. >>>>>>> >>>>>>> See VaristorMOV.zip on the Device Models & Subcircuits Page of >>>>>>> my website. ...Jim Thompson >>>>>> >>>>>> Encrypted! >>>>> >>>>> To conceal my techniques. >>>> >>>> Seems pretty pointless at your age, Jim. Are you ever going to pass on >>>> all those pearls of wisdom, or are you going to take them to the grave >>>> like King Tut? >>>> >>>> Soon would be good, if you're ever going to. >>> >>> Right now I'm making money at it. Why should I give away the store? >>> Does Larkin post a _complete_ schematic of his instruments and >>> manufacturing techniques here? >> >> Because you're in your mid 70s. I know your dad lived into his early >> 90s, and was pretty sharp till the end, but there's no guarantee that >> you'll do the same. What do you want your legacy to be? It's pretty >> late not to be thinking about that, especially given the amount of time >> and energy it will take to pass on the best of what you know in a form >> accessible to young people. >> >> John L.'s company will probably be manufacturing stuff long after he's >> retired, and he isn't the sole designer, so that isn't the same case at all. >> >> Also you vastly overestimate the opportunity cost of publishing >> stuff--it's usually a net win. >> >> My book gives away the majority of what I know about what I do, and >> besides helping a lot of young folks (which was the point of the >> exercise), it has been the foundation of my consulting practice. The >> first edition was published when I was 40. >> >> Cheers >> >> Phil Hobbs > > OK. I'll divulge all my "secrets": > > (1) All derivatives must exist and be continuous > (2) All functions must be BOUNDED smoothly, per (1) above. > > That's all there is to it other than knowing circuit design at the > device level which you can pick up easily with 50 or so years or > experience >:-} > > Seriously. > > More seriously, leukemia testing begins tomorrow. > > I'll consider your advice... maybe it is time to do a load dump. > > ...Jim Thompson >I'm praying for good test results for you. Cheers Phil Hobbs -- Dr Philip C D Hobbs Principal Consultant ElectroOptical Innovations LLC Optics, Electro-optics, Photonics, Analog Electronics 160 North State Road #203 Briarcliff Manor NY 10510 hobbs at electrooptical dot net http://electrooptical.net
