Varistor/MOV Spice Modeling has been updated.
See VaristorMOV.zip on the Device Models & Subcircuits Page of my
website.
...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
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 ThompsonEncrypted! Not very general. Given how imprecise MOVs are, seems like a couple of zeners and resistors, and maybe a capacitor, would be plenty good enough. MOVs "wear out", too. Did you include that? -- 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 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. Did you read... 8 lines versus 34 ??>Not very general.Parameterizable to any MOV... read!> >Given how imprecise MOVs are, seems like a couple of zeners and >resistors, and maybe a capacitor, would be plenty good enough. >Good enough for you, perhaps >:-}>MOVs "wear out", too. Did you include that?Typical Larkin sand-in-air... you can't help but be an asshole. ...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 13:23:52 -0700, Jim Thompson <To-Email-Use-The-Envelope-Icon@On-My-Web-Site.com> 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. Did you read... 8 lines versus 34 ?? > >>Not very general. > >Parameterizable to any MOV... read! > >> >>Given how imprecise MOVs are, seems like a couple of zeners and >>resistors, and maybe a capacitor, would be plenty good enough. >> > >Good enough for you, perhaps >:-}Good enough for anybody. MOVs are not precise parts.> >>MOVs "wear out", too. Did you include that? > >Typical Larkin sand-in-air... you can't help but be an asshole.Did I hurt your feelings by not admiring your encrypted MOV model? I really can't imagine why anyone needs to Spice a MOV. The things that matter (power dissipation, joule capacity, wearout) aren't in the 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 Monday, May 11, 2015 at 11:55:31 PM UTC+2, John Larkin wrote:> On Mon, 11 May 2015 13:23:52 -0700, Jim Thompson > <To-Email-Use-The-Envelope-Icon@On-My-Web-Site.com> 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. Did you read... 8 lines versus 34 ?? > > > >>Not very general. > > > >Parameterizable to any MOV... read! > > > >> > >>Given how imprecise MOVs are, seems like a couple of zeners and > >>resistors, and maybe a capacitor, would be plenty good enough. > >> > > > >Good enough for you, perhaps >:-} > > Good enough for anybody. MOVs are not precise parts. > > > > > >>MOVs "wear out", too. Did you include that? > > > >Typical Larkin sand-in-air... you can't help but be an asshole. > > Did I hurt your feelings by not admiring your encrypted MOV model? > > I really can't imagine why anyone needs to Spice a MOV. The things > that matter (power dissipation, joule capacity, wearout) aren't in the > model. >Well, you can check out what dV/dt the Y capacitors (or whatever) following the MOV is subjected to, and evaluated if the protection is sufficient Of course, the information is only as good as the model.... Cheers Klaus
Reply by ●May 11, 20152015-05-11
"Jim Thompson" <To-Email-Use-The-Envelope-Icon@On-My-Web-Site.com> wrote in message news:dp32lat5ilmiqir9k9jifbero3nlj2qvh2@4ax.com...> To conceal my techniques. Did you read... 8 lines versus 34 ??8 lines? Looks more like 20 to me. Tim -- Seven Transistor Labs, LLC Electrical Engineering Consultation and Contract Design Website: http://seventransistorlabs.com
Reply by ●May 11, 20152015-05-11
On Mon, 11 May 2015 15:00:08 -0700 (PDT), Klaus Kragelund <klauskvik@hotmail.com> wrote:>On Monday, May 11, 2015 at 11:55:31 PM UTC+2, John Larkin wrote: >> On Mon, 11 May 2015 13:23:52 -0700, Jim Thompson >> <To-Email-Use-The-Envelope-Icon@On-My-Web-Site.com> 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. Did you read... 8 lines versus 34 ?? >> > >> >>Not very general. >> > >> >Parameterizable to any MOV... read! >> > >> >> >> >>Given how imprecise MOVs are, seems like a couple of zeners and >> >>resistors, and maybe a capacitor, would be plenty good enough. >> >> >> > >> >Good enough for you, perhaps >:-} >> >> Good enough for anybody. MOVs are not precise parts. >> >> >> > >> >>MOVs "wear out", too. Did you include that? >> > >> >Typical Larkin sand-in-air... you can't help but be an asshole. >> >> Did I hurt your feelings by not admiring your encrypted MOV model? >> >> I really can't imagine why anyone needs to Spice a MOV. The things >> that matter (power dissipation, joule capacity, wearout) aren't in the >> model. >> >Well, you can check out what dV/dt the Y capacitors (or whatever) following the MOV is subjected to, and evaluated if the protection is sufficient > >Of course, the information is only as good as the model....The parameters in the model look a lot like a zener+series resistor+shunt capacitor, with a little inductance. I can't be sure, since it's encrypted. -- 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 Mon, 11 May 2015 15:17:27 -0700, John Larkin <jlarkin@highlandtechnology.com> wrote:>On Mon, 11 May 2015 15:00:08 -0700 (PDT), Klaus Kragelund ><klauskvik@hotmail.com> wrote: > >>On Monday, May 11, 2015 at 11:55:31 PM UTC+2, John Larkin wrote: >>> On Mon, 11 May 2015 13:23:52 -0700, Jim Thompson >>> <To-Email-Use-The-Envelope-Icon@On-My-Web-Site.com> 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. Did you read... 8 lines versus 34 ?? >>> > >>> >>Not very general. >>> > >>> >Parameterizable to any MOV... read! >>> > >>> >> >>> >>Given how imprecise MOVs are, seems like a couple of zeners and >>> >>resistors, and maybe a capacitor, would be plenty good enough. >>> >> >>> > >>> >Good enough for you, perhaps >:-} >>> >>> Good enough for anybody. MOVs are not precise parts. >>> >>> >>> > >>> >>MOVs "wear out", too. Did you include that? >>> > >>> >Typical Larkin sand-in-air... you can't help but be an asshole. >>> >>> Did I hurt your feelings by not admiring your encrypted MOV model? >>> >>> I really can't imagine why anyone needs to Spice a MOV. The things >>> that matter (power dissipation, joule capacity, wearout) aren't in the >>> model. >>> >>Well, you can check out what dV/dt the Y capacitors (or whatever) following the MOV is subjected to, and evaluated if the protection is sufficient >> >>Of course, the information is only as good as the model.... > >The parameters in the model look a lot like a zener+series >resistor+shunt capacitor, with a little inductance. I can't be sure, >since it's encrypted.>:-} The model is encrypted because it's NOT that... it's a fit to Littelfuse curves....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 17:12:03 -0500, "Tim Williams" <tiwill@seventransistorlabs.com> wrote:>"Jim Thompson" <To-Email-Use-The-Envelope-Icon@On-My-Web-Site.com> wrote >in message news:dp32lat5ilmiqir9k9jifbero3nlj2qvh2@4ax.com... >> To conceal my techniques. Did you read... 8 lines versus 34 ?? > >8 lines? Looks more like 20 to me. > >TimThat's LTspice's encryption scheme that adds all those extra characters. ...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
"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 -- Seven Transistor Labs, LLC Electrical Engineering Consultation and Contract Design Website: http://seventransistorlabs.com
