Electronics-Related.com
Forums

Update: Varistor/MOV Spice Modeling

Started by Jim Thompson May 10, 2015
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.
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! 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
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.
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
"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
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. > >Tim
That'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.
"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
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. ...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.
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
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? 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.