On Tue, 12 May 2015 10:43:57 -0700, John Larkin <jlarkin@highlandtechnology.com> wrote:>On Tue, 12 May 2015 09:59:26 -0700, Jim Thompson ><To-Email-Use-The-Envelope-Icon@On-My-Web-Site.com> wrote: > >>On Tue, 12 May 2015 09:51:10 -0700, John Larkin >><jlarkin@highlandtechnology.com> wrote: >> >>[snip] >>> >>>There's not a lot of demand for an accurate MOV model, especially an >>>encrypted one. >>> >>[snip] >> >>There was a request on the LTspice List and I provided a model. >> >>Why do you have heartburn over "encrypted"? >> > >You keep telling us how smart you are, and how dumb we are,Huh? Where did I say that?>and all we >need to do is take your word for it. > >Why are you keeping it a secret? Paranoia or insecurity?Why do you insist on being a psychopathic 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.
Update: Varistor/MOV Spice Modeling
Started by ●May 10, 2015
Reply by ●May 12, 20152015-05-12
Reply by ●May 12, 20152015-05-12
On Tue, 12 May 2015 12:19:15 -0700, Jim Thompson <To-Email-Use-The-Envelope-Icon@On-My-Web-Site.com> wrote: [snip]> >Why do you insist on being a psychopathic asshole? > > ...Jim ThompsonOooops! I already know the answer... because you ARE >:-} ...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 12, 20152015-05-12
On Tue, 12 May 2015 12:19:15 -0700, Jim Thompson <To-Email-Use-The-Envelope-Icon@On-My-Web-Site.com> wrote:>On Tue, 12 May 2015 10:43:57 -0700, John Larkin ><jlarkin@highlandtechnology.com> wrote: > >>On Tue, 12 May 2015 09:59:26 -0700, Jim Thompson >><To-Email-Use-The-Envelope-Icon@On-My-Web-Site.com> wrote: >> >>>On Tue, 12 May 2015 09:51:10 -0700, John Larkin >>><jlarkin@highlandtechnology.com> wrote: >>> >>>[snip] >>>> >>>>There's not a lot of demand for an accurate MOV model, especially an >>>>encrypted one. >>>> >>>[snip] >>> >>>There was a request on the LTspice List and I provided a model. >>> >>>Why do you have heartburn over "encrypted"? >>> >> >>You keep telling us how smart you are, and how dumb we are, > >Huh? Where did I say that? > >>and all we >>need to do is take your word for it. >> >>Why are you keeping it a secret? Paranoia or insecurity? > >Why do you insist on being a psychopathic asshole? > > ...Jim ThompsonOK, insecurity. If people saw what you did, they might criticize. Or have a better idea. Better keep it a secret. -- John Larkin Highland Technology, Inc picosecond timing precision measurement jlarkin att highlandtechnology dott com http://www.highlandtechnology.com
Reply by ●May 12, 20152015-05-12
On Tue, 12 May 2015 13:03:16 GMT, Ralph Barone <address_is@invalid.invalid> wrote:>"Tim Williams" <tiwill@seventransistorlabs.com> wrote: >> "Phil Hobbs" <pcdhSpamMeSenseless@electrooptical.net> wrote in message >> news:55515040.8030806@electrooptical.net... >>> 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? >> >> On a related note then, if anyone has something they'd like to model, I >> could take a crack at it. >> >> I suspect Jim isn't doing anything I don't know, and if he sees some >> examples, maybe he'd even admit what it is, too ;-) >> >> Tim > >Perhaps not the right place in the thread to say this, but what problems >would come up if you modelled a varistor as a behavioural current source >with I = k* V^alpha in series with a bulk resistance? I've had pretty good >luck with that model (just not in SPICE).The LT Spice "g" componant is a voltage dependant current source. The relationship could be your equation, or a polynomial, or anything. That would be *one* line of text. Add capacitance or ESL as needed. -- John Larkin Highland Technology, Inc picosecond timing precision measurement jlarkin att highlandtechnology dott com http://www.highlandtechnology.com
Reply by ●May 12, 20152015-05-12
On Tue, 12 May 2015 12:42:18 -0700, John Larkin <jlarkin@highlandtechnology.com> wrote:>On Tue, 12 May 2015 12:19:15 -0700, Jim Thompson ><To-Email-Use-The-Envelope-Icon@On-My-Web-Site.com> wrote: > >>On Tue, 12 May 2015 10:43:57 -0700, John Larkin >><jlarkin@highlandtechnology.com> wrote: >> >>>On Tue, 12 May 2015 09:59:26 -0700, Jim Thompson >>><To-Email-Use-The-Envelope-Icon@On-My-Web-Site.com> wrote: >>> >>>>On Tue, 12 May 2015 09:51:10 -0700, John Larkin >>>><jlarkin@highlandtechnology.com> wrote: >>>> >>>>[snip] >>>>> >>>>>There's not a lot of demand for an accurate MOV model, especially an >>>>>encrypted one. >>>>> >>>>[snip] >>>> >>>>There was a request on the LTspice List and I provided a model. >>>> >>>>Why do you have heartburn over "encrypted"? >>>> >>> >>>You keep telling us how smart you are, and how dumb we are, >> >>Huh? Where did I say that? >> >>>and all we >>>need to do is take your word for it. >>> >>>Why are you keeping it a secret? Paranoia or insecurity? >> >>Why do you insist on being a psychopathic asshole? >> >> ...Jim Thompson > >OK, insecurity. If people saw what you did, they might criticize. Or >have a better idea. > >Better keep it a secret.Are you really so ignorant to believe that? I guess that's the way psychopathic assholes think. ...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 12, 20152015-05-12
On Tue, 12 May 2015 12:55:37 -0700, John Larkin <jlarkin@highlandtechnology.com> wrote:>On Tue, 12 May 2015 13:03:16 GMT, Ralph Barone ><address_is@invalid.invalid> wrote: > >>"Tim Williams" <tiwill@seventransistorlabs.com> wrote: >>> "Phil Hobbs" <pcdhSpamMeSenseless@electrooptical.net> wrote in message >>> news:55515040.8030806@electrooptical.net... >>>> 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? >>> >>> On a related note then, if anyone has something they'd like to model, I >>> could take a crack at it. >>> >>> I suspect Jim isn't doing anything I don't know, and if he sees some >>> examples, maybe he'd even admit what it is, too ;-) >>> >>> Tim >> >>Perhaps not the right place in the thread to say this, but what problems >>would come up if you modelled a varistor as a behavioural current source >>with I = k* V^alpha in series with a bulk resistance? I've had pretty good >>luck with that model (just not in SPICE). > >The LT Spice "g" componant is a voltage dependant current source. The >relationship could be your equation, or a polynomial, or anything. >That would be *one* line of text. Add capacitance or ESL as needed.Yep. The MOV equation is one line of GVALUE... with coefficients set by VTEST, ITEST, VCLAMP, ICLAMP, Rseries, Lseries and Cpar, right from the data sheet. But apparently too difficult for Larkin the psychopathic asshole to master plugging in the numbers. ...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 12, 20152015-05-12
On Tue, 12 May 2015 13:03:03 -0700, Jim Thompson <To-Email-Use-The-Envelope-Icon@On-My-Web-Site.com> wrote:>On Tue, 12 May 2015 12:55:37 -0700, John Larkin ><jlarkin@highlandtechnology.com> wrote: > >>On Tue, 12 May 2015 13:03:16 GMT, Ralph Barone >><address_is@invalid.invalid> wrote: >> >>>"Tim Williams" <tiwill@seventransistorlabs.com> wrote: >>>> "Phil Hobbs" <pcdhSpamMeSenseless@electrooptical.net> wrote in message >>>> news:55515040.8030806@electrooptical.net... >>>>> 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? >>>> >>>> On a related note then, if anyone has something they'd like to model, I >>>> could take a crack at it. >>>> >>>> I suspect Jim isn't doing anything I don't know, and if he sees some >>>> examples, maybe he'd even admit what it is, too ;-) >>>> >>>> Tim >>> >>>Perhaps not the right place in the thread to say this, but what problems >>>would come up if you modelled a varistor as a behavioural current source >>>with I = k* V^alpha in series with a bulk resistance? I've had pretty good >>>luck with that model (just not in SPICE). >> >>The LT Spice "g" componant is a voltage dependant current source. The >>relationship could be your equation, or a polynomial, or anything. >>That would be *one* line of text. Add capacitance or ESL as needed. > >Yep. The MOV equation is one line of GVALUE... with coefficients set >by VTEST, ITEST, VCLAMP, ICLAMP, Rseries, Lseries and Cpar, right from >the data sheet.One line? What line? This one maybe? 1e0b22458c9e013c316e1a17d2fb21f94017955ce88f51ef5c03aab498e88eb5e71f71e1875841719b8947fe3d6f920cb7af1fedfab169c9c17d1a3c4a3fa116 -- John Larkin Highland Technology, Inc picosecond timing precision measurement jlarkin att highlandtechnology dott com http://www.highlandtechnology.com
Reply by ●May 12, 20152015-05-12
On Tue, 12 May 2015 13:40:48 -0700, John Larkin <jlarkin@highlandtechnology.com> wrote:>On Tue, 12 May 2015 13:03:03 -0700, Jim Thompson ><To-Email-Use-The-Envelope-Icon@On-My-Web-Site.com> wrote: > >>On Tue, 12 May 2015 12:55:37 -0700, John Larkin >><jlarkin@highlandtechnology.com> wrote: >> >>>On Tue, 12 May 2015 13:03:16 GMT, Ralph Barone >>><address_is@invalid.invalid> wrote: >>> >>>>"Tim Williams" <tiwill@seventransistorlabs.com> wrote: >>>>> "Phil Hobbs" <pcdhSpamMeSenseless@electrooptical.net> wrote in message >>>>> news:55515040.8030806@electrooptical.net... >>>>>> 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? >>>>> >>>>> On a related note then, if anyone has something they'd like to model, I >>>>> could take a crack at it. >>>>> >>>>> I suspect Jim isn't doing anything I don't know, and if he sees some >>>>> examples, maybe he'd even admit what it is, too ;-) >>>>> >>>>> Tim >>>> >>>>Perhaps not the right place in the thread to say this, but what problems >>>>would come up if you modelled a varistor as a behavioural current source >>>>with I = k* V^alpha in series with a bulk resistance? I've had pretty good >>>>luck with that model (just not in SPICE). >>> >>>The LT Spice "g" componant is a voltage dependant current source. The >>>relationship could be your equation, or a polynomial, or anything. >>>That would be *one* line of text. Add capacitance or ESL as needed. >> >>Yep. The MOV equation is one line of GVALUE... with coefficients set >>by VTEST, ITEST, VCLAMP, ICLAMP, Rseries, Lseries and Cpar, right from >>the data sheet. > >One line? What line? This one maybe? > >1e0b22458c9e013c316e1a17d2fb21f94017955ce88f51ef5c03aab498e88eb5e71f71e1875841719b8947fe3d6f920cb7af1fedfab169c9c17d1a3c4a3fa116You will NEVER see the equation, as simple as it is, NEVER >:-} ...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 12, 20152015-05-12
On Tue, 12 May 2015 13:44:46 -0700, Jim Thompson <To-Email-Use-The-Envelope-Icon@On-My-Web-Site.com> wrote:>On Tue, 12 May 2015 13:40:48 -0700, John Larkin ><jlarkin@highlandtechnology.com> wrote: > >>On Tue, 12 May 2015 13:03:03 -0700, Jim Thompson >><To-Email-Use-The-Envelope-Icon@On-My-Web-Site.com> wrote: >> >>>On Tue, 12 May 2015 12:55:37 -0700, John Larkin >>><jlarkin@highlandtechnology.com> wrote: >>> >>>>On Tue, 12 May 2015 13:03:16 GMT, Ralph Barone >>>><address_is@invalid.invalid> wrote: >>>> >>>>>"Tim Williams" <tiwill@seventransistorlabs.com> wrote: >>>>>> "Phil Hobbs" <pcdhSpamMeSenseless@electrooptical.net> wrote in message >>>>>> news:55515040.8030806@electrooptical.net... >>>>>>> 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? >>>>>> >>>>>> On a related note then, if anyone has something they'd like to model, I >>>>>> could take a crack at it. >>>>>> >>>>>> I suspect Jim isn't doing anything I don't know, and if he sees some >>>>>> examples, maybe he'd even admit what it is, too ;-) >>>>>> >>>>>> Tim >>>>> >>>>>Perhaps not the right place in the thread to say this, but what problems >>>>>would come up if you modelled a varistor as a behavioural current source >>>>>with I = k* V^alpha in series with a bulk resistance? I've had pretty good >>>>>luck with that model (just not in SPICE). >>>> >>>>The LT Spice "g" componant is a voltage dependant current source. The >>>>relationship could be your equation, or a polynomial, or anything. >>>>That would be *one* line of text. Add capacitance or ESL as needed. >>> >>>Yep. The MOV equation is one line of GVALUE... with coefficients set >>>by VTEST, ITEST, VCLAMP, ICLAMP, Rseries, Lseries and Cpar, right from >>>the data sheet. >> >>One line? What line? This one maybe? >> >>1e0b22458c9e013c316e1a17d2fb21f94017955ce88f51ef5c03aab498e88eb5e71f71e1875841719b8947fe3d6f920cb7af1fedfab169c9c17d1a3c4a3fa116 > >You will NEVER see the equation, as simple as it is, NEVER >:-} > > ...Jim ThompsonOh no, no, I'm heartbroken. -- John Larkin Highland Technology, Inc picosecond timing precision measurement jlarkin att highlandtechnology dott com http://www.highlandtechnology.com
Reply by ●May 12, 20152015-05-12
On Tue, 12 May 2015 14:09:16 -0700, John Larkin <jlarkin@highlandtechnology.com> wrote:>On Tue, 12 May 2015 13:44:46 -0700, Jim Thompson ><To-Email-Use-The-Envelope-Icon@On-My-Web-Site.com> wrote: > >>On Tue, 12 May 2015 13:40:48 -0700, John Larkin >><jlarkin@highlandtechnology.com> wrote: >> >>>On Tue, 12 May 2015 13:03:03 -0700, Jim Thompson >>><To-Email-Use-The-Envelope-Icon@On-My-Web-Site.com> wrote: >>> >>>>On Tue, 12 May 2015 12:55:37 -0700, John Larkin >>>><jlarkin@highlandtechnology.com> wrote: >>>> >>>>>On Tue, 12 May 2015 13:03:16 GMT, Ralph Barone >>>>><address_is@invalid.invalid> wrote: >>>>> >>>>>>"Tim Williams" <tiwill@seventransistorlabs.com> wrote: >>>>>>> "Phil Hobbs" <pcdhSpamMeSenseless@electrooptical.net> wrote in message >>>>>>> news:55515040.8030806@electrooptical.net... >>>>>>>> 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? >>>>>>> >>>>>>> On a related note then, if anyone has something they'd like to model, I >>>>>>> could take a crack at it. >>>>>>> >>>>>>> I suspect Jim isn't doing anything I don't know, and if he sees some >>>>>>> examples, maybe he'd even admit what it is, too ;-) >>>>>>> >>>>>>> Tim >>>>>> >>>>>>Perhaps not the right place in the thread to say this, but what problems >>>>>>would come up if you modelled a varistor as a behavioural current source >>>>>>with I = k* V^alpha in series with a bulk resistance? I've had pretty good >>>>>>luck with that model (just not in SPICE). >>>>> >>>>>The LT Spice "g" componant is a voltage dependant current source. The >>>>>relationship could be your equation, or a polynomial, or anything. >>>>>That would be *one* line of text. Add capacitance or ESL as needed. >>>> >>>>Yep. The MOV equation is one line of GVALUE... with coefficients set >>>>by VTEST, ITEST, VCLAMP, ICLAMP, Rseries, Lseries and Cpar, right from >>>>the data sheet. >>> >>>One line? What line? This one maybe? >>> >>>1e0b22458c9e013c316e1a17d2fb21f94017955ce88f51ef5c03aab498e88eb5e71f71e1875841719b8947fe3d6f920cb7af1fedfab169c9c17d1a3c4a3fa116 >> >>You will NEVER see the equation, as simple as it is, NEVER >:-} >> >> ...Jim Thompson > >Oh no, no, I'm heartbroken.Good >:-} ...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.
