Forums

new spice

Started by John Larkin September 28, 2021
https://www.linkedin.com/in/mike-engelhardt-a788a822

-- 

If a man will begin with certainties, he shall end with doubts, 
but if he will be content to begin with doubts he shall end in certainties.
Francis Bacon
John Larkin wrote:
> https://www.linkedin.com/in/mike-engelhardt-a788a822 >
It'll be interesting to try out, if "Currently working on an appropriate business model for it" doesn't involve too much dough or intrusive license terms. I wonder if he's put in any support for building models? Cheers Phil Hobbs -- Dr Philip C D Hobbs Principal Consultant ElectroOptical Innovations LLC / Hobbs ElectroOptics Optics, Electro-optics, Photonics, Analog Electronics Briarcliff Manor NY 10510 http://electrooptical.net http://hobbs-eo.com
On Wednesday, September 29, 2021 at 11:35:50 AM UTC+10, Phil Hobbs wrote:
> John Larkin wrote: > > https://www.linkedin.com/in/mike-engelhardt-a788a822 > > > > It'll be interesting to try out, if > "Currently working on an appropriate business model for it" doesn't > involve too much dough or intrusive license terms. > > I wonder if he's put in any support for building models?
The various flavours of Spice all support a variety of models, which tend to be supplied by the people who make the devices. Manufacturer's Spice models tend to be less than wonderful. The late Jim Thompson made a business of being able to produce more useful models. Kevin Aylward might be another source. His SuperSpice worked fine for me. -- Bill Sloman, Sydney
On 29/09/21 08:02, Anthony William Sloman wrote:
> On Wednesday, September 29, 2021 at 11:35:50 AM UTC+10, Phil Hobbs wrote: >> John Larkin wrote: >>> https://www.linkedin.com/in/mike-engelhardt-a788a822 >>> >> >> It'll be interesting to try out, if >> "Currently working on an appropriate business model for it" doesn't >> involve too much dough or intrusive license terms. >> >> I wonder if he's put in any support for building models? > > The various flavours of Spice all support a variety of models, which tend to be supplied by the people who make the devices. > > Manufacturer's Spice models tend to be less than wonderful. The late Jim Thompson made a business of being able to produce more useful models. > > Kevin Aylward might be another source. His SuperSpice worked fine for me. >
Ever tried Micro-Cap? It is no longer maintained, but free as in beer.
On Wed, 29 Sep 2021 08:30:24 +0100, Tom Gardner
<spamjunk@blueyonder.co.uk> wrote:

>On 29/09/21 08:02, Anthony William Sloman wrote: >> On Wednesday, September 29, 2021 at 11:35:50 AM UTC+10, Phil Hobbs wrote: >>> John Larkin wrote: >>>> https://www.linkedin.com/in/mike-engelhardt-a788a822 >>>> >>> >>> It'll be interesting to try out, if >>> "Currently working on an appropriate business model for it" doesn't >>> involve too much dough or intrusive license terms. >>> >>> I wonder if he's put in any support for building models? >> >> The various flavours of Spice all support a variety of models, which tend to be supplied by the people who make the devices. >> >> Manufacturer's Spice models tend to be less than wonderful. The late Jim Thompson made a business of being able to produce more useful models. >> >> Kevin Aylward might be another source. His SuperSpice worked fine for me. >> > >Ever tried Micro-Cap? It is no longer maintained, but free as in beer.
I used Micro-Cap in the lat 1990s and then LT-spice. MicroCap worked well too. Of course, I downloaded it when it was offered for free recently. Supposedly, Mike's new version will try to design or parially design you circuit after giving it the curves. I would imagine it could, for instance, fill in the parts values for an active filter by drawing a response curve. I have seen DSP software do this for digital filters. boB
On Tuesday, September 28, 2021 at 8:22:33 PM UTC-4, John Larkin wrote:
> https://www.linkedin.com/in/mike-engelhardt-a788a822 > > -- > > If a man will begin with certainties, he shall end with doubts, > but if he will be content to begin with doubts he shall end in certainties. > Francis Bacon
Being free had more to do with its popularity than anything else.
Tom Gardner wrote:
> On 29/09/21 08:02, Anthony William Sloman wrote: >> On Wednesday, September 29, 2021 at 11:35:50 AM UTC+10, Phil Hobbs wrote: >>> John Larkin wrote: >>>> https://www.linkedin.com/in/mike-engelhardt-a788a822 >>>> >>> >>> It'll be interesting to try out, if >>> "Currently working on an appropriate business model for it" doesn't >>> involve too much dough or intrusive license terms. >>> >>> I wonder if he's put in any support for building models? >> >> The various flavours of Spice all support a variety of models, which >> tend to be supplied by the people who make the devices. >> >> Manufacturer's Spice models tend to be less than wonderful.&nbsp; The late >> Jim Thompson made a business of being able to produce more useful models. >> >> Kevin Aylward might be another source. His SuperSpice worked fine for me. >> > > Ever tried Micro-Cap? It is no longer maintained, but free as in beer.
I had a copy of Micro-Cap V back in the Win 98 days iirc. Worked okay. Maybe Micro-Cap would have better luck making some of TI's crappy op amp models converge. (I'm looking at you, OPA140!) Cheers Phil Hobbs -- Dr Philip C D Hobbs Principal Consultant ElectroOptical Innovations LLC / Hobbs ElectroOptics Optics, Electro-optics, Photonics, Analog Electronics Briarcliff Manor NY 10510 http://electrooptical.net http://hobbs-eo.com
On Wednesday, September 29, 2021 at 12:22:21 PM UTC-4, Phil Hobbs wrote:
> Tom Gardner wrote: > > On 29/09/21 08:02, Anthony William Sloman wrote: > >> On Wednesday, September 29, 2021 at 11:35:50 AM UTC+10, Phil Hobbs wrote: > >>> John Larkin wrote: > >>>> https://www.linkedin.com/in/mike-engelhardt-a788a822 > >>>> > >>> > >>> It'll be interesting to try out, if > >>> "Currently working on an appropriate business model for it" doesn't > >>> involve too much dough or intrusive license terms. > >>> > >>> I wonder if he's put in any support for building models? > >> > >> The various flavours of Spice all support a variety of models, which > >> tend to be supplied by the people who make the devices. > >> > >> Manufacturer's Spice models tend to be less than wonderful. The late > >> Jim Thompson made a business of being able to produce more useful models. > >> > >> Kevin Aylward might be another source. His SuperSpice worked fine for me. > >> > > > > Ever tried Micro-Cap? It is no longer maintained, but free as in beer. > I had a copy of Micro-Cap V back in the Win 98 days iirc. Worked okay. > > Maybe Micro-Cap would have better luck making some of TI's crappy op amp > models converge. (I'm looking at you, OPA140!)
TINA could have something to do with it.
> Cheers > > Phil Hobbs > > -- > Dr Philip C D Hobbs > Principal Consultant > ElectroOptical Innovations LLC / Hobbs ElectroOptics > Optics, Electro-optics, Photonics, Analog Electronics > Briarcliff Manor NY 10510 > > http://electrooptical.net > http://hobbs-eo.com
Am 29.09.21 um 18:17 schrieb Fred Bloggs:
> On Tuesday, September 28, 2021 at 8:22:33 PM UTC-4, John Larkin wrote: >> https://www.linkedin.com/in/mike-engelhardt-a788a822 >> >> -- >> >> If a man will begin with certainties, he shall end with doubts, >> but if he will be content to begin with doubts he shall end in certainties. >> Francis Bacon > > Being free had more to do with its popularity than anything else.
I could imagine some improvements: 1 Harmonic balance 2 nonlinear noise for example: noise of a chopper amplifier. it has no steady state requires (1) 3 easy S-parameters 4 built-in loop gain probes 5 multiple simulations without having to comment/uncomment .tran .ac .noise instructions. Some other proposals would require mechanical layout, that is probably asking too much. This is still a far cry from Keysight ADS, money & performancewise. But to make someone spend money for this at all, the advantages would have to be substantial. There are a lot of roadkills among the Spice workalikes. Gerhard
Am 29.09.21 um 18:15 schrieb boB:

> > I used Micro-Cap in the lat 1990s and then LT-spice. > > MicroCap worked well too. Of course, I downloaded it when it was > offered for free recently. > > Supposedly, Mike's new version will try to design or parially design > you circuit after giving it the curves. I would imagine it could, for > instance, fill in the parts values for an active filter by drawing a > response curve. I have seen DSP software do this for digital > filters.
Probably like the intelligent parts in ADS. You just draw a filter and in its control page you say what you want: passive LC, op amp, sampled, frequencies, stripline, microstrip in its diverse variants and it is completed up to the layout of your hairpin filter on, say, Rogers 4003, ready for EM simulation. Gerhard