Re: gEDA-user: Question regarding 1st LTSpice simulation

2007-09-18 Thread John Griessen
Andy Peters wrote: > On Sep 18, 2007, at 12:07 PM, al davis wrote: > >> So, for LT-spice >> >> What is the "organic matter" being added to the soil? >> What are the "beneficial insects?" >> >> And finally: >> What are the "weeds" they want to choke out? > > These are interesting questions.

Re: gEDA-user: Mathematical expressions in gnucap?

2007-09-18 Thread Peter Clifton
On Tue, 2007-09-18 at 19:48 -0400, al davis wrote: > On Tuesday 18 September 2007, John Doty wrote: > > If you have Mathematica > > Have you tried "Mathomatic"? > > It's a free (GPL) symbolic math program. I don't know how it > compares to Mathematica, which is a commercial product. There is

Re: gEDA-user: Mathematical expressions in gnucap?

2007-09-18 Thread al davis
On Tuesday 18 September 2007, John Doty wrote: > If you have Mathematica Have you tried "Mathomatic"? It's a free (GPL) symbolic math program. I don't know how it compares to Mathematica, which is a commercial product. ___ geda-user mailing list ge

Re: gEDA-user: Mathematical expressions in gnucap?

2007-09-18 Thread Peter Clifton
On Tue, 2007-09-18 at 16:50 -0600, John Doty wrote: > On Sep 18, 2007, at 3:59 PM, Peter Clifton wrote: > > > > > The model is to simulate EMF induced in a generator given arbitrary > > mechanical input. > > > > I'm defining the mechanical position input to be a voltage across two > > terminals (

Re: gEDA-user: Mathematical expressions in gnucap?

2007-09-18 Thread John Doty
On Sep 18, 2007, at 3:59 PM, Peter Clifton wrote: > > The model is to simulate EMF induced in a generator given arbitrary > mechanical input. > > I'm defining the mechanical position input to be a voltage across two > terminals (say 1m / V), which I will differentiate to get velocity > (say > 1

Re: gEDA-user: Mathematical expressions in gnucap?

2007-09-18 Thread Peter Clifton
> There is nothing as easy as the "B" device. Options available > are 1. define as a poly, 2. use a table, 3. code a bm_ plugin > in C++ (This really is easy. Tell me what you want and I will > show you.) 4. A more elaborate behavioral model as a .model > file, which becomes a plug-in. The

Re: gEDA-user: Question regarding 1st LTSpice simulation

2007-09-18 Thread Andy Peters
On Sep 18, 2007, at 12:07 PM, al davis wrote: > So, for LT-spice > > What is the "organic matter" being added to the soil? > What are the "beneficial insects?" > > And finally: > What are the "weeds" they want to choke out? These are interesting questions. The answer is that LTC's business

Re: gEDA-user: Mathematical expressions in gnucap?

2007-09-18 Thread al davis
On Tuesday 18 September 2007, Peter Clifton wrote: > Hi, > > I'm trying to use gnucap for simulating a machine - and am > attempting to produce an electrically analogous sub-circuit > circuit model to simulate the behaviour of a generator. > > I can get position and velocity (position is input from

Re: gEDA-user: Question regarding 1st LTSpice simulation

2007-09-18 Thread al davis
On Tuesday 18 September 2007, Andy Peters wrote: > They are in a binary format.  The program is smart enough to > know   which models are spice models and which are the > proprietary binary models.  The format is not published so > far all calls to open it have been ignored. > > There's also some l

Re: gEDA-user: Question regarding 1st LTSpice simulation

2007-09-18 Thread Andy Peters
On Sep 18, 2007, at 11:40 AM, John Griessen wrote: > Andy Peters wrote: > >> One obvious caveat is that the LTC switcher models are all >> proprietary and as such can't be used with any other spice. > Are they hidden or licensed, or just a format that could be > translated? They are in a binar

Re: gEDA-user: Question regarding 1st LTSpice simulation

2007-09-18 Thread John Griessen
Andy Peters wrote: > One obvious caveat is that the LTC switcher models are all > proprietary and as such can't be used with any other spice. Are they hidden or licensed, or just a format that could be translated? John Griessen -- Ecosensory tinyOS devel on: ubuntu Linux; tinyOS v2.0.2;

Re: gEDA-user: Question regarding 1st LTSpice simulation

2007-09-18 Thread Andy Peters
On Sep 17, 2007, at 4:23 PM, gene wrote: > Honestly, I haven't even tried either gnucap nor ng-spice but use > ltswitchercad quite a bit. I'm up for the change, but how's the > learning curve? Anyone care to comment or compare the two? One obvious caveat is that the LTC switcher models are all

gEDA-user: Mathematical expressions in gnucap?

2007-09-18 Thread Peter Clifton
Hi, I'm trying to use gnucap for simulating a machine - and am attempting to produce an electrically analogous sub-circuit circuit model to simulate the behaviour of a generator. I can get position and velocity (position is input from a sinusoidal source), and this is differentiated with a capaci

Re: gEDA-user: pcb-20070912

2007-09-18 Thread Chitlesh GOORAH
On 9/14/07, Peter Clifton wrote: > Out of interest, what distribution are you using this with - the only > distro where I've seen mixed 32 / 64 bit binaries is OpenSUSE (because > the servers at Engineering are mostly 64 bit machines running OpenSUSE > 10.2). Fedora does have multilibs support as