Re: gEDA-user: NE 555 and simulation issue

[Dave McGuire <mcguire@xxxxxxxxxxxxx>]

On Mar 2, 2010, at 11:08 AM, W.H. Kalpa Pathum wrote:
> > > >  For simple circuit simulation, you can use Ktechlab (directly  
> > > > su -c
> > > >  'yum install -y ktechlab').
> > > >  It's not very fast, not very accurate, but very graphic and  
> > > > simple. It
> > > >  may fits for your purpose...
> > >
> > > wow this app suits my requirement. Thanks
> > >
> > > Thanks for all you foryour quick and friendly responses. KTechlab  
> > > was
> > > more that enough for my requirement. It seems that the other apps
> > > including gEDA are move advanced and need a lot of effort in  
> > > learning.
> > >
> > > We will be having a module on circuit simulation in near future.  
> > > They
> > > use Spice and I hope to use ng-spice as I'm much more interested in
> > > FOSS.
> >
> >  Urr?  SPICE has always been freely available.  I remember  
> > downloading it
> > and building it on a VAX easily twenty years ago.
> But they don't offer a linux version I guess.

  I'm pretty sure I built it under Ultrix, which is an early BSD  
UNIX derivative.  I know I built a FORTRAN version under VMS, but I'm  
pretty sure I built one on Ultrix.

  SPICE 3f5 is the latest Berkeley release, and this is (if I recall  
correctly) the release from which ng-spice is derived.  3f5 does  
build under Linux, I think.

  But regardless, ng-spice is pretty much "real" SPICE, so you're on  
the right track!  Lots of companies have grabbed the free SPICE, made  
vendor-specific enhancements, and released it as a binary-only  
product (usually for one specific company's rickety, proprietary  
operating system) and often not for free.  This doesn't mean "SPICE  
isn't free". ;)

           -Dave

--
Dave McGuire
Port Charlotte, FL



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