Re: gEDA-user: lost newbie

[John Doty <jpd@xxxxxxxxxxxxx>]

On Jan 7, 2006, at 4:56 PM, Marc wrote:

> Na i need to do this, im using this for an application of sorts the  
> powersupply is just the start.
>
> So i need to get it working

It's going to take you a lot longer than you think. I first  
encountered this sort of industrial strength EDA in 1993. It took me  
about four months to become productive with it despite my decades of  
experience with applied physics, circuit design and numerical  
analysis (I wrote a FORTRAN program for filter design in 1969). Of  
course that learning time was a worthwhile investment in the long  
run: the circuits I designed with that EDA system wound up on five  
spacecraft.

Do you know enough semiconductor physics to create models when you  
can't download them? Do you know enough about numerical analysis to  
recognize the symptoms of a calculation that's run off the rails  
because of a poorly conditioned matrix? Do you know how to fix such  
problems when they occur (one trick: parasitics are your friends ;-).  
This stuff is *hard* even with lots of experience and the very best  
tools: you're not going to just snap your fingers and make it work,  
and there are very serious limits to how much we can help you.

John Doty              Noqsi Aerospace, Ltd.
jpd@xxxxxxxxxxxxx