Re: [ng-spice] u2 function


To ng-spice@ieee.ing.uniroma1.it
From Daniele Pinto <daniele.pinto@tei.ericsson.se>
Date Tue, 02 May 2000 16:48:12 +0200
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Please,
could anyone put me out from this e-mail list?

Thanks.


Paolo Nenzi wrote:
> 
> On Tue, 2 May 2000, widlok wrote:
> 
> >     My u2 is much simpler, because it was very difficult to get time 
>there.
> > u2(x) returns 0 if x<0, 1 if x>1 and x if 0<x<1. This works really good 
>in my
> > model.
> Oops, I have understood that your model was different from IF-THEN-ELSE
> condition. Your function is a class C0 function, continuous but with first
> and subsequent derivatives not continuos, this may cause convergence
> problems.
> 
> Another point, do you believe that this function is a step for your
> circuit ? Some fast circuit may see it as a ramp, am I right or I am only
> a sophisticated theorethical EE student ?
> 
> Paolo

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Eng. Daniele Pinto

Hardware Designer

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