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Re: [Help-gnucap] gnucap development snapshot 2008-02-11

From: al davis
Subject: Re: [Help-gnucap] gnucap development snapshot 2008-02-11
Date: Tue, 12 Feb 2008 23:03:05 -0500
User-agent: KMail/1.9.7

On Tuesday 12 February 2008, Orestes Mas wrote:
> Can the parameters be swept in any way?
> For example, to model a voltage divider using a potentiometer
> I enter the following circuit:
> .param alpha=0
> Vg 1 0 DC 10V
> R1 1 2 {10k*(1-alpha)+0.1}
> R2 2 0 {10k*alpha+0.1}
> .print op v(2)
> **Here I'd like to sweep the 'alpha' parameter from 0 to 1 to
> simulate the change of the potentiometer's cursor position.
> I've tried with the "sweep" and "dc" commands, with no luck.

I was wondering how long it would take for someone to ask for 
that ..   about a day.

I can't think of an easy way yet, without some coding.  It's 

You can do:

.param alpha=.1
.param alpha=.2
.param alpha=.3


The old sweep command and the dc command do not sweep params.  
old code.....    

This is high on the to-do list.

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