RE: [ng-spice-devel] a useful device


To "'ng-spice-devel@ieee.ing.uniroma1.it'" <ng-spice-devel@ieee.ing.uniroma1.it>
From "Serban Popescu(SC)" <serban.popescu@o2micro.com>
Date Thu, 22 Feb 2001 21:30:48 -0800
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Reply-To ng-spice-devel@ieee.ing.uniroma1.it

That's why the resistor device has an optional parameter named AC which
specifies the AC value. You can make nice DC/AC switches by using resistors
with a DC value of e.g. 1Ohm and an AC one of 10gOhms and viceversa:

r1 dcpath common 1 ac=10g
r2 acpath common 10g ac=1

Serban

> -----Original Message-----
> From: mcmahill@mtl.mit.edu [mailto:mcmahill@mtl.mit.edu]
> Sent: Thursday, February 22, 2001 8:03 PM
> To: ng-spice-devel@ieee.ing.uniroma1.it
> Subject: [ng-spice-devel] a useful device
> 
> 
> 
> you know what would be useful to have?  A voltage source like 
> device which
> you could specify to only be present for an operating point 
> analysis.  The
> application is where you want to have something connected to 
> get a circuit
> biased correctly and then vanish during an AC analysis.  I often times
> just use a very large inductor, but it might be nice to 
> actually have a
> device for this.
> 
> -Dan
> 
> 

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