Re: Time Step too small in EWB

From: Winfield Hill (hill_a_at_t_rowland-dotties-harvard-dot.s-edu)
Date: 12/29/04 

Date: 28 Dec 2004 18:11:18 -0800

Jim Thompson wrote...
>
> Make sure your circuit has realistic impedances... ideal inductors
> can ruin your day ;-)

 Right. Standard spice inductors have zero resistance, which means
 they have infinite Q. Standard spice capacitors also have zero
 resistance, which means they have infinite Q. These two components
 often occur together (all real inductors have self capacitance, and
 real nodes have capacitance to ground, etc.), potentially creating
 resonances with infinite Q. How is spice supposed to be able to deal
 with that? It's up to the user to create real components, by adding
 appropriate lossy resistances. 

-- 
 Thanks,
    - Win