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Re: gEDA-user: TwoStageAmp example
On 4/2/07, Stuart Brorson <sdb@xxxxxxxxxx> wrote:
> I've tried
>
> tran 100us 100ms
> plot vout 10*vin
>
> and I see a couple of pretty sinewaves. That's enough to get me
> started. So, I guess I'll say I get sensible results.
Sounds good.
You can also try
ac dec 10 1Hz 1MegHz
plot vout vin
to get a freq response curve.
OK, I did that, although the frequency response of "vin" is kinda boring :-)
If you were to assume that my entire exposure to spice based
simulation in the past consisted of playing with SwitcherCAD for an
afternoon or two, where would you recommend I go next in order to
learn more? The SPICE3 syntax and commands listed at
http://newton.ex.ac.uk/teaching/CDHW/Electronics2/userguide/ are fine,
but reading that "ac" command performs ac small-signal analysis did
not prepare me for the leap of faith that plotting vout would give me
a voltage-vs-frequency curve, whereas seeing the example of the
transient analysis and plotting a voltage-vs-time curve did make
intuitive sense to me. Where can I go to tune up my intuition?
> BTW, would you mind if I added a reference to the Cambridge University
> to your csygas page in the wiki?
Please go ahead and do it! The more documentation the better!
I'll go get my login for the wiki and add it. (I know that the spirit
of a wiki allows me to freely edit what you've written without
obtaining your permission first, but, since that page reflects a
paper/article you've probably published elsewhere, I felt it was
polite to ask before I went int and mucked it up.)
As long as I'm thinking about this and playing with it... does anybody
know if ngspice can be compiled with readline support? The one I have
(installed on my FC6 box via yum) doesn't support it and I miss the
command line history and editing features. I'll go look into it
shortly, but I figured I would ask anyway.
--wpd
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