Re: [Help-gnucap] Transistor models

[asomers]

Do you need to know how to make your own models, or do you just want
models to use while designing your amplifier?  If the latter, then you
can try spicelib http://github.com/werner2101/spicelib .  It is a set
of scripts that will download spice models from many vendors
(including Philips aka NXP) and fix them to work with Gnucap and
NGSpice.  Just do:

git clone http://github.com/werner2101/spicelib.git
cd spicelib
scons unpack

The models will appear in the model_library directory.

On Fri, Mar 5, 2010 at 3:22 AM, vsrk sarma <address@hidden> wrote:
> I need help in guessing correct parameters for transistor models given in
> gnucap. Specifically how does one go about utilising datasheet information
> (say for 2N3553, Philips) for setting. My search helped in setting only BF,
> IS and TF. Are these enough for designing a circuit working at about 100Mhz
> (tuned amplifier)?
> Are gnucap simulations useful for small signal operation or can they be used
> for simulation of  large signal operation? Perhaps it may require variation
> of hfe and jn.capacitances. Is it possible to include them in setting model
> parameters?
>
> --
> vsrk sarma
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