Re: gEDA-user: How to use Transformer in gschem

[John Doty <jpd@xxxxxxxxx>]

On Jul 1, 2010, at 8:41 AM, hari venkatesh wrote:

>   I want to simulate a rectifier circuit in gEDA, while i am generating
>   the netlist for the circuit.
>   i have given the refdes as T1, during netlist generation it is giving
>   error, refdes=T1 not found
>   Could u please mail me the list attributes that should be attached for
>   the transformer
>   Eg: refdes, value, model, footprint etc

Modeling transformers in SPICE requires some specialized knowledge. SPICE represents a transformer as inductors ("L"elements) with mutual inductance coupling ("K" elements). The "catalog" specs typically do not include the necessary information to formulate such a model, so measurement or informed guesswork is required.

Probably the easiest solution is to use a AC independent source (vac-1.sym in gschem) to drive the rectifier, and forget about modeling the transformer.

John Doty              Noqsi Aerospace, Ltd.
http://www.noqsi.com/
jpd@xxxxxxxxx




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