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Re: gEDA-user: Spice &geda



On Feb 21, 2011, at 11:23 AM, darko wrote:

> Hello.
> I'm relatively new to geda but how to make a spice simulation of attached schema with ng spice I'm getting error on first step  and that is generating net list for the spice simulator i tried with
> 
> :~$ gnetlist [OPTIONS] -g spice-sdb filename

"[OPTIONS]" shouldn't be in the command literally: it represents optional arguments you might provide. And "filename" represents *your* files's name. So what I used was:

gnetlist -o HIPAS.cir -g spice-sdb HIPAS.sch 

> 
> but it tels me that spice sdb is some kind of error and I get empty netlist
> 
> Can some one correct my schematics and add what I need to get on pin 7 output frequency(simulation)

Other problems:

You are using pinlabel= attributes incorrectly. They identify individual pins in the symbol. They should not be attached to a component at schematic level. In this case, they may simply be deleted from your schematic: they serve no purpose.

The out-1 symbol is for hierarchical netlisting of printed circuit board designs, not for SPICE simulation. It doesn't work the way you are trying to use it. I removed it and attached the netname "out" to your output net. Now:

ngspice HIPAS.cir
ac dec 10 1k 1g
plot out

Shows a nice hipass response.

Attachment: HIPAS.sch
Description: Binary data


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



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