Re: gEDA-user: 2N3906 gschem & pcb

["George M. Gallant, Jr." <ggallant571@xxxxxxxxxxx>]

Is there a method to assign the device type in gschem such that pcb will fetch
the correct type? John suggested creating a separate part id (John also likes to
create his own footprints). At a minimum, I think gschem and pcb should default
to the same labeling scheme and as I don't care which perhaps we use use the
scheme preferred in Antarctica. 

George

On Mon, 2006-07-10 at 19:22 +0200, Karel Kulhavy wrote:
> On Mon, Jul 10, 2006 at 05:41:19PM +0200, Wojciech Kazubski wrote:
> > > I think there is a difference in pin assignments on the 2N3906
> > > parts between GSCHEM and PCB.
> > >
> > >                        E   B    C
> > >     PCB            1    2    3
> > >     GSCHEM    3    2    1
> > >
> > > I am not very good at transistors and the resultant circuit
> > > has some strange behavior (not all bad). I notice that some
> > > transistors in gschem use the EBC notation while others
> > > use 123 or 321.
> > >
> > > George
> > 
> > There are two methods of numbering pins in TO92. One is prefered in Europe, 
>
> Actually there are 6 of them. So in which countries are the remaining 4
> preferred?
>
> CL<
> > while the second one is used in US. 
> > Compare a datasheet of BC547 from Philips and for example TL431 from 
> > Fairchild:
> > http://noel.feld.cvut.cz/semi/philips/acrobat/7641.pdf
> > http://www.fairchildsemi.com/ds/TL/TL431A.pdf
> > So both programs are correct but to diffeent standards :-(
> > 
> > Wojciech Kazubski
> > 
> > 
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>
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