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From:	Mike Bushroe <mbushroe AT gmail DOT com>
Date:	Mon, 17 Nov 2014 15:56:06 -0700
Message-ID:	<CA+CyYa0T+8jXF5c5sFgzbo74hGg90qHLvKd_nK9c0FK86AwpYQ@mail.gmail.com>
Subject:	Re: [geda-help] Multiple supply voltages
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As to my original problems, using the power forms only re-attempt, once DJ
had reminded me that the error checking was being done after all the
elements are dog piled into a single corner, the shorts dropped done to
two. But even after re-editing the schematic and re-replacing the voltage
regulators and full-wave rectifier bridge symbols with sanitized versions,
and dispersing all elements I STILL get the GND and minus 120V supply rails
listed as shorting each other out on just about every pin. So I still think
there is some hidden assumption that the low side of a 7805 or a full-wave
is going to GND, and that is causing the warning messages. But the rats
still look correct.

  I have gone back to the previous version with one huge top level and 3
separate copies of the sub-schematic and I am trying to layout that
conversion to pcb. The error log shows a much larger list of shorted out
nets, but so far it looks like most of the rat lines go where they should.
I will still have to fix the netlist to combine the 4 instances of the
3phase (and thus 3 slot) MOSFET driver chip (FAN7388). The conversion
turned each slot into a new element, and somehow the top level schematic
got one too. But other than that I may be able to complete the placement
and trace routing if I just ignore the million error messages.

Mike

On Mon, Nov 17, 2014 at 12:08 PM, DJ Delorie <dj AT delorie DOT com> wrote:

>
> > Doesn't that risk breaking things for people who did not embed symbols
> > into their designs?
>
> Of course it would.  That's why fixing it is so hard.
>



--=20
"Creativity is intelligence having fun." =E2=80=94 Albert Einstein

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<div dir=3D"ltr"><div><div>As to my original problems, using the power form=
s only re-attempt, once DJ had reminded me that the error checking was bein=
g done after all the elements are dog piled into a single corner, the short=
s dropped done to two. But even after re-editing the schematic and re-repla=
cing the voltage regulators and full-wave rectifier bridge symbols with san=
itized versions, and dispersing all elements I STILL get the GND and minus =
120V supply rails listed as shorting each other out on just about every pin=
. So I still think there is some hidden assumption that the low side of a 7=
805 or a full-wave is going to GND, and that is causing the warning message=
s. But the rats still look correct.<br><br></div>=C2=A0 I have gone back to=
 the previous version with one huge top level and 3 separate copies of the =
sub-schematic and I am trying to layout that conversion to pcb. The error l=
og shows a much larger list of shorted out nets, but so far it looks like m=
ost of the rat lines go where they should. I will still have to fix the net=
list to combine the 4 instances of the 3phase (and thus 3 slot) MOSFET driv=
er chip (FAN7388). The conversion turned each slot into a new element, and =
somehow the top level schematic got one too. But other than that I may be a=
ble to complete the placement and trace routing if I just ignore the millio=
n error messages.<br><br></div>Mike<br></div><div class=3D"gmail_extra"><br=
><div class=3D"gmail_quote">On Mon, Nov 17, 2014 at 12:08 PM, DJ Delorie <s=
pan dir=3D"ltr">&lt;<a href=3D"mailto:dj AT delorie DOT com" target=3D"_blank">dj@=
delorie.com</a>&gt;</span> wrote:<br><blockquote class=3D"gmail_quote" styl=
e=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><span c=
lass=3D""><br>
&gt; Doesn&#39;t that risk breaking things for people who did not embed sym=
bols<br>
&gt; into their designs?<br>
<br>
</span>Of course it would.=C2=A0 That&#39;s why fixing it is so hard.<br>
</blockquote></div><br><br clear=3D"all"><br>-- <br><div class=3D"gmail_sig=
nature"><div dir=3D"ltr"><span style=3D"font-family:arial,sans-serif;font-s=
ize:11pt">&quot;Creativity is intelligence having fun.&quot; =E2=80=94 Albe=
rt Einstein</span></div></div>
</div>

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