Re: gEDA-user: Voltage symbols and Spice

2011-01-03 Thread Levente Kovacs
On Mon, 03 Jan 2011 23:52:12 +0100
"Johnny Rosenberg"  wrote:

> Den 2011-01-03 23:37:23 skrev John Doty :
> 
>  [...]  
> 
> A bit off topic, but is it recommended to call something ”5VA” in
> this case? Couldn't it be confused with the fact that VA means
> Volt-Amperes, which is what you measure apparent power in?

I would not start a netname by a numeric character (I don't have any reason
why). I call this kind of nets as AVCC and DVCC. When I have more than one
supply net I call them AVCC1, AVCC2, etc. I know this is a bit uncommon,
because you have to have a table somewhere (at least one in your mind) which
links which supply is what.  AVCC2=5V, AVCC1=12V etc.

Same goes for ground connections. AGND and DGND.

HTH,
Levente

-- 
Levente Kovacs
http://levente.logonex.eu


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Re: gEDA-user: Voltage symbols and Spice

2011-01-03 Thread Oliver King-Smith
   Different places have different standards, but it is not that uncommon
   to use the Blah Blah A designation in some form to indicate an analog
   supply as opposed to a digital supply.  If you really want to get folks
   frothing about conventions, just bring up the split ground planes vs
   solid ground plane.
   Oliver
 __

   From: Johnny Rosenberg 
   To: gEDA user mailing list 
   Sent: Mon, January 3, 2011 2:52:12 PM
   Subject: Re: gEDA-user: Voltage symbols and Spice
   Den 2011-01-03 23:37:23 skrev John Doty <[1]...@noqsi.com>:
   >
   > On Jan 3, 2011, at 3:31 PM, Oliver King-Smith wrote:
   >
   >>  I am trying to use the "generic-power.sym" in my schematic.  I am
   >>  setting the net attribute to 5VA (for 5V analog).  I was hoping
   this
   >>  would make all the nets with such a symbol.  When I try to run
   gnetlist
   >>  with the spice-sdb backend I get this error printing out several
   times.
   >>  Got an invalid net= attrib [net=5VA]
   >>  Missing : in net= attrib
   >>  The nets don't appear connected in the spice file.  Do folks have
   any
   >>  suggestions on how to solve this?
   >>  Oliver
   >
   > You must include the pin number in a net attribute, e.g.:
   >
   > net=5VA:1
   >
   > John Doty  Noqsi Aerospace, Ltd.
   > [2]http://www.noqsi.com/
   > [3]...@noqsi.com
   >
   A bit off topic, but is it recommended to call something �5VA� in this
   case? Couldn't it be confused with the fact that VA means Volt-Amperes,
   which is what you measure apparent power in?
   --Kind regards
   Johnny Rosenberg
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References

   1. mailto:j...@noqsi.com
   2. http://www.noqsi.com/
   3. mailto:j...@noqsi.com
   4. mailto:geda-user@moria.seul.org
   5. http://www.seul.org/cgi-bin/mailman/listinfo/geda-user


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Re: gEDA-user: Voltage symbols and Spice

2011-01-03 Thread Johnny Rosenberg

Den 2011-01-03 23:37:23 skrev John Doty :



On Jan 3, 2011, at 3:31 PM, Oliver King-Smith wrote:


  I am trying to use the "generic-power.sym" in my schematic.  I am
  setting the net attribute to 5VA (for 5V analog).  I was hoping this
  would make all the nets with such a symbol.  When I try to run  
gnetlist
  with the spice-sdb backend I get this error printing out several  
times.

  Got an invalid net= attrib [net=5VA]
  Missing : in net= attrib
  The nets don't appear connected in the spice file.  Do folks have any
  suggestions on how to solve this?
  Oliver


You must include the pin number in a net attribute, e.g.:

net=5VA:1

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



A bit off topic, but is it recommended to call something ”5VA” in this  
case? Couldn't it be confused with the fact that VA means Volt-Amperes,  
which is what you measure apparent power in?


--
Kind regards

Johnny Rosenberg


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Re: gEDA-user: Voltage symbols and Spice

2011-01-03 Thread John Doty

On Jan 3, 2011, at 3:31 PM, Oliver King-Smith wrote:

>   I am trying to use the "generic-power.sym" in my schematic.  I am
>   setting the net attribute to 5VA (for 5V analog).  I was hoping this
>   would make all the nets with such a symbol.  When I try to run gnetlist
>   with the spice-sdb backend I get this error printing out several times.
>   Got an invalid net= attrib [net=5VA]
>   Missing : in net= attrib
>   The nets don't appear connected in the spice file.  Do folks have any
>   suggestions on how to solve this?
>   Oliver

You must include the pin number in a net attribute, e.g.:

net=5VA:1

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




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gEDA-user: Voltage symbols and Spice

2011-01-03 Thread Oliver King-Smith
   I am trying to use the "generic-power.sym" in my schematic.  I am
   setting the net attribute to 5VA (for 5V analog).  I was hoping this
   would make all the nets with such a symbol.  When I try to run gnetlist
   with the spice-sdb backend I get this error printing out several times.
   Got an invalid net= attrib [net=5VA]
   Missing : in net= attrib
   The nets don't appear connected in the spice file.  Do folks have any
   suggestions on how to solve this?
   Oliver


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