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???
01/26/07 04:22
Modified:
  01/26/07 04:23
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Msg Score: +1
 +1 Informative		 #131522 - No more than a toy for amateurs
Responding to: ???'s previous message
Russ said:
These guys:

http://www.expresspcb.com/

give away schematic capture and layout software. I haven't used it personally, but one of my pals has and says it works fine.


That's how they recommend to place the power and ground traces:




Hhmm, that's not what professionals do today!

Today we do everything to keep the current loop areas and the associated H-fields minimal. Omitting the solid ground plane is nearly a guarantee to fail the CE-tests. Not even mentioning the common mode noise...

It's ridiculous to recommend a design practise, which worked in the seventies (when EMC was no issue), but WILL fail today.

Kai

List of 37 messages in thread
TopicAuthorDate
Schematic Programs            01/01/70 00:00      
   Just because that's how it was done...            01/01/70 00:00      
      Conversion needs to be done sometime..            01/01/70 00:00      
         Do yourself a favor ...            01/01/70 00:00      
            Talk the talk. Walk the walk?            01/01/70 00:00      
               What, exactly, is it that you want, Charles?            01/01/70 00:00      
            "Target" is awesome!            01/01/70 00:00      
               Target has it's limitations            01/01/70 00:00      
                  bugs are OK if the software's free?            01/01/70 00:00      
                     Subjectively            01/01/70 00:00      
   Free CAD Software            01/01/70 00:00      
      There's no such thing as a free lunch.            01/01/70 00:00      
      Taken a look            01/01/70 00:00      
      No more than a toy for amateurs            01/01/70 00:00      
   If you're paying an engineer's salary..            01/01/70 00:00      
      The problem with OrCAD CAPTURE            01/01/70 00:00      
         Disagree            01/01/70 00:00      
            It depends what's used for comparison.            01/01/70 00:00      
               re "library find"            01/01/70 00:00      
                  That's true ... sadly ...            01/01/70 00:00      
                     that would make it quite a list            01/01/70 00:00      
                        That might work in some cases, but ...            01/01/70 00:00      
   the most important issue in this situation is            01/01/70 00:00      
   cheap schematic capture            01/01/70 00:00      
   ORCAD and why            01/01/70 00:00      
      Yes, it's true, it has become a standard            01/01/70 00:00      
         Cheapest way there is....            01/01/70 00:00      
            cheapest?            01/01/70 00:00      
               hence, be careful            01/01/70 00:00      
   re: schematic programs            01/01/70 00:00      
   free schematics            01/01/70 00:00      
   based on what I've seen so far ...            01/01/70 00:00      
   tinycad is Your solution            01/01/70 00:00      
      is it?            01/01/70 00:00      
         maybe            01/01/70 00:00      
   Kicad has not yet been mentioned            01/01/70 00:00      
      It's Good            01/01/70 00:00      

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