X-Authentication-Warning:	delorie.com: mail set sender to geda-user-bounces using -f
X-Recipient:	geda-user AT delorie DOT com
Date:	Sat, 31 Jan 2015 13:01:36 -0600 (CST)
From:	mskala AT ansuz DOT sooke DOT bc DOT ca
X-X-Sender:	mskala AT localhost DOT localdomain
To:	geda-user AT delorie DOT com
Subject:	Re: [geda-user] Re: Ground Plane Behavior?
In-Reply-To:	<CAOFvGD4OxiFm3f9w1hp5BuKQJBQgyf6s14G3ESUWo20_ivdSPg@mail.gmail.com>
Message-ID:	<alpine.LNX.2.02.1501311257480.25713@localhost.localdomain>
References:	<CAOFvGD4OxiFm3f9w1hp5BuKQJBQgyf6s14G3ESUWo20_ivdSPg AT mail DOT gmail DOT com>
User-Agent:	Alpine 2.02 (LNX 1266 2009-07-14)
MIME-Version:	1.0
X-Scanned-By:	MIMEDefang 2.74
Reply-To:	geda-user AT delorie DOT com
Errors-To:	nobody AT delorie DOT com
X-Mailing-List:	geda-user AT delorie DOT com
X-Unsubscribes-To:	listserv AT delorie DOT com

On Sat, 31 Jan 2015, Jason White wrote:
> That might be convenient, but I think it could be a bit of a "trap" so
> to speak. If you have large currents flowing from the re-flooded
> "hole" in the copper pour, you may not realize that their is an
> electrically poor connection (a single via) to the actual plane.

The same problem exists - but is probably worse - when part of the copper
pour is connected to the rest only through a very narrow gap, such as
between two DIP pads.  Unless PCB is going to do a proper finite-element
analysis to determine the resistance in such cases, I think it's okay to
let a single via be treated as a good enough connection to reconnect the
pour, and force the user to think it, as they are already forced to do.

-- 
Matthew Skala
mskala AT ansuz DOT sooke DOT bc DOT ca                 People before principles.
http://ansuz.sooke.bc.ca/

- Raw text -