[sdiy] Ground planes

[David Ingebretsen]

It may be an Eagle specific term. Instead of just making a hole that is in
the groud plane, Eagle (and other PCB software) makes an isolated pad
connected to the ground plane with smaller traces. It's supposed to help
mitigate a heat sink effect when soldering components which connect to
ground.

David

~~ -----Original Message-----
~~ From: cheater cheater [mailto:cheater00 at gmail.com]
~~ Sent: Tuesday, March 30, 2010 5:14 AM
~~ To: David Ingebretsen
~~ Cc: synth-diy
~~ Subject: Re: [sdiy] Ground planes
~~ 
~~ Hi David,
~~ 
~~ > with "thermals", it's a
~~ > pain to solder pads connected to a ground plane.
~~ 
~~ what do you mean?
~~ 
~~ Thanks
~~ D.
~~ 
~~ On Tue, Mar 30, 2010 at 12:44, David Ingebretsen <dingebre at 3dphysics.net>
~~ wrote:
~~ > Is there any value to adding a ground plane fill to a PCB for the
~~ typical
~~ > types of circuits for audio module? How about one on both sides of a
two
~~ > sided PCB? Is there any difference in putting it on the top versus
~~ bottom?
~~ >
~~ > I'm getting ready to send a board off to be made. It's easy to add it,
~~ but
~~ > I'm not sure the theory behind it other than even with "thermals", it's
~~ a
~~ > pain to solder pads connected to a ground plane.
~~ >
~~ > I've noticed some PCB's I've purchased have them, but many don't and I
~~ > haven't heard any artifacts either way.
~~ >
~~ > Thanks,
~~ >
~~ > David
~~ >
~~ > David M. Ingebretsen M.S., M.E.
~~ > Collision Forensics & Engineering, Inc.
~~ > 2469 East Fort Union Blvd. STE 114
~~ > Salt Lake City, UT 84121
~~ > www.CFandE.com
~~ >
~~ > 801 733-5458 Office
~~ > 801 842-5451 Cell
~~ >
~~ > dingebre at CFandE.com
~~ > dingebre at 3dphysics.net
~~ >
~~ >
~~ >
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