[sdiy] Ground planes

[cheater cheater]

Ahhh, gotcha, thanks Tom and David! Really good explanation!

Yeah, I know that property of ground planes... good for low-power
vreg's in digital sections :) seen a lot of them with the back just
soldered to ground.

D.

On Tue, Mar 30, 2010 at 16:44, Tom Wiltshire <tom at electricdruid.net> wrote:
> Damian,
>
> Pads which are connected to the ground plane are connected by thin tracks,
> called 'thermals'. The reason being that if they were simply a part of the
> ground plane not covered by soldermask, the groundplane would act as too
> much of a heatsink to be able to do a decent job of soldering to the pad.
> David is complaining that even with the thin traces, the groundplane makes
> soldering much harder.
>
> T.
>
> On 30 Mar 2010, at 12:14, cheater cheater wrote:
>
>> 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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>
>