[sdiy] Ground planes

[Magnus Danielson]

David G. Dixon wrote:
>> The solution is to make a clearence around the hole, make a
>> normal hole and pad, and then draw either two or four wires to the
>> surrounding ground-plane. That is a compromise to solve both problems.
>>     
>
> Really, there's no need for more than one trace into the ground plane.
> However, I use one and two sometimes, and either one is easy to solder (and
> desolder).  Two traces on opposing sides of the pad are probably better,
> particularly if you think you might need to desolder at some point.
>
>   
Well, I wanted to explain what they usually look like. The crossed ones 
is fairly often seen on PCBs. When going to higher frequencies/slewrates 
lowering intrinsic inductace becomes somewhat of an issue, but most do 
not suffer.

Cheers,
Magnus