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T O P I C    R E V I E W
shadders Posted - 18 Apr 2013 : 20:36:28
Hi,

I am designing a power amplifier - and due to the number of components and proposed board layout, i was planning to use a number of wire links to ensure the integrity of a continuous ground plane.

Are wire links in analogue PCB design relatively common or acceptable ?.

Are there any drawbacks at all ?

Thanks in advance,

Regards,

Shadders.
6   L A T E S T    R E P L I E S    (Newest First)
shadders Posted - 19 Apr 2013 : 09:54:14
Hi Iain,

Thanks - yes will do.

Regards,

Shadders.
Iain Wilkie Posted - 19 Apr 2013 : 09:32:39
I cannot see this being a problem, just ensure your links are as short as you can make them, and that they are heavy enough for the currents involved.

Iain
shadders Posted - 18 Apr 2013 : 22:28:52
Hi Iain,

Yes, and audio power amplifier - cut off frequency closed loop will be 100kHz approximately.

I think standard wire links at this frequency should be ok.

Would you agree with this ?.

Thanks and regards,

Shadders.
Iain Wilkie Posted - 18 Apr 2013 : 21:42:51
Shadders, is it an audio design, an if not, what frequency ?

Iain
shadders Posted - 18 Apr 2013 : 21:20:54
Hi Iain,

Thanks for the reply.

This is for a number of single resistor connections across the board, to allow the ground plane to be uninterrupted. I have seen designs with links, but was not sure if there were any disadvantages.

Thanks for your guidance on this, much appreciated.

Regards,

Shadders.
Iain Wilkie Posted - 18 Apr 2013 : 20:48:49
Hi Shadders,

If its audio power I doubt if there would be any problem, but you would not normally want to link planes with local links as this mean the planes are being joined by a localised inductive connection. Unless your trying to do this on a two layer board, there should be no problem in maintaining a continuous power plane anyway.

Iain