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PCB Ground planes | diyAudio
https://www.diyaudio.com/community/threads/pcb-ground-planes.154324/
A solid ground plane increases capacitive coupling to ground by some pf/cm^2, which forms a low pass filter. That's usually not a big deal, though. There are hatched variants of ground planes, but these again trade lower coupling for higher impedance. Most DIY pcbs are double-sided as that's widely available.
What is PCB Ground Plane and How is it used in Your Design?
https://absolutepcbassembly.com/what-is-pcb-ground-plane/
The ground plane on the PCB or printed circuit board is commonly a vast area made of metal that generally gets pertained to the energy supply potential or the mutual attachment, known as ground. This special design helps in voltage return, signal recovery, etc.
Should I use a ground plane in my audio frequency PCB ...
https://www.eevblog.com/forum/projects/should-i-use-a-ground-plane-in-my-audio-frequency-pcb/
This makes ground plane for audio frequencies a bad idea because if significant current is following in the ground plane different parts might have different voltage drops causing ground loops and noise. I’m really curious if there are any best practices to follow, books, articles or other resources which describe designing audio frequency PCBs.
Audio circuit: single point PLUS ground plane - Electrical ...
https://electronics.stackexchange.com/questions/314724/audio-circuit-single-point-plus-ground-plane
With a large ground plane the impedance is very much lower than individual tracks and hence any signal current passing through the plane produces a very much smaller associated volt drop. That volt drop might be a lot bigger if your audio circuit has significant gain and ability to drive low value loads.
PCB Grounding Techniques: To Do and What ... - Upverter …
https://blog.upverter.com/2019/11/07/pcb-grounding-techniques-to-do-and-what-not-to-do/
Any large piece of copper on the PCB connected to the ground is called ground plane. In a two-layer board, this is usually spread across the bottom layer, while traces and components are arranged on the top layer. In a multilayer PCB, one of the interior copper planes is normally dedicated to a ground plane.
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