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PCB Design Rules

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Initially PCBs were designed manually by creating a photomask on a clear mylar sheet, usually at two or four times the true size. Starting from the schematic diagram the component pin pads were laid out on the mylar and then traces were routed to connect the pads. If you have many questions of PCB Design, please come here!

Community > Groups > PCB Design Rules > Ground Plane of PCB
Ground Plane of PCB
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Michele Deligio

I am a green hand to pcb design, I build custom tube audio gear. And using a PCB may be better for some gears. If using a large ground plane on the top as well as the bottom of the pcb,will there be any problems? The PCB designed is for a tube preamp, so want to make sure to eliminate noise by using a ground plane.
Statement: This post is only the personal view of the author and does not represent the opinions of

Stean Fuhos

As the impedances of the PCB is so high, the advantage is actually quite small. You get the most benefit from grounded metal shields around the circuit; usually the chassis. If this can't be connected to signal ground, you may want to design a second floating shield inside.


The dimensions of the stitched side-to-side vias and areas can form resonant circuits or cause problems at rf frequencies.


For most audio frequency circuits , a pcb will cause no more hassle than hand wiring . High gain circuits can give fits. Sometimes the use of all grounds connecting back to a central point will eliminate loops . good ground planes can help eliminate problems , while bad ones can cause problems.

Chicken Hacker

For audio work though , the capacitive reactance will be low to decrease your concern. inductive reactance of traces will likewise be negligible in effect . This is not to say that one can ignore good housekeeping practices . Theorily , any circuit with gain at or over unity can be made to whistle or suffer from deleterious effects accidentally , given enough bad engineering .

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