Ground Plane of PCB

2016/5/4 19:40:50

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.

Stean Fuhos

2016/11/23 20:36:59

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.


2016/9/18 15:12:06

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


2016/6/21 4:32:55

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.


2016/5/9 17:54:48

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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