Patent ID: 6864670

Claim:
A method for eliminating noise interference and acoustic noise by a printed circuit board ground plane layout applicable to a circuit system having multiple outputs, wherein said circuit system has a first power converting module, a second power converting module, and a printed circuit board, and said first power converting module and said second power converting module respectively comprises a first ground pin group and a second ground pin group, comprising steps of: (a) connecting each ground pin of said first ground pin group of said first power converting module to a respective solder point on said printed circuit board ground plane and connecting each solder point to a first node on said printed circuit board ground plane, and connecting each ground pin of said second ground pin group of said second power converting module to a respective solder point on said printed circuit board ground plane and connecting each solder point to a second node on said printed circuit board ground plane; and (b) connecting said first node and said second node to a common node and connecting said common node to a solder point of a common ground terminal on said printed circuit board ground plane.