Electricity: power supply or regulation systems – Output level responsive – Using a three or more terminal semiconductive device as the...
Reexamination Certificate
2005-03-08
2005-03-08
Sterrett, Jeffrey (Department: 2838)
Electricity: power supply or regulation systems
Output level responsive
Using a three or more terminal semiconductive device as the...
C363S039000
Reexamination Certificate
active
06864670
ABSTRACT:
A method for eliminating noise interference and acoustic noise by a printed circuit board ground plane layout is disclosed. The method is applied to a circuit system having multiple outputs, wherein the circuit system has a first power converting module, a second power converting module and a printed circuit board. The first power converting module and the second power converting module respectively includes a first ground pin group and a second ground pin group. The method includes the steps of (a) connecting each ground pin of the first ground pin group to a respective solder point and connecting each solder point to a first node, and connecting each ground pin of the second ground pin group to a respective solder point and connecting each solder point to a second node, and (b) connecting the first node and the second node to a common node and connecting the common node to a solder point of a common ground terminal on the printed circuit board ground plane.
REFERENCES:
patent: 4034232 (1977-07-01), LaVenture
patent: 5886508 (1999-03-01), Jutras
patent: 5969512 (1999-10-01), Matsuyama
patent: 6674270 (2004-01-01), Sakamoto
patent: 6771052 (2004-08-01), Ostojic
Lai Hui-Chuan
Lin Jing-Cheng
Ouyang Jr-Hong
Bacon & Thomas PLLC
Delta Electronics , Inc.
Sterrett Jeffrey
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