Patent ID: 6697255
Filing Date: 2004-02-24
Classification: H05K

Abstract:
In a circuit board for use in a chassis, wherein the circuit board comprises a substrate and one or more circuit components mounted thereon, the improvement comprisingone or more flow-diverting elements that define, at least in part, the circuit board's impedance to air flow in the chassis, wherein those one or more flow-diverting elements are disposed in a plenum defined between the circuit board and a cover therefor, wherein those one or more flow-diverting element are coupled to at least one of circuit board or the cover, and wherein those one or more flow-diverting elements are at least one of positioned, sized and shaped so that the impedance of the circuit board substantially matches that of one or more further boards in the chassis that would otherwise have a different impedance to air flow in the chassis than the circuit board.