Patent ID: 6515858
Filing Date: 2003-02-04
Classification: H05K

Abstract:
An electronic switching power supply comprising:a power input, at least one DC power output, components including rectifiers, transistors, transformers, inductors and capacitors, and switching electronics arranged to accept the power input and convert the power input into the at least one DC power output and wherein said components are disposed sequentially according to their cooling needs from highest to lowest, at least one printed circuit board for making electrical connections at least to those power dissipating components, at least one thermally conductive bar to which the components requiring cooling are mounted in thermal contact, wherein the placement of the components along the at least one thermally conductive bar is according to their cooling needs, an enclosure with an air inlet port and an air outlet port, the enclosure placed surrounding and making thermal contact with the at least one conductive bar and its mounted components and the at least one printed circuit board, wherein the enclosure, printed circuit board and conductive bar define at least one air path channel, at least one fan mounted to force air along the at least one air path channel from the air inlet port to the air outlet port and wherein the end of the thermally conductive bar is positioned along the air flow channel with the components with the highest cooling requirements nearest the at least one fan.