CPC H05K 7/20172 (2013.01) [H05K 7/20736 (2013.01); H05K 7/20836 (2013.01)] | 20 Claims |
1. A method, comprising:
causing a fan to switch between an axial operation mode and a centrifugal operation mode by adjusting a respective blade angle of each blade of a plurality of blades based at least in part upon one or more acoustic values.
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