CPC H05K 7/20945 (2013.01) [F04D 27/004 (2013.01); G05B 15/02 (2013.01); H05K 7/20909 (2013.01); H02M 7/02 (2013.01); H02M 7/42 (2013.01)] | 20 Claims |
1. A power supply, comprising:
a casing;
an AC-to-DC converter;
an inverter electrically coupled to the AC-to-DC converter;
a transformer having a primary side and a secondary side, wherein the inverter is electrically coupled to the primary side of the transformer;
an output rectifier electrically coupled to the secondary side of the transformer;
a fan, disposed in the casing and configured to remove heat from the casing generated by the AC-to-DC converter, the inverter and the output rectifier; and
a fan controller configured to control when the fan is operational, wherein the fan controller is configured to execute a state machine that changes states based at least on a dynamically adjustable counter that is configured to increment and decrement at different rates.
|