Method and apparatus for controlling a fan

  • US 7,075,261 B2
  • Filed: 04/10/2002
  • Issued: 07/11/2006
  • Est. Priority Date: 04/10/2002
  • Status: Active Grant
First Claim
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1. A method for controlling a fan, the method comprising:

  • applying power to the fan, wherein in first applying power to the fan the fan is substantially at rest;

    performing a fan startup routine comprising monitoring a speed of the fan, and reducing current supplied to the fan responsive to the fan speed reaching or exceeding a minimum fan speed threshold, wherein in reducing the current supplied to the fan, the fan speed remains at a level commensurate with at least the minimum fan speed threshold; and

    entering an automatic fan control mode responsive to the fan speed remaining at the level commensurate with at least the minimum fan speed threshold.

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