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Control circuit using toggled activation to reduce inrush currents

  • US 7,481,744 B2
  • Filed: 08/08/2006
  • Issued: 01/27/2009
  • Est. Priority Date: 07/26/2002
  • Status: Expired due to Fees
First Claim
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1. A method of activating one or more fans mounted on an exercise machine, the method comprising:

  • determining a user-selected fan setting for a plurality of fans designed to provide moving air to a user of an exercise machine through one or more openings in the exercise machine, the opening generally positioned around or above a height of an upper torso area of a user; and

    outputting a drive signal activating the fans based on the user-selected fan-setting, wherein the drive signal accounts for current tolerance levels that can be drawn through a board-mounted transformer, said tolerance levels being near or below current levels needed to jumpstart the fans, wherein direct application of current sufficient to simultaneously jumpstart said fans draws currents at a level potentially harmful to one or more components of fan controller circuitry.

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