Patent ID: 6570139
Filing Date: 2003-05-27
Classification: G05D,H05K

Abstract:
An apparatus for modifying ambient air conditions comprising:a housing, a fan assembly positioned within the housing and including a motor and a fan blade attached to a shaft of the motor; and an electronic control circuit electrically coupled to the motor, and adapted to provide power thereto, the electronic control circuit comprising a single switch to turn on operating power to the apparatus and to set a mode of operation to one of manual mode and automatic mode, wherein the single switch sets a plurality of pre-determined power levels of operation in manual mode, and further wherein the single switch selects a pre-set threshold ambient air condition in automatic mode, the electronic control circuit further including a sensor for sensing an ambient air condition and a means for comparing the pre-set threshold ambient air condition to the sensed ambient air condition, wherein the electronic control circuit provides power to the fan assembly motor to substantially achieve the pre-set threshold ambient air condition and terminates power to the fan assembly motor when the pre-set threshold ambient air condition is substantially attained when set in automatic mode.