120x120x38(mm) 4″(inch) 110/220(VAC) 0.02(A) 5(watt) panel cooling fan

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This EC technology fan runs on both 110vac as well as 220vac power supply

EC stands for Electronically Commutated and it combines AC and DC voltages, bringing the best of both technologies : the motor runs on a DC voltage, but with a normal AC supply. DC motors already have low power consumption but if used in an AC application, the power needed converting AC to DC, using a bulky, inefficient transformer. The EC motor incorporates voltage transformation within the motor. The non-rotating part of the motor (stator) is extended to make room for an electronic PCB board which includes power transformation AC to DC, as well as the controls. The motor runs on a DC voltage, but with a normal AC supply. DC motors already have low power consumption but if used in an AC application. The EC motor incorporates voltage transformation within the motor.