When examining the label on a dc brushless fan or examining a datasheet the value for the current draw will be given as an average current.
Brushless fan motor dc.
Current draw by a dc fan motor.
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A brushless dc electric motor bldc motor or bl motor also known as electronically commutated motor ecm or ec motor and synchronous dc motors are synchronous motors powered by direct current dc electricity via an inverter or switching power supply which produces electricity in the form of alternating current ac to drive each phase of the motor via a closed loop controller.
Most brands that design fans have specific volt limits for cooling products as too much juice can impact performance and stability.
This means that fans with high voltage hardware spin faster than fans with low voltage power components.
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What may not be understood is the current draw from this fan is not a dc current.
The new fan is quiet and blows the vapor twice as high as the old one did.
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This surge of electricity powers the brushless fan motor that spins that fan.
The leads are shorter than the one that was built into the humidifier but the connector reached without a problem.
A typical current waveform is shown in figure 2 below.
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