> torque
DC fans don't have the hum, get up to speed faster, etc. They can operate at a far greater range of speeds and still maintain high power output. AC fans operate in a much narrower envelope.
DC fans don't have the hum, get up to speed faster, etc. They can operate at a far greater range of speeds and still maintain high power output. AC fans operate in a much narrower envelope.
That's not something I've ever cared about.