On 6/26/2020 10:36 AM, wrote:
On Thursday, June 25, 2020 at 8:40:55 PM UTC-5, Hawk wrote:
On 6/25/2020 9:25 PM, wrote:
I am shopping for ceiling fans and I am see adds for fans that have DC motors that are rated and advertised for a lot more efficiency.

Just don't understand why a DC motor would be much more efficient that AC ?

Any help is appreciated.

Thank You.



DC motor is 30% more efficient due to the secondary magnetic field being
generated from the permanent magnets rather than copper windings.

Does that add alot of weigh to the fan motor ?


https://www.machinedesign.com/mechan...per%20windings.