Load Google Translate Hi Dave,
You are right. I was thinking of a brushless DC motor that requires 3 phase AC drive (a controller module), not the cheap brushless fans that just provide electronic commutation.
Thanks guys.
but I solved this awhile ago, I reduces the speed by soldering 4 150ohm resistors together. Not sure how much that droped the voltage to.
They are 5v laptop cooler fans.
I tried puttibg some grease on the fans, and it didn't help with the noise, so I felt I needed to reduce the voltage.
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