I have a 5v usb fan and I want to reduce the speed. how would I do it?
the fans on my laptop cooler is too loud.
thanks
I have a 5v usb fan and I want to reduce the speed. how would I do it?
the fans on my laptop cooler is too loud.
thanks
Simplest thing to do might be to replace the 5V fan with a 12 volt fan that is the same size. The 12 volt fan will run slower from 5V. Just be sure it is not a brushless DC fan.
Simplest thing to do might be to replace the 5V fan with a 12 volt fan that is the same size. The 12 volt fan will run slower from 5V. Just be sure it is not a brushless DC fan.
That's plain wrong .
A 12v BLDC can work down to 1.5V .
PWM with a TL494 into a N-channel mid power mosfet will do .
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.