I'm currently doing a project at college and I am unsure of how to create a circuit that would allow for 3 different speeds in BLDC motor. To be more specific I am making a bladeless fan so the fan would be located in the base of the fan. So any help towards the circuit will be greatly appreciated.

Thank You

I didn't find the right solution from the internet.
References:
- https://www.electronicspoint.com/threads/circuit-for-a-desktop-fan.283506/
- Product demo video Examples

 

First use a pwm for controlling the speed of the fan. You can use a uC or a 555 timer, there is also modules that generate pwm.
Then you can drive a transistor to control the power to the fan.

 

Do you have a circuit that would allow for a single speed of a BLDC motor?