I have a problem with PWM controller.
I use velleman K8004 PWM controller card to drive DC motor. I have a problem that when I choose low frequency (by rotating resistor) the motor vibrates, when I set high frequency (5000Hz) I hear high pitch whine noise.
Is it possible to make the noise inaudible?
Manual:
https://www.electro-tech-online.com/custompdfs/2009/07/illustrated_assembly_manual_k8004_rev3.pdf
I use velleman K8004 PWM controller card to drive DC motor. I have a problem that when I choose low frequency (by rotating resistor) the motor vibrates, when I set high frequency (5000Hz) I hear high pitch whine noise.
Is it possible to make the noise inaudible?
Manual:
https://www.electro-tech-online.com/custompdfs/2009/07/illustrated_assembly_manual_k8004_rev3.pdf