Noise on the PWM signal. What value of capacitor should i add to decrease the noise?
I'm not an EE, but from my understanding, no. Twisted pair serves to render the pair &quot;invisible&quot; to electromagnetic interference since any voltage is introduced in both leads in exactly the same amount and phase, cancelling each other out.
An inductive choke, on the other hand, serves to filter AC signals at certain frequencies because those frequencies introduce alternating magnetic fields in the ferrite choke. The twisted pair would not induce a magnetic field in the choke, so you wouldn't filter the frequencies passing through the wire.
Now if you split the twisted pair and wound each leg around a separate choke, then continued with the twisted pair on the other side, you should be able to both get the noise resistance of twisted pair and the high frequency filtering of the choke. (You'd increase the noise in the wire by a small amount since part of the wire wouldn't be twisted pair. Again, I'm talking as a fairly well-informed amateur here, not an EE.)