开云体育

On 8/22/2019 20:15, SP9DEV wrote:

Would adding a very small capacitor (nano/pico order) help as well? Or would this be too small to make any difference?

And another question, does anyone know any MacGyver way to make something working as a ferrite sleeve? I don't have any right now and would like to test it as soon as possible.

One more thing....
A ferrite sleeve is useful for common mode RFI a higher frequencies, but has little effect on lower frequencies, like audio.? It provides a series inductance in the supply line, so more that one turn of a supply cable through the sleeve (if will fit) will be more effective than just one pass through.

Woody