dr pepper Well-Known Member Most Helpful Member Aug 15, 2014 #21 Yes a yellow stripe means iron powder, they are usually for filtering noise, and as mentioned have high losses for that purpose getting rif of noise. Try using a transformer instead of a torroid, or buy a new torroid made from N87 or N97.
Yes a yellow stripe means iron powder, they are usually for filtering noise, and as mentioned have high losses for that purpose getting rif of noise. Try using a transformer instead of a torroid, or buy a new torroid made from N87 or N97.