From an electronics designer. (that's me)

by R. Proffitt Moderator - 11/21/12 7:14 AM

In Reply to: Increasing use of ferrite cores? by Park_Bio

We only add them when we can't pass the FCC or other tests. Or when we think it's causing interference.

I can see why folk could get confused about these and wonder why some gear has it and others do not.
Bob