[sdiy] Powerline LC filters etc.

[Ian Fritz]

At 09:38 AM 2/29/2012, Harry Bissell wrote:

>Watch out for the trouble I pointed out earlier... separate ground 
>impedances mean different DC voltage drops, you may create ground loops by
>connecting various modules together.

I wasn't clear on this from the data sheet.  Are these actually wire-wound 
inductors or they ferrites.  Ferrites shouldn't have issues at dc, na?

Ian