>
>
> Interesting discussion.
> How do you detect a ground loop?
> Can neutral to ground connections be detected with the electrical
> receptacle testers?
>
> --- In [hidden email], Bill Bruno <wbruno@...> wrote:
> >
> > I thought that since 2000 or so linear power supplies
> > are basically illegal (due to their poor efficency) to
> > sell with electronics.
> >
> > You're right that the Stetzer gets rid of differential mode only.
> > Question is why does the common mode convert back to
> > differential mode further away? Most likely because of
> > differences in capacitance to ground on the hot versus neutral.
> >
> > This doesn't surprise me, but it's also possible you have direct
> > neutral to ground connections somewhere (other than the
> > panel I mean... I suppose the signals could be bouncing back
> > at the panel which might also explain it?) This might be
> > worth finding and fixing. Easy to test at the panel if you can
> > remove the ground or neutral bus bar without getting ill
> > from the meter. Maybe better if you can find a young cheap
> > electrician to do it. You can also have them check for
> > connections between neutral wires.
> >
> > Or just open up every switch box that might have two circuits
> > live in it and separate the grounds (and the neutrals if they
> > are tied). You'd be surprised how removing a ground loop
> > can reduce the fields throughout the house.
> >
> > BIll
> >
> > On Thu, Feb 10, 2011 at 8:16 AM, jaime_schunkewitz <
> > jaime_schunkewitz@...> wrote:
> >
> > >
> > >
> > > I finally have clean electricity again, after
> > > replacing the Motorola cable modem (Model SB5101U)
> > > that Comcast provides. I'm using a Linksys
> > > CM100-T1. The Motorola pegged my Entech powerline
> > > noise analyzer (180 @ half sensitivity), while the
> > > Linksys adds nothing to the reading. It even comes
> > > with an analog 9v AC/DC power inverter.
> > >
> > > Here's an anecdote about using shunt capacitors as
> > > filters. One capacitor brought the reading from 180
> > > to single digits when plugged in and measured at the
> > > same receptacle as the modem. However, at other
> > > receptacles in the house I still measured the same
> > > elevated readings. And the capacitor had no effect
> > > on reducing the levels of AM radio noise.
> > >
> > > These so called filters appear to short out the higher
> > > frequencies and quench differential noise at the
> > > receptacle, however seem to push the noise elsewhere.
> > > Just an observation.
> > >
> > > Eli
> > >
> > >
> > >
> >
> >
> > [Non-text portions of this message have been removed]
> >
>
>  
>