Posted by
BiBrun on
URL: https://www.es-forum.com/Fwd-filter-meter-testing-tp1553162p1553176.html
The test results are interesting, but it might make more sense
to use something that you'd expect to bother you (and ideally
get someone else to do it).
I would say that the Blue Circle seems to have the most capacitance of the
bunch, based on how the Entech readings drop.
Some digital multimeters (including one I have) can measure capacitance. Of
course the measurement on a filter is a bit suspect, since there are
(hopefully) inductors in there too... but I think it's still pretty close
and at least gives some idea of leakage current (the other way to check is
to plug it in and measure 60Hz current... if you have a clamp-on ammeter and
the capacitance is large enough this is easy... or measure the magnetic
field at a specific point close to the outlet might give a good relative
reading; it will also illustrate why Stetzer filters near your bed are a
bad idea).
Filter concepts sells some medical low-leakage filters that leak
only a few microamps (which means low capacitance). Unfortunately they
don't have plugs so you need to wire them into a box (and add a fuse).
On Sun, Apr 4, 2010 at 8:38 PM, Steve G <
[hidden email]> wrote:
>
>
> The Brick Wall is being used for her computer? I never even thought of
> that, usually they are used for audio/video. I am curious as to what the
> readout would be
>
>
> --- On Sun, 4/4/10, Marc Martin <
[hidden email] <marc%40ufoseries.com>>
> wrote:
>
> > From: Marc Martin <
[hidden email] <marc%40ufoseries.com>>
> > Subject: Re: [eSens] Fwd: filter / meter testing
> > To:
[hidden email] <eSens%40yahoogroups.com>
> > Date: Sunday, April 4, 2010, 7:24 PM
>
> > > Looks like the Furman got the
> > most balanced results with the PS Audio and
> > > Tripplite and Blue Circle performing well also.
> >
> > The Blue Circle gives me side effects like the Stetzer
> > filters do... I think
> > it works about the same way, except it probably has a
> > higher quality
> > capacitor.
> >
> > I was surprised about the PS Audio Noise Harvesters -- I
> > never thought these
> > actually did anything (I certainly never noticed them doing
> > anything), yet
> > they actually did quite a lot when the vacuum was turned
> > on.
> >
> > I should look around and see what else I can test, then do
> > this all over
> > again... I know I missed the Brick Wall filter, as my wife
> > was using her
> > computer at the time. :-)
> >
> > Marc
> >
> >
> > ------------------------------------
> >
> > Yahoo! Groups Links
> >
> >
> >
[hidden email]<eSens-fullfeatured%40yahoogroups.com>
> >
> >
> >
>
>
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