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 Post subject: is this non-sense?
PostPosted: Fri Jun 23, 2017 6:20 pm 
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Joined: Sat Jan 11, 2014 12:47 pm
Posts: 27
Location: Montreal, QC, CA
https://www.amazon.com/Graham-Stetzer-G ... op?ie=UTF8

anyone used this ? thoughts?

im thinking you could somehow see the same type of reading with an multimeter, this thing seem way too basic for the money... am just curious what you guys think of such a product.

thx


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 Post subject: Re: is this non-sense?
PostPosted: Fri Jun 23, 2017 6:38 pm 
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Location: Toronto, ON, CA
Probably could with a steep high pass filter ahead of it.

As to whether it's worth it or not I can't say. Most power supplies have 1st or 2nd order low pass ripple filters with a cutoff near DC. Might not be enough if the hydro is badly polluted, but you'd think it would be.

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 Post subject: Re: is this non-sense?
PostPosted: Fri Jun 23, 2017 7:26 pm 
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Location: saskatoon, SK, CA
so $95 american for what i'll say is a capacitive filter?!

that's a diy 0.01uF cap and a 1 meg resistor if memory serves me...


just googled a video....

https://www.youtube.com/watch?v=Hc8gC0DhqbQ


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 Post subject: Re: is this non-sense?
PostPosted: Fri Jun 23, 2017 8:01 pm 
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Location: Coquitlam, BC, CA
Well, it would be "nonsense" but I just wonder what you would do with that information. We used line recorders in our business that would record hours of line voltage so you'd have some sort of database to determine if it was screwing with the electronics, and lead to those "can't find anything wrong with it" situations. I guess it depends, maybe you could have a couple of beers and watch some peelers instead.


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 Post subject: Re: is this non-sense?
PostPosted: Fri Jun 23, 2017 8:03 pm 
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Location: Guelph, ON, CA
May as well add one of these to the cart while you're at it:

https://www.amazon.com/Protection-Energ ... f+detector


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 Post subject: Re: is this non-sense?
PostPosted: Fri Jun 23, 2017 8:21 pm 
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Oh crap...my bad.
It's just measuring not filtering?


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 Post subject: Re: is this non-sense?
PostPosted: Fri Jun 23, 2017 9:48 pm 
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Location: Montreal, QC, CA
well they say its to measure so that u then know if you need to filter accordingly...

but i dont understand what exactly does it measure ?


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 Post subject: Re: is this non-sense?
PostPosted: Fri Jun 23, 2017 10:04 pm 
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Location: Chilliwack, BC, CA
I highly recommend you buy it and let us know if it works


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 Post subject: Re: is this non-sense?
PostPosted: Sat Jun 24, 2017 5:08 am 
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In THEORY, the device can be useful for identifying plugs with excessive line noise, but it doesn't seem to identify exactly WHAT kind of noise and its frequency or how many kinds of noise; just the amount of total noise on the line. Different kinds of noise require different kinds of solutions/filtering to resolve.


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 Post subject: Re: is this non-sense?
PostPosted: Sat Jun 24, 2017 6:19 am 
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Location: Toronto, ON, CA
f18inch wrote:
well they say its to measure so that u then know if you need to filter accordingly...

but i dont understand what exactly does it measure ?
The specs are too vague to take the product seriously....I understand your skepticism. If you look at the Q & A that follows at the bottom you'll see that some people are comparing it to a competitor's product. Googling that, you'll find more answers.

I take back my suggestion of a steep high pass filter, and instead would swap in a high Q notch filter set to 60 Hz. The result would read any powerline noise that it NOT 60Hz....EMI, RFI and whatever else may be out there. Simple to DIY....a few caps and resistors and an IC opamp is all it takes; a breakout box, circuit board and power supply; not to mention the DMM and the time to put it all together, test and troubleshoot it. Easier to avoid all that effort and just buy it lol.

I still think too much is made of it, but you never know. A good way to sell wall filters to OCD types, that's for sure. :)

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 Post subject: Re: is this non-sense?
PostPosted: Sat Jun 24, 2017 6:40 am 
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Joined: Sun Mar 03, 2013 8:07 am
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Location: Mississauga, ON, CA
Save your hard earned cash and invest in a decent surge protection power bar that includes an equipment warranty against surge related equipement damage !

Better to spend it on the front end of things rather than on the back end , much too late by that time!


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 Post subject: Re: is this non-sense?
PostPosted: Sat Jun 24, 2017 7:50 am 
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Posts: 78
Location: Windsor, ON, CA
Original STETZERiZER Graham Stetzer Filters.
http://www.stetzerizer-us.com/stetzeriz ... icity.html

>> 20 filters is the average number of filters to clean up dirty power at an average home.
>> At 60 Hz the filters act as capacitors
...

These two points...
Pretty much tell me -- All that I need to know.
--
WAIT!!! There Is Now Even More! :lol:

Electro-magnetic hypersensitivity symptoms.
http://www.gsfilters.com/en/products.php#the-filter

It must be made clear that Filters do not profess to be a panacea for people who are affected or suffer from any of the health issues.

However, the research indicates that there has been substantial improvement in the quality of life of those people who are sensitive to excessive levels of electromagnetic radiation energy.

Symptoms of (radiation) radio wave sickness first documented among radar workers during the Second World War resemble those now associated with electromagnetic hypersensitivity and include:

Neurological
headaches, nausea, lack of concentration, irritability, fatigue, insomnia, muscle and joint pain, muscle spasms
Cardiac
palpitations, arrhythmia, low or high blood pressure, shortness of breath
Respiratory
sinusitis, bronchitis, pneumonia, asthma
Dermatological
skin rash, itching, burning, facial flushing
Ophthalmological
pain or burning in eyes, pressure in or behind eyes, deteriorating vision, floaters, cataracts
Others
digestive problems, dehydration, immune abnormalities, pain in teeth.


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 Post subject: Re: is this non-sense?
PostPosted: Sat Jun 24, 2017 8:55 am 
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Joined: Wed Jul 23, 2008 5:04 pm
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Location: saskatoon, SK, CA
^^^

The problem is the symptoms listed are so vast.
One could google something like hyperthyroidism and check off 90% of those.

My point is sometimes online diy doctoring might not be the route to travel.


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 Post subject: Re: is this non-sense?
PostPosted: Sat Jun 24, 2017 11:24 am 
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Posts: 751
Location: New Westminster, BC, CA
Another product that answers the question that nobody asked.


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 Post subject: Re: is this non-sense?
PostPosted: Sat Jun 24, 2017 3:39 pm 
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Joined: Thu Nov 25, 2004 4:52 pm
Posts: 1005
Location: Montreal, QC, CA
Just another in a long line of other(mostly irrelevant)things to obsess over.


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